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2 years ago

20. The table shows the numberof days you keep a rented movie before returning it and the total cost of renting the

Mathematics

1 answer:

Harlamova29_29 [7]2 years ago

5 0

Step-by-step explanation:

According to given table we have pairs of points:

(4, 6.00), (5, 8.25), (6, 10.50)

The rate of change is:

(8.25 - 6.00)/(5 - 4) = 2.25

(10.50 - 8.25)/(6 - 5) = 2.25

It is 2.25 and the meaning is:

Rental per day is $2.25

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hunter has a jar of 368 nickels and dimes. the total value of coins is $28.40. which system of equations below would be the best

gavmur [86]

Answer:

We can't see your answer choices, but it would be n + d = 368 and .05n + .10d = 28.40

Step-by-step explanation:

4 0

2 years ago

A student decided to start saving money.On the first day he saved 1 cent, on the second day an additional 2 cents, on day 3 he s

Lapatulllka [165]

Answer:

The correct option is option (B).

He would be saving $10,485.75.

Step-by-step explanation:

We know that,

1 cent =$ 0.01.

Geometric sequence:

The first term of the sequence be a and common ratio n, then $n^{th}$ term of the sequence is $T_n=a(r)^{n-1}$ .
The sum of the sequence is

$S_n=\frac{a(r^n-1)}{r-1}$ where r>1

$=\frac{a(1-r^n)}{1-r}$ where r<1

=na where r=1

Here first term(a)= $0.01, r= 2 , n=20

$S_n=\frac{0.01(2^{20}-1)}{2-1}$

=10,485.75

He would be saving $10,485.75.

4 0

3 years ago

You need to test a claim that more than 18% of students at your campus do not know their blood types. Which sampling method woul

DerKrebs [107]

Given that:

$p = 18\%$ ---- i.e. the proportions that do not know their blood group

There are several sampling methods, however the best sampling method to use in this case is a simple random sampling.

This is because it gives each student in the campus an equal chance of being selected to participate.

The sample would be collected from the population of students in the school campus.

From the question, given proportion is about the students in the campus. So, the sample to be selected must represent the case study, which are the students

The chosen sample would be used by conducting a test of hypothesis

To carry out this test, we need to set the null and alternate hypotheses.

Then calculate the critical value.

Then the test statistic.

How the test statistic compares to the critical value will determine if the null hypothesis will be accepted or rejected

Further reading:

brainly.com/question/22850174

6 0

2 years ago

Which of the following are true if you pay only the minimum amount each month towards your credit card bill? AYou will be charge

faust18 [17]

Answer:

A- You will be charged interest on your remaining balance.

C- You may be in debt for a long time.

Step-by-step explanation:

The following are true if you pay only the minimum amount each month towards your credit card bill:

Firstly one will be charged interest on the remaining amount. Suppose you had a bill of $500. But you paid the minimum of $100. So, you will be charged your standard interest rate on $400.

And with this format, one will be in a debt for a long time as each month some new balance will be added to the previous one.

So, options A and C are true.

B is not true as the interest rates are not changed during the cycle.

8 0

3 years ago

Read 2 more answers

If 4f(x)+f(5-x)=x2 What is f(x)?

aksik [14]

We are given that $4f(x)+f(5-x)=x^2$ .

Substitute x with 5-x, then the above equation becomes:

$4f(5-x)+f(5-(5-x))=(5-x)^2$ , that is

$4f(5-x)+f(x)=(5-x)^2$

So, we have the following system of equations:

i) $4f(x)+f(5-x)=x^2$
ii) $4f(5-x)+f(x)=(5-x)^2$

multiply the first equation by -4, so that we eliminate f(5-x)'s

i) $-16f(x)-4f(5-x)=-4x^2$
ii) $4f(5-x)+f(x)=(5-x)^2$

adding the 2 equations side by side we have:

$-15f(x)=-4x^2+(5-x)^2$

expanding the binomial, and collecting same terms we have:

$-15f(x)=-4x^2+(25-10x+x^2)$

$-15f(x)=-3x^2-10x+25$

dividing by -5:

$3f(x)=\frac{3}{5}x^2+2x-5$

dividing by 3:

$\displaystyle{f(x)= \frac{1}{5}x^2+ \frac{2}{3}x-\frac{5}{3}$

Answer: $\displaystyle{f(x)= \frac{1}{5}x^2+ \frac{2}{3}x-\frac{5}{3}$

6 0

3 years ago