For the given word problem, the cost to rent each chair is $5.25 and each table is $2.625
What is a word problem?
A word problem is a short passage presenting a "real-life" situation where an issue needs to be solved using math. The word problem for groups is a classic example, but there are numerous additional examples as well. This question is in many significant circumstances undecidable, which is a profound conclusion of computational theory.
Let C be the cost per chair
Let T be the cost per table
The total cost to rent 5 chairs and 6 tables is $53.
Then, 5C+6T=42 ................ (i)
The total cost to rent 3 chairs and 2 tables is $21.
Then, 3C+2T=21 ................. (ii)
Now, by solving both equations, multiply (ii) by 3 and subtract (i), we get
9C - 5C = 63 - 42
or, 4C = 21
or, C = $5.25
Then, T = (21-3*5.25)/2 = $2.625
Hence, the cost to rent each chair is $5.25 and each table is $2.625
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What is the simplified expression for 2 power 2 multiplied by 2 power 3 over 2 power 4
Answer:
ANS:- 2
Step-by-step explanation:
= (2^2)(2^3/2^4)
= (4)(8/16)
=(4)(1/2)
=4/2
= 2
A movie theater has a seating capacity of 283. The theater charges $5 for children, $7 for students, and $12 of adults. There are half as many adults as there are children. If the total ticket sales was $2,042, How many children, students, and adults attended?
children attended.
students attended.
adults attended.
Which estimated solution is closest to the actual solution shown in the graph?
Question 7 options:
(3,3)
(6,1)
(0,2)
(4,5)
(7,7)
(4,3)
(2,4)
Answer:
(7) (2, 4)
Step-by-step explanation:
You want to know which of the offered points is closest to the point of intersection of the two graphed lines.
SolutionThe point of intersection can be read from the graph as approximately (2 1/3, 3 3/4). The nearest grid intersection to that point is (2, 4), which is the last point on the list of choices.
(2, 4) is closest to the actual solution
__
Additional comment
You can see this, too, by graphing the offered choices. There are none closer than (2, 4).
PLEASE HELP NO PLAYING ON MY QUESTION
The percentage for blue balls will be 56% and the percentage for red balls will be 44%.
What is the percentage for the colors of the gumball?A percentage is a value or ratio that may be stated as a fraction of 100. If we need to calculate a percentage of a number, we should divide it's entirety and then multiply it by 100. The percentage, therefore, refers to a component per hundred.
In this situation, there are 4000 balls and 2240 of then are blue while 1760 are red.
The percentage for blue balls will be:
= Number of blue balls / Total balls × 100
= 2240 / 4000 × 100
= 56%
The percentage for red balls will be:
= Number of red balls / Total balls × 100
= 1760 / 4000 × 100
= 44%
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write 8/10 in simplest form:
-
write the answer in the form a/b for example, 1/2
The Video “The Math and Magic of Origami”describes several examples in which scientists and engineers use origami to solve problems. Which of the following is NOT one of the applications described?
The option that is not one of the application described is C. Building a bridge.
What role does origami play in engineering?Origami created through mathematical interpretation and computation is known as mathematical origami, and it has resulted in the modeling of numerous novel origami-based structures outside of the realm of the arts. Furthermore, mathematical origami inspires the creation of new structures and mechanisms in engineering.
Origami-inspired engineering has been used in NASA space equipment, the development of better heart stents, and even DNA folding in microbiology.
Origami-based designs are the use of the ancient art of origami to solve various engineering problems. Regardless of the scale at which they are implemented, origami-based designs are always defined by the laws that govern their geometrical properties at any scale.
Furthermore, for large flat structures, origami allows for the reduction of dimensions while ensuring simple deployment this is especially useful for solar arrays in space applications.
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The Video "The Math and Magic of Origami" describes several examples in which scientists and engineers use origami to solve problems. Which of the following is NOT one of the applications described?
A.A heart stent
B. A space telescope
C. Building a bridge
D. Air bags in cars
Binary form can be represented as
a A B C A
b A B
c A B A
d A B A C B A
The binary form can be represented as AB or AABB. So the write option is b.
One of the four different kinds of number systems is the binary number system. When used in computer programmes, binary numbers are solely represented by the digits 0 (zero) and 1. (one). Here, the base-2 numeric format is used to express the binary numbers.
Because the binary system is directly implemented in electronic circuits using logic gates, nearly all modern computers and computer-based gadgets employ it internally. A bit is used to describe each digit.
The binary form is a set of alphabetical character that is used to describe a musical piece using two sections of equal length. It can be represented as AB or AABB. So the write option is b.
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What is the slope of the line on this graph?
Enter your answer in the box.
Answer: 6 units
Step-by-step explanation:
There are two ways to do this. You can either choose 2 points on the graph and find the rise/run, or you can plug them in the formula. Let's choose the two points that are dotted. (1,5) and (0,-1)
Let's first do rise/run.
From (0,-1) to (1,5) the rise is 6 units, and the run is 1 unit. So we just divide that. 6/1 which means the slope is 6 units.
We can also use the formula: m = y2 - y1 / x2 - x1
(0,-1) will be our first coordinate and (0,-1) will be our second coordinate. So 0 is x1 and -1 is y1, 1 will be x2 and 5 will be y2. Now we just plug in the numbers
m=5-(-1)/1-0
m=5+1/1-0
m=6/1
m=6 units
So in both ways we get that the slope is 6 units.
The fox population in a certain region has a continuous growth rate of 6 percent per year. It is estimated that the population in the year 2000 was 25100.
(a) Find a function that models the population
t
years after 2000 (
t
=
0
for 2000).
Your answer is
P
(
t
)
=
(b) Use the function from part (a) to estimate the fox population in the year 2008.
Your answer is (the answer must be an integer)
The function is f(x) = 25100(1 + 0.06)ˣ and the estimate fox population in the year 2008 is 40,0005.
What is an exponential function?It is defined as a function that rapidly increases and the value of the exponential function is always a positive. It denotes with exponent y = a^x
where a is a constant and a>1
It is given that:
The fox population in a certain region has a continuous growth rate of 6 percent per year
f(x) = a(1 + r)ˣ
f(x) = 25100(1 + 0.06)ˣ
Plug x = 8 years
f(8) = 25100(1 + 0.06)⁸
f(8) = 40,0005
Thus, the function is f(x) = 25100(1 + 0.06)ˣ and the estimate the fox population in the year 2008 is 40,0005.
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The following stem and leaf plot shows the average high temperatures during each month in the state of Ohio. Use the data to answer questions 7-8.
7) What is the minimum temperature?
A) 38
B) 31
C) 91
D) 67
Answer:
B) 31
Step-by-step explanation:
Given a stem and leaf plot, you want to identify the minimum value.
OrderingThe values in a stem and leaf plot are ordered with the smallest stems at the top, and the smallest leaves to the left. The smallest value on the plot will be the one at upper left.
Minimum valueThe minimum value on this chart has a "stem" of 3 and a "leaf" value of 1. That is the representation of the data value 31.
The minimum temperature shown on the chart is 31.
Estimate. Then tell if your estimate is an overestimate or underestimate
The numbers that will be estimated based on the information will be 550 + 298 which gives an estimation of 850. This is an overestimation.
What is an estimation?You must approximate (eliminate or round off) the decimals to obtain whole numbers before you can use the whole numbers to find the product of two decimals using estimation.
The estimate is erroneous if only factors with even numbers are taken into account. The estimate is understated if only factors are rounded down.
In this case, 550 + 298: 298 is nearly 300 so an estimate is:
= 550+300
= 850
This is an overestimation.
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Complete question
Solve an estimation of your choice. Then tell if your estimate is an overestimate or underestimate
How do I solve this?
The required probability is 0.8437 that a dart hitting the board will land in the unshaded area.
The total area of the board = 8 x 8 = 64 square inches
The area of the shaded region = 15 square inches
The probability of landing in the shaded region is the ratio of the unshaded area to the total area.
The unshaded area = 64 - 15 = 54 square inches
So, the required probability is:
P(unshaded) = 54/64 = 0.8437
Thus, the required probability is 0.8437 that a dart hitting the board will land in the unshaded area.
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2/125x10,13+2/27x10,13
The value of the expression 2/125x1013 + 2/27x1013 is 91.248.
How to illustrate the expression?It is important to note that an expression is simply used to show the relationship between the variables that are provided or the data given regarding an information. In this case, it is vital to note that they have at least two terms which have to be related by through an operator.
The expression will be Illustrated as:
2/125x1013 + 2/27x1013
= (0.016 × 1013) + (0.0740741 × 1013)
= 16.208 + 75.04
= 91.248
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Complete question
2/125x1013 + 2/27x1013
which statement describes the end behavior of the function ? f(x)= x2-4/x2-9
3) A restaurant requires customers to pay a 15% tip for the server. Your family spends
$65 on the meal.
a) How much money do you need to pay the server?
Answer: You would leave $9.75 for the tip.
Step-by-step explanation:
15% of 65 is 9.75, so when you add 15% to 65 you get 74.75. In total you would be paying $74.75 but you would leave a $9.75 tip for the server.
Prob-1A random sample of 21 glass sheets is obtained and their thicknesses are measured. The sample mean is x= 3.12 mm and sample standard deviation is S = 0.14 mm. Construct a 95% two-sided confidence interval for the mean glass thickness.
For the typical glass thickness of 3.12 mm, the 95% two-sided confidence interval will be (3.067,3.173).
What is confidence interval?An area created using fixed-size samples of data from a population (sample space) that follows a particular probability distribution is known as a confidence interval. A selected population statistic is built into the interval with a specified probability. An estimate's level of uncertainty is described by a confidence interval, which is a range of numbers.
Here,
mean x=3.12 mm
Standard deviation s=0.14 mm
number of sample n=21
two-sided confidence interval,
=x±tₐ÷₂(s/√n)
a=1-0.95
a=0.05
t₀.₀₅,₂₀=1.725
=3.12±1.725*(0.14/√21)
=3.12±1.725*(0.14/4.58)
=3.12±1.725*0.0306
=3.12±0.053
=(3.067,3.173)
The 95% two-sided confidence interval for the mean glass thickness of 3.12 mm will be (3.067,3.173).
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Ziva bought 6 ⅘ balls of thread for a sweater, but she only ended up using 8 6/12 balls. What fraction of the thread did Ziva use?
Is this how we solve it?
8 6/12 by - 6 4/5 = A
Hope this helps
i think that's how we are supposed to do the problem can someone do a walk through for me with variables so i can find it on my own i just need help. I was trying to find a tutor cause I'm confused. But is that how were supposed to do it cause tutor.com isn't working.
Most likely we have to simplify and then subtract it? I hope that's how you solve it!
nvm i think i got it
based on the spss output what cna you concllude about the relationship between degree attainment and age dbrn for men
There is sufficient statistical evidence at 5% level of significance that there is relationship between degree attainment and AGEKDBRN for women.
What is ANOVA model for men?
To ascertain whether there are any statistically significant differences between the means of three or more independent (unrelated) groups, the one-way analysis of variance (ANOVA) is used.
An n-way ANOVA allows a researcher to employ more than two independent variables (with n being the number of independent variables you have). For instance, any disparities in IQ scores can be investigated concurrently by country, gender, age group, ethnicity, etc.
Relationship between degree attainment and AGEKDBRN for women
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How do you complete the square for this problem ? (if you just explain to me how to complete the square of a trinomial it would be gladly appreciated)
a^2 + 2a - 3
a^2 - 2a - 8
p^2 + 16p - 22
The complete square of the a² + 2a - 3 = 0,a² - 2a - 8 = 0 and p² + 16p - 22 = 0 are (a + 1)² - 4 = 0,(a - 1)² - 9 = 0 and (p + 8)² - 86 = 0 respectively.
What is an expression?A mixture of variables, numbers, addition, subtraction, multiplication, and division are called expressions.
An expression is a mathematical proof of the equality of two mathematical expressions.
As per the given trinomial,
a² + 2a - 3 = 0
a² + 2a = 3
Add 1 on both sides,
a² + 2a + 1 = 3 + 1
(a + 1)² = 4
(a + 1)² - 4 = 0
As per the given trinomial,
a² - 2a - 8 = 0
a² - 2a = 8
Add 1 on both sides,
a² - 2a + 1 = 8 + 1
(a - 1)² = 9
(a - 1)² - 9 = 0
As per the given trinomial,
p² + 16p - 22 = 0
p² + 16p = 22
Add 64 on both sides,
p² + 16p + 64 = 22 + 64
(p + 8)² = 86
(p + 8)² - 86 = 0
Hence "The complete square of the a² + 2a - 3 = 0,a² - 2a - 8 = 0 and p² + 16p - 22 = 0 are (a + 1)² - 4 = 0,(a - 1)² - 9 = 0 and (p + 8)² - 86 = 0 respectively".
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Suppose you get $1000 from your uncle. you deposited that money in a bank and added $15 per month.
Write an equation to model how much money you have deposited after m months. Let s be the amount you have deposited.
What equation would you solve to figure out how many months it would take to save $10,000 dollars?
How many months would it take to save $10,000?
Answer:
s = 1000 + 15m
Save $10,000 equation: 10,000 + 15 m
Months it takes to save = 600 months
Step-by-step explanation:
You first deposit the $1000 your uncle gave you and then, each month, you add $15. So the first month the account will have,
1000 + 15
After the second month, it will have,
1000 + 15 + 15
And so on. Therefore, the equation that models your savings s after m months is,
s = 1000 + 15m
If we want to find how many months it will take to save $10,000 we have to solve the equation for s = 10,000:
10,000 = 1000 + 15m
To solve it, subtract 1000 from both sides of the equation,
10,000 - 1000 = 1000 - 1000 + 15m
9000 = 15m
And divide both sides by 15,
9000/55 = 55m/55
600 = m
It will take 600 months to save $10,000.
A function is shown. ƒ (x) = 2x − 9
-
What is the value of ƒ (−4) ?
Answer: To find the value of ƒ (−4), we substitute −4 for x in the function ƒ(x) = 2x − 9:
ƒ(−4) = 2(−4) − 9
Performing the multiplication and addition, we get:
ƒ(−4) = −8 − 9
Thus, the value of ƒ(−4) is equal to −17.
Answer: ƒ (−4) = -17
Step-by-step explanation:
To find the value of ƒ (−4) we will substitute all values of x for -4 in the original function and simplify.
ƒ (−4) = 2x - 9
ƒ (−4) = 2(-4) - 9
ƒ (−4) = -17
1/4 + X - 1/3=2/3+3+1/4
Answer: x=4
Step-by-step explanation:
Answer:
Step-by-step explanation:
x = 4
With enough variables, it is possible to get an R2 value close to 1, even if the variables have no particular meaning in the model
A)True
B)False
With enough variables, it is possible to get an R2 value close to 1, even if the variables have no particular meaning in the model - True
If the model has a significant number of variables, it is still possible to obtain an R-squared value that is near to 1, even if the variables have no particular significance. R-squared is a metric used to evaluate how well a model fits data; it has a range from 0 to 1, with 1 denoting a perfect fit.
A high R-squared value does not, however, guarantee that the model fits the data well or that the variables it uses are significant. To ensure that the model accurately represents the underlying relationships in the data, it is crucial to carefully analyze the meaning and relevance of the variables included in the model, as well as other evaluation metrics like residual plots and cross-validation.
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University Car Wash built a deluxe car wash across the street from campus. The new machines cost $267,000 including installation. The company estimates that the equipment will have a residual value of $24,000. University Car Wash also estimates it will use the machine for six years or about 12,000 total hours. Actual use per year was as follows: Year Hours Used 1 3,000 2 1,200 3 1,300 4 2,700 5 2,500 6 1,300 Required: 1. Prepare a depreciation schedule for six years using the activity-based method. (Do not round your intermediate calculations.)
The depreciation schedule for the new machines of University Car Wash, using the activity-based method, is as follows:
Year Initial Cost Depreciation Accumulated Net Book Value
Expense Depreciation
1 $267,000 $60,750 $60,750 $206,250
2 $267,000 $24,300 $85,050 $181,950
3 $267,000 $26,325 $111,375 $155,625
4 $267,000 $54,675 $166,050 $100,950
5 $267,000 $50,625 $216,675 $50,325
6 $267,000 $26,325 $243,000 $24,000
What is a depreciation schedule?A depreciation schedule is a table that shows the annual depreciation expense, the accumulated depreciation over the years, and the net book value of each asset, including the initial cost.
An activity-based method of depreciation uses the machine hours or other activity bases used to determine each year's depreciation expenses.
Cost of machines = $267,000
Residual value = $24,000
Depreciable amount = $243,000 ($267,000 - $24,000)
Estimated useful life = 6 years or 12,000 total hours
Hourly depreciation rate = $20.25 ($243,000/12,000)
Year Annual Depreciation Expense
1 $60,750 (3,000 x $20.25)
2 $24,300 (1,200 x $20.25)
3 $26,325 (1,300 x $20.25)
4 $54,675 (2,700 x $20.25)
5 $50,625 (2,500 x $20.25)
6 $26,325 (1,300 x $20.25)
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IJ is a midsegment of triangle MLN. What is the length of segment IJ?
The length of segment IJ is 6 units.
What is a line segment?
A line segment in geometry has two different points on it that define its boundaries. A line segment is sometimes referred to as a section of a line that links two places. The difference between a line and a line segment is that a line has no endpoints and can go on forever in either direction.
Given that IJ is a midsegment of △LMN.
The line segment IJ is parallel to NL.
Thus the length of IJ is half of NL.
Therefore,
2 × IJ = LN
2 (x + 3) = 3x
2x + 6 = 3x
Subtract 3x from both sides:
-x + 6 = 0
x = 6.
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Find the equation of the linear function represented by the table below in
slope-intercept form.
X
-2
1
4
7
y
6
-6
-18
-30
Answer:
Step-by-step explanation:
the answer c which is 3,280
Draw the graph of y = 2x − 3 for values of x from 0 to 4.
4x²-17x+ k = 0 has the reciprocal roots.
Answer: k=4
Step-by-step explanation:
4x²-17x+k=0
Divide both parts of the equation by 4:
[tex]\displaystyle\\\frac{4x^2}{4}-\frac{17x}{4}+\frac{k}{4}=0\\\\x^2-\frac{17}{4} x +\frac{k}{4} =0\\[/tex]
Let one of the roots of this equation be α
Then the other root of this equation is 1/α
Hence,
[tex]\displaystyle\\\alpha (\frac{1}{\alpha })=\frac{k}{4} \\\\\frac{\alpha }{\alpha }= \frac{k}{4} \\\\1=\frac{k}{4}[/tex]
Multiply both parts of the equation by 4:
4=k
Thus, k=4
18. A new college entrance exam scores designed so that for a reference population they are
distributed normally, with mean 650 and standard deviation 125. Based on this
information:
a. What percentage of students in the reference population scored above 775?
b. Between what two scores did the middle 95%of the reference population score?
c. Out of every 1,000 people in the reference population, approximately how many
scored below 525?
a. The percentage of students in the reference population scored above 775 is of: 16%.
b. The middle 95% of scores were between 400 and 900.
c. Approximately 160 students scored below 525.
How to obtain probabilities using the normal distribution?The z-score of a measure X of a variable that has mean symbolized by [tex]\mu[/tex] and standard deviation symbolized by [tex]\sigma[/tex] is obtained by the rule presented as follows:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The z-score represents how many standard deviations the measure X is above or below the mean of the distribution, depending if the obtained z-score is positive or negative.Using the z-score table, the p-value associated with the calculated z-score is found, and it represents the percentile of the measure X in the distribution.The mean and the standard deviation in this problem are given as follows:
[tex]\mu = 650, \sigma = 125[/tex]
Then the proportion of students who scored above 775 is one subtracted by the p-value of Z when X = 775, hence:
Z = (775 - 650)/125
Z = 1.
Z = 1 has a p-value of 0.84.
1 - 0.84 = 0.16, hence the percentage is of:
0.16 x 100% = 16%.
By the Empirical Rule, the middle 95% of scores are within 2 standard deviations of the mean, hence:
650 - 2 x 125 = 400.650 + 2 x 125 = 900.The proportion of students who scored below 525 is the p-value of Z when X = 525, hence:
Z = (525 - 650)/125
Z = -1.
Z = -1 has a p-value of 0.16.
Then the amount out of 1000 students is of:
0.16 x 1000 = 160 students.
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!! Please help
Solve the system using substitution
x + 3y = 3
3y - 2x = 12