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astraxan [27]
3 years ago
12

You have nickels,dimes,and quarters to make a call that costs $0.75 how many different combinations of coins can you use to pay

for the call
Mathematics
1 answer:
Sveta_85 [38]3 years ago
4 0
17 possible combinations

1.
  3 quarters
2.  2 quarters, 1 dime, 1 nickel
3.  2 quarters, 3 nickels
4.  1 quarter, 5 dimes
5.  1 quarter, 4 dimes, 2 nickels
6.  1 quarter, 3 dimes, 4 nickels
7.  1 quarter, 2 dimes, 6 nickels
8.  1 quarter, 1 dime, 8 nickels
9.  1 quarter, 10 nickels
10.  7 dimes, 1 nickel
11.  6 dimes, 3 nickels
12.  5 dimes, 5 nickels
13.  4 dimes, 7 nickels
14.  3 dimes, 9 nickels
15.  2 dimes, 11 nickels
16.  1 dime, 13 nickels
17.  15 nickels
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zhenek [66]

The total price for the gallons of paint will be 35.75p

The total price for the rollers will be 6r

So the equation if the customer have 190 will be

price for gallons of paint + price for rollers = 190

35.75p + 6r = 190

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7 0
3 years ago
The chamber of commerce of a Florida Gulf Coast community advertises that area residential property is available at a mean cost
Alja [10]

Answer:

a) In the step-by-step explanation.

b)  The null and alternative hypothesis are:

H_0: \mu=125000\\\\H_a:\mu> 125000

c) P-value = 0.015

d) The conclusion, at a level of significance of 0.05, is that there is enough evidence to support the claim that that area residential property is available at a mean cost significantly higher than $125,000 per lot.

e) The claim of the chamber of commerce is false. We have statistical evidence against that claim and we can conclude that the mean prices are significantly higher than $125,000.

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim, expressed in the alternative hypothesis, is that area residential property is available at a mean cost significantly higher than $125,000 per lot.

Then, the null and alternative hypothesis are:

H_0: \mu=125000\\\\H_a:\mu> 125000

The significance level is 0.05.

The sample has a size n=32.

The sample mean is M=130000.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=12500.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{12500}{\sqrt{32}}=2209.71

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{130000-125000}{2209.71}=\dfrac{5000}{2209.71}=2.26

The degrees of freedom for this sample size are:

df=n-1=32-1=31

This test is a right-tailed test, with 31 degrees of freedom and t=2.26, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=P(t>2.26)=0.015

As the P-value (0.015) is smaller than the significance level (0.05), the effect is  significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that that area residential property is available at a mean cost significantly higher than $125,000 per lot.

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3 years ago
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alexira [117]

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7 0
3 years ago
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Sliva [168]

Answer:Yes it will remain the same

Step-by-step explanation:

because you are adding the same amount to both sides!

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Y-2x + 1<br> How to do it
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Answer:

It is in simplest form so you leave it like that

Step-by-step explanation:

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