<span>y=-40x+100 This equation says your friend lives 100 miles away and travels 40 miles per hour. He takes 2.5 hours to get there.
y = -40x + 100 If y=0 then x = 100/40 = 2.5 hours and if x=0 then y=100.
You are 150 miles away and it takes you 2.5 hours to get there so your equation is:
0 = -2.5v + 150 You are solving for velocity.
v = 150/2.5 = 60 miles per hour. Now we can write the answer to the problem.
y = -60x + 150 Compare that to the original statement.
y = -40x + 100 Your buddy's speed is 40 and yours is 60. He has 100 miles to go and you have 150. Otherwise it's the same equation.</span><span>
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Answer:
The answer is E. Impossible to determine
Step-by-step explanation:
Normally, you would find the Confidence interval of a normal sample by using
X(-+) Z* Sigma/n
Where x is the mean, sigma the standard deviation n the size of the sample and z the value determined by your confidence interval size of 95%
.However, this approximation of a confidence interval may only be used for a sample if the number of observations is at least 30 or above. When we have less observations than 30 we must use the standard deviation of the populations. But we only have a sample standard deviation so its not adequate or possible to determine CI the true mean of the population with such a small sample size.
Answer:
Yes
Step-by-step explanation:
It passes the vertical line test or pencil test which means that it only touches one point at a time.
56/72 can be simplified to 14/18, then to 7/9 *dividing by 4, then by 2*
28/32 can be simplified to 7/8 *dividing by 4*
70/90 can be simplified to 7/9 *dividing by 10*
7/9 and 7/9 are equivalent, so 56/72 and 70/90 are equivalent.
