Answer:
20 and 13
Step-by-step explanation:
If one list is 'a' and the other one is 'b' then
a-b = 7 and a+b = 33
a-b+a+b = 7+33
2a = 40
a = 20
Now, 20 - b = 7
-b = -13
b = 13
Answer:
B)subtract
Step-by-step explanation:
Danielle would have to use the subtract operation to find out if she had enough money to buy the blouse after buying the CDs.
It would turn out like this:
$100 - $37 = $63
Now since Danielle knows that she has $63 dollars left, she has more than enough to buy the $53 blouse.
Answer:
Step-by-step explanation:
a) prob(king first, Jack second)
= (4/52)(4/51) = 4/663
Answer:
The perimeter of the room is 12m
Answer:
<u>The correct answer is A. -1.69</u>
Step-by-step explanation:
1. Let's review the information given to us to answer the question correctly:
Mean of the popping time of the kernels in a brand of microwave popcorn = 150 seconds
Standard deviation of the popping time of the kernels in a brand of microwave popcorn = 13 seconds
Time that first kernel pops = 128 seconds
2. What is the z-score of this kernel? Round your answer to two decimal places.
z-score = (Time that first kernel pops - Mean of the popping time)/Standard deviation of the popping time
Replacing with the real values, we have:
z-score = (128 - 150)/13
z-score = -22/13
<u>z-score = - 1.69</u>
<u>The correct answer is A. -1.69</u>
