MATHEMATICS MIDDLE SCHOOL

Which math expression represents the phrase?9 times the sum of a number and 7









A.

9 · n + 7








B.

9 · (n + 7)








C.

9 · (n – 7)








D.

9 · (n · 7)

Answers

Answer 1
Answer: "The sum of a number and 7"
Sum implies addition.
We would write this part as n + 7.

Then we would write the "9 times" part in like this:
9 · (n + 7)
We can't write just 9 · n + 7 without the parentheses, because then we would be multiplying just 9 and n instead of 9 and the sum of n and 7. (order of operations says we must do multiplication first)

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Answers

Answer:

In the first box, the fraction is 1 and 1/4. In the second box, the fraction is 2 and 3/4. In the third box, the fraction is 3 and 3/4.


Step-by-step explanation:

Answer:

In the first box, the fraction is 1 and 1/4. In the second box, the fraction is 2 and 3/4. In the third box, the fraction is 3 and 3/4.

Step-by-step explanation:

Simplify (b^9)^3
A.b^24
B.b^6
C.b^27
D.b^9

Answers

Answer:

C. b^27

Step-by-step explanation:

By the definition of exponents

(b^9)^3=b^9*b^9*b^9

And since for any real numbers r,x, and y

r^x*r^y=r^((x+y))

This makes

(b^9)^3=b^9*b^9*b^9=b^{{9+9+9}}=\boxed{b^(27)}

Which is choice C.

Alternatively, we could use the identity

(r^x)^y=r^(xy)

in which case

(b^9)^3=b^((9*3))= \boxed{b^(27)}

which is the same answer.

Answer:b²⁷

Step-by-step explanation:

a child's pool is 3.8 feet wide 5.5 feet long and 1.2 feet deep how many gallons of water will the pool hold every 1ft is = 7.5 gallons

Answers

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Nine more than half the number n is no more than -8. Find n. Write an inequality and then solve.

Answers

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Answers

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Answers

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