Answer:
? = 10
Step-by-step explanation:
Let " ? " be x.
5 / x = x / 20
x * x = 5 * 20
x² = 100
[ 100 = 10 x 10 = 10² ]
x² = 10²
x = 10
Answer:
Total tape used by marge is 6 inches .
Step-by-step explanation:
As given
marge cut 16 pieces of tape for mounting pictures on poster board.

Total tape marge uses = Number of pieces × Each piece length

Total tape marge uses = 2 × 3
= 6 inches
Therefore the total tape used by marge is 6 inches .
Answer:
nk to the answer:
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Step-by-step explanation:
Answer:
7 messages
Step-by-step explanation:
1 week = 7 days
7 messages a day.
49 divide by 7
Answer: 0.6368
Step-by-step explanation:
Given : The proportion of z-test for population mean : 
Sample size : 
We assume that this is normally distributed.
The test statistic for population proportion :-

Now, for
, we have

By using the standard normal distribution table , the probability that at least 82% of the surveyed students will be attending college will be :-

Hence, the probability that at least 82% of the surveyed students will be attending college = 0.6368