2 years ago

The sum of two numbers is 128. Their difference is 4. What are the numbers?

Mathematics

2 answers:

eduard2 years ago

7 0

Answer:

I dont understand is it 32 and 4 and 64 +64 is a sum 128

Step-by-step explanation:

Naddik [55]2 years ago

3 0

Answer:

66 and 62

Step-by-step explanation:

128 divided by 2 gives you 64, and by taking two away from one number and giving it to the other, you're final answers are 66 and 62

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olga55 [171]

Answer:

Step-by-step explanation:

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5 0

2 years ago

Breyers is a major producer of ice cream and would like to test the hypothesis that the average American consumes more than 17 o

zhenek [66]

Answer:

The p-value would be 0.0939

Step-by-step explanation:

We can set a standard t-test for the Null Hypothesis that $H_0: 18.2\geq 17$

The test statistic then takes the form

$t=\frac{18.2-17}{3.9/\sqrt{15}}=1.317$

with this value we then can calculate the probability that is left to the right of this value $P(X>1.317)$ . From theory we know that t follows a standard normal distribution. Then $P(X>1.317)=0.0939$ which is smaller than the p-value set by Breyers of 0.10