Step-by-step explanation:
A.
15/5 = 3, 21/7 = 3 -- scale factor is 1/3 since he must divide by 3 to get the side lengths for the photo card
B.
Area = width*length, and scale factor is 5. Therefore, the new width is (15*5) and the new length is (21*5), so the new area is 15*5*21*5 = 15*21*5² = 15*21*25 = 315*25 = 7875 in²
Answer:
The sample size needed is 40000.
Step-by-step explanation:
The sample size needed is:
Use this formula to determine the sample size needed for a margin of error of 0.005
This is n when 
. So
The sample size needed is 40000.
Answer:
Hope it helps
Step-by-step explanation:
A.)-8-5 X -8+6
-13 X -2
+26
B.)-3-8 = 2 X 4
-11≠8
please mark brainliest
Answer:
60ft
Step-by-step explanation:
multiply all the #
I believe the answer is B!
Hope this helped!
