Compute the range and sample standard deviation for strength of the concrete (in psi). 3990, 4080, 3100, 3000, 2950, 3850, 4080, 4010

ddsf

step-by-step explanation:

dfs

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

probably .5

i can on others if necessary.

the answer is a and d