Answer:
40 seconds
Step-by-step explanation:
9 seconds = 18 feet
x seconds = 80 feet
then cross multiply
(9*80)/18 = x
x = 40
hence time = 40 seconds
Answer:
40 steps
Step-by-step explanation:
c = x+b
to solve for x
subtract b from each side
c-b = x+b-b
c-b = x
Answer: x = c-b
c = x+b
c-b= x therefore, x=c-b
The student is wrong, the correct expression is 9(n + 13).
Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation.
Given the phrase “9 times the sum of a number and 13”
Let, n = the number
Therefore,
The sum of a number and 13 is:
n + 13
9 times the sum of a number and 13” can be written as,
9(n + 13)
Hence, the student is wrong.
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A.
32%
B.
33%
C.
50%
D.
83%