Answer:
3/2x+2y-7/2
Step-by-step explanation:
Option D. 2(n + 9) is the right answer
Step-by-step explanation:
The word problems are converted into mathematical problems to solve simply.
for the given problem
"two times the sum of a number and 9"
Let n be a number then
when there is and between two things they are performed first then next operation is performed so
the sum of a number and 9

Then
two times the sum of a number and 9

Hence,
Option D. 2(n + 9) is the right answer
Keywords: Mathematical notation
Learn more about mathematical notation at:
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The prism of the surface area is 11200
Answer:
6
Step-by-step explanation:
Answer:
A:870 B:438.82
Step-by-step explanation:
L x W x H
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