Answer: The percent of the coins are quarters = 64%.
Step-by-step explanation:
According to the given question , we have
The fraction of coins are quarters in the coin collection = 
We know that to convert a fraction into percent , we multiply it by 100 .
Then , the percent of the coins are quarters = 
which is equal to 
Therefore , the percent of the coins are quarters = 64%.
Answer:
$30
Step-by-step explanation:
Given data
She borrowed $15 from her mom
Hence she is on -$15
She received $45 dollars
so when she repay $15 her balance will be
= 45-15
=$30
Hence she will save $30
Answer:
B-4=6
Step-by-step explanation:
Your answer would be D. Hope this helps
Answer: The z-score = 2.46
Step-by-step explanation:
Given: sample size : n= 10
Population mean : 
population standard deviation : 
Sample mean : 
Formula to calculate z :
Substitute all values, we get
Hence, the z-score = 2.46
