Answer:
12
Step-by-step explanation:
Note that 60 minutes is 1 standard deviation away from the mean and from recalling the 68-95-99.7 rule, the area that will remain is (100 - 68) = 32%. However, we only want the leftmost portion of this area, so the answer is 32%/2 = 16%.
<span>Choose D.</span>
I have my work at the bottom but to explain you have to divide 30/12, and I got 2.5. That means 30 is 2.5 times bigger than 12. Because we have to find x, we have to divide 7/2.5, to find what is 2.5 times smaller than 7. That’s 2.8. So, x= 2.8
Solve for b?
1. Distribute “4(4b+3)” and “3(6-11)”
16b+12+2b=18-33
2. combine like terms
18b+12=-15
18b=-27
b=-27/18
3. simplify
b=3/2
Answersorry
Step-by-step explanation:sorry idk