Answer:
I don't know maybe ask the person that gave you this problem
Step-by-step explanation:
Answer:
5
Step-by-step explanation:
use the substitution method to solve the system of equations. choose the correct ordered pair
x+3y=9
y=x-5
Answer:
A. (6, 1)Step-by-step explanation:
Given
x+3y=9 y=x-5Substituting y:
x + 3(x - 5) = 9x + 3x - 15 = 94x = 9 + 154x = 24x = 6Finding y:
y = 6 - 5 = 1Answer: (6, 1)
Correct choice is A.
Answer:
A
Step-by-step explanation:
Example
A bowl contains 10 blue and 7 red marbles. Four (4) marbles are drawn at random from the
bowl. Calculate the probability of two blue marbles drawn when sampling is done with replacement
Step-by-step explanation:
Answer. The probability of picking a blue marble from the blue urn is 2/6=1/3. The probability of picking a blue marble from the black urn is 11/15. The two events are independent so the probability of a blue marble from each urn is the product of the two separate probabilities=1/3×11/15=11/45.
PLEASE NEED HELP ASAP IM GIVING ALL MY POINTS THIS SHOULD BE A EASY QUESTION.
Answer:
Function 1 is not a function.The domain and range of the first function respectively are [tex]\text{ \{-3, 0, 1, 5\}}[/tex] and [tex]\text{ \{-4, -2, -1, 1, 3\}}[/tex].Function 2 is a function.The domain and range of the second function respectively are [tex]\text{ \{-2, -1, 0, 1, 2\}}[/tex] and [tex]\text{ \{-7, -2, 1\}}[/tex].Step-by-step explanation:
In math, every function has a domain and a range.
The domain of the function is all of the x-values for which the function is true. These can be found on the x-axis for every position at which the function exists or crosses the x-axis.The range of the function is all of the y-values for which the function is defined. The range can be found in the same manner as the domain - for every y-value at which the function exists, it is apart of the range.Therefore, with this information given to us, we need to also know about coordinate pairs. Coordinate pairs are written in (x, y) form.
Functions are classified in four ways:
One-to-one functions: Functions are considered to be one-to-one functions if there are unique y-values (no y-values are repeated) and there is one x-value for every one y-value.Onto functions: Functions are considered to be onto functions if there are unique x-values. These x-values cannot repeat, but different x-values can be connected to the same y-values.Both one-to-one & onto: Functions are considered both one-to-one and onto when there is exactly one x-value for every one y-value.Neither one-to-one or onto: Functions are considered to be neither an one-to-one function or an onto function when they have two or more of the same y-values assigned to the same x-values. A function cannot exist if y-values are duplicated on a x-value.Finally, the domain and range should be written in ascending order. Therefore, the lowest number should be written first in the domain and the highest number should be written last.
Function 1
We are given the function: [tex]\text{ \{(-3, 3)}, (1, 1), (0, -2), (1, -4), (5, -1) \} }[/tex].
Using the information above, we can pick out our x and y-values from the function.
Values of Domain: -3, 1, 0, 1, 5
Values of Range: 3, 1, -2, -4, -1
Now, we need to arrange these in ascending order.
Domain Rearranged: -3, 0, 1, 1, 5
Range Rearranged: -4, -2, -1, 1, 3
Using these values, we can see what values we have.
For x-values:
x = -3: 1 value
x = 0: 1 value
x = 1: 2 values
x = 5: 1 value
For y-values:
y = -4: 1 value
y = -2: 1 value
y = -1: 1 value
y = 1: 1 value
y = 3: 1 value
Therefore, we can begin classifying this function. Because we have all separate y-values, we have a function. However, we have two of the same x-value, so we have an onto function.
Now, we can create our domain and range in the set. We use the same formatting given for the first function. We list the values in ascending order and list them in brackets to show that they are apart of a set.
The domain values are the x-values, so they are [tex]\text{ \{-3, 0, 1, 5\}}[/tex].
The range values are the y-values, so they are [tex]\text{ \{-4, -2, -1, 1, 3\}}[/tex].
Therefore, the domain and range for function one are defined, but this is not a function. Because the x-values repeat, it cannot be a function.
Function 2
We are given a table of values that needs to be translated into the set notation. This makes it easier to identify the values. We are given x-coordinates in the top row and y-coordinates in the bottom row. And, the table is set up to where the x-value directly above the y-value makes a coordinate pair. Using this, we can create the set function.
The set function is [tex]\text{ \{(-2, -7), (-1, -2), (0, 1), (1, -2), (2, -7)\}}[/tex].
Now, we can use the same method as above to pick out the x and y-values and reorder them to be from least to greatest.
Values of Domain: -2, -1, 0, 1, 2
Values of Range: -7, -2, 1, -2, -7
Now, we rearrange these.
Domain Rearranged: -2, -1, 0, 1, 2
Range Rearranged: -7, -7, -2, -2, 1
Now, we can check how many times the function presents each coordinate.
For x-values:
x = -2: 1 value
x = -1: 1 value
x = 0: 1 value
x = 1: 1 value
x = 2: 1 value
For y-values:
y = -7: 2 values
y = -2: 2 values
y = 1: 1 value
Now, we can classify the function. The x-values are unique, but the y-values are repeated. Therefore, because the x-values are assigned to one y-coordinate and they are unique, this is not an one-to-one function. Additionally, it cannot be an onto function because the y-values are not unique - they are repeated. Therefore, it is neither an one-to-one function or an onto function. If this function were graphed, it would actually reveal a parabola. However, it is still a function.
The domain values are the x-values, so they are [tex]\text{ \{-2, -1, 0, 1, 2\}}[/tex].
The range values are the x-values, so they are [tex]\text{ \{-7, -2, 1\}}[/tex].
Free 25 points TwT..
But Firsttt.. you have the question below but wrong answers only! ^^
Who are the first people on earth?? •w•
Answer: hmmmmmmmm sol and hmmmmmmm lemme think and charger?
Step-by-step explanation:
nba young boy Step-by-step explanation:
What is the distance between points 5,5 and 1,5 on the coordinate plane?
5,5 1,5
4,0cqscsqcewc
HELP PLAEASEEEEEEEEEEEEE
Answer:
y=3x+2
Step-by-step explanation:
Connor works in a department store selling clothing. He makes a guaranteed salary of $300 per week, but is paid a commision on top of his base salary equal to 5% of his total sales for the week. How much would Connor make in a week in which he made $2175 in sales? How much would Connor make in a week if he made xx dollars in sales?
Answer:
If Connor makes x dollars in sales, he will make 0.05x + 300 that week.
He makes $408.75 in a week if he makes $2175 in sales.
Step-by-step explanation:
y = 0.05x + 300
y = 0.05(2175) + 300
y = 408.75
solve: (-3/11) + (8/11)
Answer:
5/11
Step-by-step explanation:
-3/11 + 8/11= 5/11
This stuff I don’t understand .PLZZZZZZZ HELPPP MEEE
Answer:
1. 15
2. 6 × 7 × 4 or 6 × 4 × 7 or 7 × 4 × 6 or 7 × 6 × 4
3. (9 + 5) + 3
4. 11
5. 1
6. 0
Step-by-step explanation:
1. Additive Identity means that if you add 0 with any number, the result would always be the number itself.
2. Commutative Property of Multiplication means that no matter what order, the result would still be the same when the arithmetic operations are all ×.
3. Associative Property of Addition means that no matter where the bracket is placed or which numbers are associated with each other using a bracket, the result would still be the same.
4. Multiplicative Identity means that if you times 1 with any number, the result would always be the number itself.
5. Multiplicative Inverse means that when the denominator of the first fraction is the same as the numerator of the second fraction and the numerator of the first fraction is the same as the denominator of the second fraction, the result would always be 1.
6. If you add the positive of a number with a negative of a number, the result would always be 0.
The school math coach takes an inventory of math materials. He counts the materials for 5 different classes. Each class has 7 boxes of 10 pattern blocks, 6 boxes of 9 rulers, and 3 boxes of 2 calculators. Which expression shows the number of math materials?
Answer:
T = 5 * ((7 * 10) + (6 * 9) + (3 * 2))
Step-by-step explanation:
The following mathematical expression would calculate the total number of materials in all of the classes which would be represented by the variable T. We would first multiply the quantity of a specific material in a single box by the number of boxes that exist for each separate material and then multiply that number by 5 since there are a total of 5 classrooms and all have the same quantity of the same materials.
T = 5 * ((7 * 10) + (6 * 9) + (3 * 2))
If we were to solve this we would see that there are a total of
T = 5 * ((7 * 10) + (6 * 9) + (3 * 2))
T = 5 * (70 + 54 + 6)
T = 5 * 130
T = 650
650 materials
Suzanne will use orange and blue beads to make bracelets. She will use the same number of orange beads on each bracelet and the same number of blue beads on each bracelet. She has 72 orange beads and 78 blue beads. What is the greatest number of bracelets that she can make that will have the greatest number of orange beads and blue beads? Explain how you know.
Answer:
She can make 6 bracelets using 12 orange beads and 13 blue beads.
Which algebraic expression represents the statement below?
five less than the product of six and a number
Group of answer choices
1. 6 - ( 5 x f )
2. ( 6 x f ) - 5
3. ( 5 x f ) - 6
4. 5 - ( 6 x f ) pick one
Which of the following expression is equivalent to 6x2−13x−28
I. 6x2+8x−21x−28
II. 2x(3x+4)+7x(3x−4)
III. 2x(3x+4)−7(3x+4)
IV. (3x+4)(2x−7)
IV only
IV only
I, III, and IV
I, III, and IV
I, II, and IV
I, II, and IV
I and IV only
I and IV only
Answer:
I, III and IV
Step-by-step explanation:
Required
Determine equivalent expressions to [tex]6x^2 - 13x - 28[/tex]
To do this, we simplify each of the given options.
[tex]I.\ 6x2+8x-21x-28[/tex]
Simplify like terms
[tex]6x2+8x-21x-28[/tex]
[tex]= 6x2-13x-28[/tex]
This is equivalent to the given expression
[tex]II.\ 2x(3x + 4) + 7x(3x - 4)[/tex]
Open Bracket
[tex]2x(3x + 4) + 7x(3x - 4)[/tex]
[tex]2x*3x + 2x*4 + 7x*3x - 7x*4[/tex]
[tex]6x^2 + 8x - 21x^2 - 28x[/tex]
Collect Like Terms
[tex]6x^2 - 21x^2 + 8x - 28x[/tex]
[tex]-15x^2 - 20x[/tex]
This is not equivalent to the given expression
[tex]III.\ 2x(3x+4)-7(3x+4)[/tex]
Open Bracket
[tex]2x(3x+4)-7(3x+4)[/tex]
[tex]2x*3x + 2x*4 - 7*3x - 7*4[/tex]
[tex]6x^2 + 8x - 21x - 28[/tex]
Simplify Like Terms
[tex]6x^2 -13x - 28[/tex]
This is equivalent to the given expression
[tex]IV.\ (3x + 4)(2x-7)[/tex]
Open Brackets
[tex]3x * 2x - 3x * 7 + 4*2x-4*7[/tex]
[tex]6x^2 - 21x+ 8x-21[/tex]
Simplify like terms
[tex]6x^2 -13x-21[/tex]
This is equivalent to the given expression
Hence: I, III and IV are equivalent to the given expression
I will give u brainselst if u solve question below plz show work....
Answer:
26 inches
Step-by-step explanation:
how to solve math percentage problems
Answer:
Calculator Use
Find a percentage or work out the percentage given numbers and percent values. Use percent formulas to figure out percentages and unknowns in equations. Add or subtract a percentage from a number or solve the equations.
How to Calculate Percentages
There are many formulas for percentage problems. You can think of the most basic as X/Y = P x 100. The formulas below are all mathematical variations of this formula.
Let's explore the three basic percentage problems. X and Y are numbers and P is the percentage:
Find P percent of X
Find what percent of X is Y
Find X if P percent of it is Y
Read on to learn more about how to figure percentages.
1. How to calculate percentage of a number. Use the percentage formula: P% * X = Y
Example: What is 10% of 150?
Convert the problem to an equation using the percentage formula: P% * X = Y
P is 10%, X is 150, so the equation is 10% * 150 = Y
Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10
Substitute 0.10 for 10% in the equation: 10% * 150 = Y becomes 0.10 * 150 = Y
Do the math: 0.10 * 150 = 15
Y = 15
So 10% of 150 is 15
Double check your answer with the original question: What is 10% of 150? Multiply 0.10 * 150 = 15
2. How to find what percent of X is Y. Use the percentage formula: Y/X = P%
Example: What percent of 60 is 12?
Convert the problem to an equation using the percentage formula: Y/X = P%
X is 60, Y is 12, so the equation is 12/60 = P%
Do the math: 12/60 = 0.20
Important! The result will always be in decimal form, not percentage form. You need to multiply the result by 100 to get the percentage.
Converting 0.20 to a percent: 0.20 * 100 = 20%
So 20% of 60 is 12.
Double check your answer with the original question: What percent of 60 is 12? 12/60 = 0.20, and multiplying by 100 to get percentage, 0.20 * 100 = 20%
3. How to find X if P percent of it is Y. Use the percentage formula Y/P% = X
Example: 25 is 20% of what number?
Convert the problem to an equation using the percentage formula: Y/P% = X
Y is 25, P% is 20, so the equation is 25/20% = X
Convert the percentage to a decimal by dividing by 100.
Converting 20% to a decimal: 20/100 = 0.20
Substitute 0.20 for 20% in the equation: 25/0.20 = X
Do the math: 25/0.20 = X
X = 125
So 25 is 20% of 125
Double check your answer with the original question: 25 is 20% of what number? 25/0.20 = 125
Remember: How to convert a percentage to a decimal
Remove the percentage sign and divide by 100
15.6% = 15.6/100 = 0.156
Remember: How to convert a decimal to a percentage
Multiply by 100 and add a percentage sign
0.876 = 0.876 * 100 = 87.6%
Step-by-step explanation:
factor the trinomial below:
n2+8n+12
Which of these equations represent a proportional relationship?
y=1/2x+3
y=-2x
y=-3/4x-1
y=3x+2
1.7x55 show how to answer
Answer:
93.5
Step-by-step explanation:
55 multiply
1.7
385 ≥ add 385 and 550
550
935 and get 935
Hope this helped you!! i tried to label it the best i could.
Answer:
Hi there! The answer is 93.5
Step-by-step explanation:
55 multiply
1.7
385 ≥ add 385 and 550
550
935 and get 935
add decimal point 93.5
Hope this helps!! Have a nice day! :D
Use the graph on the right to fill in the missing
values below.
The circle has a center at
(3, 0)
(0, 3)
(0,0)
The circle has a center at
✔ (0, 0)
.
If c + di is a point on the circle, then
|c + di |=
3✔
.
I need help with math first one get brainy
Answer:
Lets call it X
Now x = 4+6 = 10
Ramon earns $1,800 each month and pays $53.60 on electricity. To the nearest tenth of a percent, what
percent of Ramon's earnings are spent on electricity each month?
Ramon spends ____% of his eamings on electricity each month.
Answer:
3%
Step-by-step explanation:
So in the most basic form, this question is asking what percent of $1,800 is $53.60. To find the percentage, we are simply going to divide both numbers then multiply by 100.
I'd like to add that by multiplying by 100, we change the number to a percentage. If we were to skip this step, it would just be a small decimal and not in the correct format needed for the answer.
= (53.60/1800) x 100
= (0.02977777777) x 100
= 2.97777777778%
All that is left is to round to the tenths place
State if the two triangles are congruent. If they are, state how you know.
1) SSS
2) SAS
3) ASA
4) AAS
5) NOT CONGRUENT
Pic is up right answer = brainliest
Answer: Your answer is 2) SAS
Step-by-step explanation: Yes, there are congruent.
The two triangles ΔABC and ΔCDA are congruent. Then the correct option is B.
What is a rectangle?It is a polygon with four sides. The total interior angle is 360 degrees. A rectangle's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.
The rectangle is ABCD is given below.
In triangles ΔABC and ΔCDA,
AB = CD (opposite sides)
BC = AD (opposite sides)
∠ABC = ∠ADC = 90°
The two triangles ΔABC and ΔCDA are congruent. Then the correct option is B.
More about the rectangle link is given below.
https://brainly.com/question/10046743
#SPJ2
plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help
Juan’s cell phone company charges $35 a month for phone service plus $0.50 for each text message. How many text messages does Juan send in a month if his bill was $52?
Write the equation and solve:
Answer:
Step-by-step explanation:
52-35=17
17/0.5=34
Answer:
Juan sent 34 text messages.
Step-by-step explanation:
$52 - $35 = $17
$0.50 * 34 = 17
$35 + $17 = $52
Juan the horse.
PLEASE ANSWER THESE QUESTIONS CORRECTLY! IF YOU DO, I WILL MARK YOU AS BRAINLIEST! PLS AND TY THIS IS SOOOOO CONFUSINGGGG TO ME! :D
Answer:
Step-by-step explanation:
7. y=0.25x
8. No, the graph is a positive slope. Saying y=-x implies that there is a negative slope when it is not the case.
9a. y=12x
9b. The equation or graph is proportional relationship if there isn't a change in the graph or equation at all, and it roots back to a consistent ratio. for this one it's 1:12
apply the distributive property to factor out the greatest common factor of 35+50
Answer:
Im gayyyyyyyyy
Step-by-step explanation:
Which expression is equivalent to 4(10+2)?
Answer:
4 x 12
Step-by-step explanation:it is 4 x 12 since if we do pemdas you will add i the parentheses first then you will multiply by 4
find the slope of the line passing through the points (-7, 2) and (3, -2)
Answer:
- 4 / 10 (or -2/5 if you need to simplify)
Step-by-step explanation:
using the point-slope formula, m = (y2-y1) / (x2 - x1)
using the ordered pairs, you get
m = (-2 - 2) / (3 - -7)
m = (-4) / (10)
m= -4/10
if you need to reduce, it's -2/5
Morgan estimates that it will take 12 minutes to download a movie from an online movie store. It
actually took 15.5 minutes to download the movie. Find the percent error. Round to the nearest
whole number, if necessary.
Answer:
29.1666667% Increase
Step-by-step explanation:
First, you subtract the orginal number from the new number. Which means, 15.5 - 12, which is equal to 3.5. Then you take 3.5 and then divide it by 12. Then, multipe it by 100.
Kevin needs to find a cheap courier service to deliver birthday gift to his sister.the first courier he is considering charges $14 plus $7 per pound. The second charges $15 plus $6 per pound . Kevin determine that,given her gift weight, the two courier service are equivalent in terms of cost . How much is the cost? how much is the weight?
Answer:
the cost is 21$, and it weighs 1 pound.
Step-by-step explanation:
Help plz:))) I’ll mark u brainliest ASAP 10
Answer:
23 , 22 , 18 . i'm sorry if wrong
Answer:
i believe its C
Step-by-step explanation: