The price is $14 for each novel and $25 for each Cookbooks when a bookstore made $167 on the sale of 3 new novels and 5 copies of a new cookbook.
Given that,
A bookstore made $167 on the sale of 3 new novels and 5 copies of a new cookbook. Three cookbook copies and one copy of the brand-new book were sold the next day, bringing in $89 for the company.
We have to find what the cost of each book was.
We know that,
A bookstore took in$ 167 on the sale of 5 copies of a new cookbook and 3 copies of a new novel.
The next day it took in $ 89 on the sale of 3 copies of the cookbook and 1 copy of the novel.
What is System of equation?An algebraic expression-based system of equations is a collection of relationships between several unknown variables.
Now,
Let x= cookbook and y= novel.
So,
On first day, 5x + 3y = 167----->equation(1)
On second day, 3x + 1y = 89----->equation(2)
These equations must be solved in order to determine the cost of each book.
From equation(2), we get;
y = 89 - 3x
Now we use this x solution to solve our first equation.
We get;
5x + 3(89-3x) = 167
5x + 267 - 9x = 167
267-167 = 9x - 5x
100 = 4x
x = 25
So, The price is $25 for the each Cookbooks.
Now, By substituting $25 for x in the second equation, we must get the value of y.
y=89-3(25)
y=89-75
y=14
So, The price is $14 dollars for each novel.
So,
Therefore, The price is $14 for each novel and $25 for each Cookbooks when a bookstore made $167 on the sale of 3 new novels and 5 copies of a new cookbook.
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As part of an ongoing service project, the students at Allenville High School recently spent an afternoon planting trees. They planted an average of 8 trees per participant. Soon they plan to do some more planting, averaging 12 trees per participant. If everything goes as planned, what will be the percent of increase in the average number of trees planted?
Answer:
50% increase
Step-by-step explanation:
If we call the number of people x;
On the first afternoon, everyone plants 8x (Average 8 per person)
In the future, the plan to plant 12x trees (Average 12 per person)
From 12x to 8x is a 50% increase, (12/8 = 1.5)
Hope this helps,
:]
Michelle invests in a savings account that pays 5% interest compounded monthly. What is the APY for this account ?? (Round to the nearest 0.00%)
Only answer if you know!!
The account's APY is 5.12%.
Waht is APY.Annual Percentage Yield, or APY, is the rate that may be earned on an account over the course of a year and includes compound interest.
The annual percent yield, or APY, accounts for interest compounding. Because it takes into account the interest you earn on your money, it accurately reflects the interest rate you really receive on an investment.
Consider the previous illustration, where a $100 investment generates a 5% quarterly compounded return. On the $100, you receive interest throughout the first quarter. However, in the second quarter, you also receive interest on the $100 in addition to the first quarter's interest.
The APY (Annualized Percentage Yield) formula is:
APY = [tex](1+i/N)^{N} -1[/tex]
where, i = Nominal rate = 5%, N = Number of compounding periods = 12
putting the values in the above formula, we get,
APY = (1 + 5% / 12)^12 - 1
APY = (1 + 0.4167%)^12 - 1
APY = (1 + 0.0041667)^12 - 1
APY = (1.0041667)^12 - 1
APY = 1.051161897 - 1
APY = 0.051161 or 5.12%
The APY for this account 5.12%
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Use compatible numbers to estimate the correct quotient.
Answer:
60
Step-by-step explanation:
900 divided by 15 is 60
You are presented with a deck of 20 cards, numbered from 1 to 20 and can draw one card. If the number is odd, you win $22. If the number is even, you win nothing. If you play the game, what is the expected payoff?
Answer:
$220
Step-by-step explanation:
Because, from 1 to 20 there are 10 odd numbers (1, 3, 5, 7, 9, 11, 13, 15, 17, 19) so it is said that for one odd number you win $22, as for 10 odd numbers, that is $22 x 10 which is $220
Line q passes through the points (3,5) and (-2,4)
10) The second pair of coordinate on the line parallel to q and passes through the point (1, 0) is (-5, 0).
11) The second pair of coordinate on the line perpendicular to q and passes through the point (3, 5) is (2, 0).
What is a slope?When the ratio is expressed as a quotient ("rise over run"), the same number is provided for every two distinct locations on the same line. There is a negative "rise" on a descending line.
Given,
Line q passes through (3, 5), (-2, 4)
(y-y₁)=m(x-x₁)
(y-5)=((4-5)/(-2-3))(x-3)
(y-5)=(-1/-5)(x-3)
-5y+25=-x+3
x-5y+22=0
10) Given point is (0,1)
Slopes are equal for parallel lines.
So, (y-1)/(x-0)=(-1/-5)
-5y+5= -x
x-5y+5=0Let y=0 then,
x= -5
Therefore, the second pair of coordinate on the line parallel to q and passes through the point (1, 0) is (-5, 0).
11) The equation of a line perpendicular to q is,
(y-y₁)=(-1/m)(x-x₁)
(y-5)=5(x-3)
y-5=5x-15
5x-y-10=0
Let y=0 then,
5x-10=0
x=2
Therefore, the second pair of coordinate on the line perpendicular to q and passes through the point (3, 5) is (2, 0).
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A chool taff meeting had 60 teacher in attendance, 30% of whom were firt-year teacher. How many firt-year teacher were in the meeting?
18 first-year teachers were in the meeting.
In this question, we have been given that a school staff meeting had 60 teachers in attendance, 30% of whom were the first-year teachers.
We need to find the number of first-year teachers present in the meeting.
Let x be the number of first-year teachers present in the meeting.
As 30 percent of school staff are the first-year teachers, we need to find the 30 percent of 60.
Using the formula of percentage,
x = 60 * (30/100)
x = 18
Therefore, the number of first-year teachers present in the meeting = 18
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oger federer's run of 5 consecutive wimbledon championships, a record tied with bjorn borg, was halted when he was defeated in the final in 2008 by whom?
Roger Federer's record-tying run of five consecutive Wimbledon Championships was ended in 2008 when he was defeated in the final by Rafael Nadal.
Swiss tennis player Roger Federer, born in Basel, Switzerland, on August 8, 1981, dominated the sport in the early 21st century with his superb all-around performance.
At Wimbledon 2008, Federer made an effort to beat Borg's mark and become the first male player to win six straight Wimbledon championships in the Open Era.
Federer's 41-match winning streak was snapped at Wimbledon when Nadal upset him in his most successful major.
Roger federer's run of 5 consecutive wimbledon championships, a record tied with bjorn borg, was halted when he was defeated in the final in 2008 by Rafael Nadal
The following year, Federer repeated the feat, and in 2010, Nadal once again won the double.
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Look at the equation. 5|x+3|-10=0 Select all the solutions to the equation.
22. Sven has 11 more than twice as many customers as when he
started selling newspapers. He now has 73 customers. How many
did he have when he started
Please Help with 4 and 6
The second-period interest and amount after two months, if The principal amount is $400, The rate of interest is 6% per annum, are $4.02 and $406.02 respectively.
What is interest?When the loan is given to you, then some amount is charged to you for the principal amount and that is called interest.
Given:
The principal amount, P = 400,
The rate of interest, r = 6% per annum,
The time period, t = monthly = 1 / 12 year,
Calculate the simple interest for the first month as shown below,
Simple interest = [tex]p\times r\times t/100[/tex]
Simple interest = 400 × 6 × 1 / (12 × 100)
Simple interest = 2
Thus, the amount of the first month is the principle for the second month,
Amount of the first month = Principal of the second month = 400 + 2 = 402,
Calculate the simple interest for the second month as shown below,
Simple interest = [tex]p\times r\times t/100[/tex]
Simple interest = 402 × 6 × 2 / (12 × 100)
Simple interest = 4.02
Amount after two months = 402 + 4.02 = 406.02.
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What value for a in the system of equations below would yield no solutions for the system? Explain how you obtained your answer.
ax+12y=−6
2x−6y=4
a=
The value of 'a' in the system of equations will be;
⇒ a = - 4
What is an expression?
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The system of equation are;
⇒ ax + 12y = - 6
⇒ 2x - 6y = 4
Now,
By the condition of No solution for the system, we get;
⇒ a / 2 = 12 / - 6
⇒ a / 2 = - 2
⇒ a = - 4
Thus, The value of 'a' in the system of equations will be;
⇒ a = - 4
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.Solve for x
x = 192
x = 336
x = 8√3
x = 4√21
We can solve this question by using Pythagoras Theorem . The value of x in the given question is 8√3.
What do you mean by Pythagoras Theorem?
The well-known Pythagorean Theorem, which states that the square of the hypotenuse is equal to the sum of squares of the lengths of the other two sides of the right-angled triangle, states that the square on the hypotenuse (the side opposite the right angle) is equal to the square on the legs of a right triangle. Pythagorean Theorem is written as a2 + b2 = c2. Alternatively, the square of the hypotenuse of a right triangle is equal to the sum of the squares of its two legs.
CalculationFrom the given triangle using Pythagoras theorem,
Assume the triangle as ABC where AB=y BC=z and AC=28
D is the altitude from B and BD=x
AD=12 so CD=16
Now using Pythagoras theorem,
(y)2 = (12)2 + (x)2 - eq1
(z)2 = (x)2 + (16)2 -eq2
(y)2 + (z)2 =(28)2 -eq3
Substitute eq 1 and 2 in 3
⇒2(x)2 + (12)2 + (16)2 =(28)2
⇒(x)2 =192
∴x =8√3
We can solve this question by using Pythagoras Theorem . The value of x in the given question is 8√3.
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PLS HELP ME!!!! I RLLY CONFUSED!!! 100 PTS. NO SCAM ANSWERS T-T
Answer:
1. 2(x-2) = 2x -4 = -7 + 6x -4x +3
2. (x+14) - (8-2x) = 3x + 6 = 9x - 2(3x-3)
3. 3(x+5) = 3x + 15 = -2x + 9 + 5x + 6
4. -4(x+1) + 5x = x - 4 = (7-2x) + (3x -11)
5. (7 + 5x) + (-4x - 1) = 6 + x = -3x + 6 + 4x
Step by step:
For number 1:
2(x-2) = 2x - 4
-7 + 6x -4x + 3 = (-7 + 3) + (6x - 4x) = 2x - 4
For number 2:
(x+14) - (8-2x) = x + 14 - 8 + 2x = (14-8) + (2x + x) = 3x + 6
9x - 2(3x-3) = 9x - (6x - 6) = 9x - 6x +6 = 3x + 6
--
Have a nice day!!
Answer:
4
1
2
5
3
Step-by-step explanation:
we should simplify them first
we will keep the first column the same and call them by numbers 1-5 and the second column will be labled by letters A-E
1- 2(X-2)
2X-4
2- X+14-(8-2X)
X+14-8+2X
3X+6
3 - 3(x+5)
3x+15
4: -4(x+1)+5x
-4x-4+5x
x-4
5. (7+5x)+(-4x-1)
x+6
A: 7-2x+3x-11
x-4
A=4
B: -7+6x-4x+3
-7+2x+3
2x-4
B=1
C: 9x-6x+6
3x+6
c= 2
D: -3x+6+4x
x+6
D= 5
E-2x+9+5x+6
3x+15
E= 3
hopes this helps and im sorry for the mess i had to write a lot please mark brainliest
A certain statistic dˆ is being used to estimate a population parameter d. The expected value of dˆ is not equal to d. What property does dˆ exhibit?.
According to the Central Limit Theorem for proportions, the property does dˆ exhibit is the statistic is biased.
Central line theorem:
In statistics, central limit theorem states that when the large sample size has a finite variance, the samples will be normally distributed and the mean of samples will be approximately equal to the mean of the whole population.
Given,
A certain statistic dˆ is being used to estimate a population parameter d. The expected value of dˆ is not equal to d.
Here we need to find the property does dˆ exhibit.
As per the Central Limit Theorem establishes that for a proportion p in a sample of size n:
Expected value μ = p
Standard error s = √p(1 - p) /n
Here the expected value is different of the expected, hence, the statistic is biased.
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rubys market sells smoked meats by the pound. The prices for several different meats ate shown in the table.?
giving 85 points)
The amount of money that Kaylee will have left after spending to by meat in Ruby's market would be = $5.01.
What is Kaylee's balance after market purchases?The total amount of money Kaylee has to spent in the market = $11
The quantity of sausage she ordered = 1/2pound
The price of per pound of sausage = $3.25
Therefore 1/2 pound = 3.25 × 1/2 = $1.63
The quantity of chicken she ordered = 1¾ pounds
The price per pound of chicken = $2.50
Therefore 1¾ pounds = 2.50 × 1¾ = $4.36
The total money spent on meat = 1.63 + 4.36 = $5.99
The amount that Kaylee would have left = 11-5.99=$5.01.
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Digital citizens are those who use the internet regularly and effectively. What are three (3) good qualities of a responsible digital citizen?
Answer:
eat dog haha ok thats my answer
The ratio of the numbers of bananas to the number of oranges is 2:3 furthermore there are 24 more oranges to bananas. Calculate the number of bananas Ms Rehka bought.
The ratio of the numbers of bananas to the number of oranges is 2:3, thus Ms Rehka bought 48 bananas.
What is a ratio?A ratio is a fraction which shows the way of dividing two quantities.
How to calculate the number of bananas Ms Rehka bought?Since the ratio of the numbers of bananas to the number of oranges is 2:3 furthermore there are 24 more oranges to bananas.
Let
x = number of bananas and y = number of ornagesSince the ratio of the numbers of bananas to the number of oranges is 2:3, we have that
x:y = 2:3
x/y = 2/3
Also, there are 24 more oranges to bananas. We have that
y = x +24
Substituting y into the ratio, we have
x/y = 2/3
x/(x + 24) = 2/3
Cross-multiplying, we have
3x = 2(x + 24)
Expanding the brackets, we have
3x = 2x + 48
3x - 2x = 48
x = 48
So, Ms Rehka bought 48 bananas.
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solve the system of equations using the substitution method. state the solution as an ordered pair, (x,y). x+y=2 y=5x-4
Answer:
(1, 1)
Step-by-step explanation:
x+y=2
y=5x-4
x + 5x - 4 = 2
6x - 4 = 2
6x = 6
x = 1
x + y = 2
1 + y = 2
y = 1
(1, 1)
Why does 0.5x0.11 is equal to 0.055
0.5 x 0.11 is equal to 0.055 because of the zeros and the decimal placements.
Step-by-step explanation:How does it work?Even though it would seem like the answer would be 0.55, the decimal placement of 0.5 makes it so that the number would change to an extra zero in the final result.
I hope my answer helped you! If you need more information or help, comment down below and I will be sure to respond if I am online. Have a wonderful rest of your day!
Determine which integers in the set S:{−4, 4, 6, 21} make the inequality 3(j − 5) > 3(7 − 2j) true.
S:{6, 21}
S:{4, 21}
S:{−4, 6}
S:{−4, 4}
PLS HURRY
Answer:
b
Step-by-step explanation:
The integers 6,21 from the set will make the inequality 3(j-5)>3(7-2j) true.
What is inequality?Inequality is the unequal distribution of resources, opportunities, or rewards among individuals or groups in society. It can occur in many forms, such as unequal access to healthcare, education, employment, or other resources, or unequal treatment based on race, gender, ethnicity, and other factors. Inequality can also manifest as unequal income and wealth distribution, as well as unequal access to political power and decision-making. Inequality can be caused by a variety of factors, including structural factors and personal or individual-level factors, such as discrimination. Inequality can have a negative effect on both individuals and societies, leading to social and economic inequities that can be difficult to overcome.
The given inequality is 3(j-5)>3(7-2j). The given set is S:{−4, 4, 6, 21}.
First, we will simplify the given inequality.
3(j-5)>3(7-2j)
⇒j-5>7-2j
⇒3j>12
⇒j>4
It means that numbers greater than 4 will satisfy the given inequality.
Numbers greater than 4 in the given set are 6,21.
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There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun one time, what is the probability that the result is a multiple of 3 or a multiple of 5?
The likelihood that the number is 3 or 5 is 0.47.
What is probability?A probability is a numerical representation of the possibility or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.
There are 15 identical spaces. Once the spinner has been spun,
Probability is determined by dividing the number of potential outcomes by the number of possible positive outcomes.
5 times: 5, 10, and 15
3 times, 6, 9, 12, and 15.
Different results (3, 5, 6, 9, 10, 12, and 15) (stop doing them).
a variety of successful results 7
3) There are 15 possible outcomes.
4) Probability is equal to 7/15, or 0.47
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What is the equation of the line that passes through the point (2, 6) and has a slope
of-1/2
The equation of the line is y = -1/2x + 7 which passes through the point (2, 6) and has a slope of -1/2.
What is the equation of a line?
The general equation of a straight line is y = mx + c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis. Key Point. The equation of a straight line with gradient m and intercept c on the y-axis is y = mx + c.
The equation of a line that passes through the point (2, 6) and has a slope of -1/2 can be written in the form y = mx + b, where m is the slope of the line and b is the y-intercept, which is the point where the line crosses the y-axis.
To find the equation of the line, we can use the point-slope form of a line, which is given by the equation y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope of the line.
Substituting the values for the point and the slope into this equation, we get:
y - 6 = (-1/2)(x - 2)
y - 6 = -1/2x + 1
y = -1/2x + 7
Hence, The equation of the line is y = -1/2x + 7 which passes through the point (2, 6) and has a slope of -1/2.
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HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
Answer:
x = 5
Step-by-step explanation:
Find the scale factor from figure B to A
let x = the scale factor
5x = 2 Divide both sides by 5
x = [tex]\frac{2}{5}[/tex] or .4
12.5 x .4 = 5
Jill made a New Year's resolution to learn how to play the cello. She bought an Introduction to
Cello class pack from the Purple Harp music shop, which covers the cost of 15 cello lessons.
She also paid $35 to rent a cello. In all, Jill paid $425.
Which equation can you use to find the cost, c, of each cello lesson?
A. 35(c +15) = 425
B. 15c + 35 = 425
C. 15(c + 35) = 425
D. 35c+15= 425
Answer: The correct equation to find the cost, c, of each cello lesson is: 15c + 35 = 425
Step-by-step explanation:
This equation represents the total cost of the cello lessons and the cello rental, which is 425 dollars. The cost of the cello lessons is represented by 15c, and the cost of the cello rental is represented by 35 dollars. By solving this equation for the variable c, we can find the cost of each cello lesson.
To solve this equation, we can use the following steps:
Subtract 35 from both sides of the equation: 15c = 425 - 35
Simplify the right side of the equation: 15c = 390
Divide both sides of the equation by 15: c = 390/15
Simplify the right side of the equation: c = 26
Therefore, the cost of each cello lesson is $26.
You buy an I-phone for $800 or pay $75 down and the balance in 12 monthly payments of $65. What is the installment price?
The installment price is $55.
How to find the price?This can be illustrated through an expression. Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.
An expression, often known as a mathematical expression, is a finite collection of symbols that are well-formed in accordance with context-dependent principles. Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.
Here, you buy an I-phone for $800 or pay $75 down and the balance in 12 monthly payments of $65. The total amount will be:
= 75 + (12 × 65)
= $855
The installment will be:
= $855 - $800
= $55
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Round off to 3 decimal places.
55.7796 =
Given : 55.7796
To Find : rounded off to 3 decimal places
Solution:
55.7796
To round off to 3 decimal places need to check digit at
4th decimal place
if digit is 5 or greater than 5 then digit at 3rd decimal place has to be increased by 1 and all decimal places after that to be removed
if digit is less than 5 then digit at 3rd decimal place remains same and all decimal places after that to be removed
55.7796
Digit at 4th decimal place is 6 which is greater than 5
Hence digit at 3rd decimal place has to be increased by 1
9 + 1 = 10 Hence 1 to be carried forward to digit at 2nd decimal place
7 + 1 = 8
Hence number rounded off to 3 decimal places is
55.780
55.7796 rounded off to 3 decimal places is 55.780
Complete the given diagram by dragging expressions to each leg of the triangle. Then, correctly complete the equation Not all expressions will be used. Then correctly complete the equation to derive the distance, d.
What we have here in the picture is a graph of a segment. The goal is to find the segment's length, which we can do by using the distance formula:[tex]d^2=\left(x_2-x_1\right)^2-\left(y_2-y_1\right)^2[/tex].
What is graph?
A graph is a structure that resembles a set of items in discrete mathematics, more especially in graph theory, in which certain pairs of the objects are conceptually "connected." The items are represented by mathematical abstractions known as vertices, and each pair of connected vertices is referred to as an edge.
Note that the distance between two points is equal to the length of the line segment that joins them.
So now we already have answers for two of the boxes.
The difference in the x-coordinates gives us the horizontal distance between the two points, while the difference in the y-coordinates gives us the vertical distance between the points.
So, the other two boxes should contain:
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Get the answer by completing the square
t^2-10t+6=7
Answer:
[tex]t=5 +\sqrt{26}, \quad t=5-\sqrt{26}[/tex]
Step-by-step explanation:
Given equation:
[tex]t^2-10t+6=7[/tex]
When completing the square for a quadratic equation, the first step is to move the constant to the right side of the equation:
[tex]\implies t^2-10t+6-6=7-6[/tex]
[tex]\implies t^2-10t=1[/tex]
Add the square of half the coefficient of the term in x to both sides to form a perfect square trinomial on the left side:
[tex]\implies t^2-10t+\left(\dfrac{-10}{2}\right)^2=1+\left(\dfrac{-10}{2}\right)^2[/tex]
Simplify:
[tex]\implies t^2-10t+\left(-5\right)^2=1+\left(-5\right)^2[/tex]
[tex]\implies t^2-10t+25=1+25[/tex]
[tex]\implies t^2-10t+25=26[/tex]
Factor the perfect square trinomial on the left side:
[tex]\implies (t-5)^2=26[/tex]
Square root both sides:
[tex]\implies \sqrt{(t-5)^2}=\sqrt{26}[/tex]
[tex]\implies t-5=\pm \sqrt{26}[/tex]
Add 5 to both sides:
[tex]\implies t-5+5=\pm \sqrt{26}+5[/tex]
[tex]\implies t=5 \pm \sqrt{26}[/tex]
Therefore, the solutions of the given quadratic equation are:
[tex]t=5 +\sqrt{26}, \quad t=5-\sqrt{26}[/tex]
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1
A circle of radius 3 cm is drawn inscribed in a right angle triangle ABC, right angled at C. If AC is
10 Find the value of CB
A. 10.5cm
B. (20/7)√58 cm
C. 21/2 cm
D. None of these
Answer:
Option A
Step-by-step explanation:
(x + 7)2 = 102 + (x + 3)2
(Tangents from the external point are equal)
⇒ x = 7.5cm ⇒ OB = x + 3 = 10.5 cm
Steven’ new cell phone plan charge a flat monthly fee of $24. The plan allow an unlimited number of text meage, but each minute (m) ued for phone call cot $0. 15. Which equation mot accurately repreent the monthly cot (c) of Steven’ phone bill baed on how many minute talked?
As a new cell phone plan charges a flat monthly fee of $24 and allows for an unlimited number of text messages, but charges $0.15 per minute (m) used for phone calls, the equation that will represent the problem is C=24+0.15m.
What is equation?The definition of an equation in algebra is a mathematical statement that demonstrates the equality of two mathematical expressions. For instance, the equation 3x + 5 = 14 consists of the two equations 3x + 5 and 14, which are separated by the 'equal' sign.
Here,
Let m be the minutes talked on phone,
C=24+0.15m
The problem is represented by the equation C=24+0.15m since the new cell phone plan charges a fixed monthly fee of $24 and permits unlimited text messages, but each minute (m) utilized for phone calls costs $0. 15.
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