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Answer:
Mrs. Cook has to grade 63 tests.
Step-by-step explanation:
In order to find the answer, first you have to calculate 80% of the number of tests Ms. Morris has:
35*80%= 28
Then, you have to add the number that represents 80% to the number of tests Ms. Morris has to grade:
35+28=63
According to this, the answer is that Mrs. Cook has to grade 63 tests.
Answer: The total length of nine pieces of chain is 121.248 yards.
Explanation:
Since we have given that
Length of each chain = 13 yards, 1 foot, 5 inches
As we know that
On Converting it into larger units, we get 13.472 yards
Now, Number of pieces of chain =9
Length of 9 pieces is given by
Hence, Nine pieces of chain are 121.248 yards long .
Answer:
-9.3n + 8.7
Step-by-step explanation:
Answer:
See below in bold.
Step-by-step explanation:
3/10 + (-1/3)
= 3/10 - 1/3
Convert the fractions to denominator 30:
= 9/30 -10/30
= -1/30.
10. 14 - (-8)
= 14 + 8
= 22.
13. 2/3 - 3/2
The least common denominator is 6 so we have:
= 4/6 - 9/6
= - 5/6.
