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3 years ago

PLEASE ANSWER QUICKLY!!! PLZZZZZ!!!!!!!

Mathematics

2 answers:

Hoochie [10]3 years ago

4 0

Step-by-step explanation:

each 20m miles takes 1g gallon.

igor_vitrenko [27]3 years ago

4 0

Answer:

$y=-\frac{1}{20} x + 20$

Step-by-step explanation:

The slope equation is always $\frac{rise}{run}$ . In this case, the gallons went down by 1- so we can call the rise -1. When it went down by 1, the miles went up by 20- so we can call the run 20. This gives us a fraction (the "m" value) to put in the slope equation $y=mx+b$ . To find the y intercept (the "b" value), you find out what y is when x = 0, which is given in the chart: 20.

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Belle borrowed $18.275 to buy a new car. The interest rate she agreed to pay is 5%. If she takes 5 years to pay back the loan, h

mamaluj [8]

Answer:

$22843.75

Step-by-step explanation:

I'm assuming that $18.275 is $18,275

First, converting R percent to r a decimal

r = R/100 = 5%/100 = 0.05 per year,

then, solving our equation

I = 18275 × 0.05 × 5 = 4568.75

I = $ 4,568.75

The simple interest accumulated

on a principal of $ 18,275.00

at a rate of 5% per year

for 5 years is $ 4,568.75.

4 0

3 years ago

Read 2 more answers

How do i do this problem im stuck.

poizon [28]

Answer:

divide y by x and you should know the answer for the blanks

Step-by-step explanation:

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3 years ago

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In a study of cell phone usage and brain hemispheric dominance, an Internet survey was e-mailed to 6997 subjects randomly sele

tankabanditka [31]

Answer:

$z=\frac{0.185 -0.2}{\sqrt{\frac{0.2(1-0.2)}{6997}}}=-3.137$

$p_v =P(z$

Since the p value is very low we have enough evidence to reject the null hypothesis at the significance lvel given of 0.01 so then we can conclude that the return rate ofr this case is significantly lower than 20%

Step-by-step explanation:

Data given

n=6997 represent the random sample taken

X=1296 represent the returned surveys

$\hat p=\frac{1296}{6997}=0.185$ estimated proportion of returned surveys

$p_o=0.2$ is the value that we want to test

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

System of hypothesis

We need to conduct a hypothesis in order to test the claim that the true proportion of returned surveys is less than 0.2.:

Null hypothesis: $p\geq 0.2$

Alternative hypothesis: $p < 0.2$

The statistic is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Calculate the statistic

Since we have all the info required we can replace in formula (1) like this:

$z=\frac{0.185 -0.2}{\sqrt{\frac{0.2(1-0.2)}{6997}}}=-3.137$

Statistical decision

The next step would be calculate the p value for this test.

Since is a left tailed test the p value would be:

$p_v =P(z$

8 0

3 years ago

Solve the following equation in the picture....thanks:)

USPshnik [31]

The Verdicts on each value of u according to the given inequality are as follows; 11, 13 and 8.

<h3>What values ares solutions to the inequality; u ≤ 13?</h3>

It follows from the task content that the values which are solutions to the inequality; u ≤ 13 are to identified.

To determine the solution of an inequality on a number line, the number line representation of such inequality is very pivotal.

Therefore, the inequality given; u ≤ 13 simply implies that; the solution set of u includes 13 and all numbers to the left of 13 on the number line.

Hence, by considering each of the given values of u; we have;

11 ≤ 13?; Yes.
13 ≤ 13?; Yes.
8 ≤ 13?; Yes.
18 ≤ 13?; No.

Ultimately, the solutions to the inequality among the answer choices are; 11, 13 and 8 respectively.