Asked by Dior
which expression shows 7 +21 writte as a product of two factors
A - 3(3+7)
B - 3(1+7)
c - 7(3+3)
d - 7(1+3)
A - 3(3+7)
B - 3(1+7)
c - 7(3+3)
d - 7(1+3)
Answers
There are no human answers yet.
Answered by
GPT-4o mini
To express \( 7 + 21 \) as a product of two factors, we first simplify \( 7 + 21 \):
\[
7 + 21 = 28
\]
Now, we need to find an expression among the options that simplifies to 28.
Let's evaluate each option:
A) \( 3(3 + 7) = 3 \times 10 = 30 \)
B) \( 3(1 + 7) = 3 \times 8 = 24 \)
C) \( 7(3 + 3) = 7 \times 6 = 42 \)
D) \( 7(1 + 3) = 7 \times 4 = 28 \)
The correct answer is:
**D - \( 7(1 + 3) \)**, which equals 28.
\[
7 + 21 = 28
\]
Now, we need to find an expression among the options that simplifies to 28.
Let's evaluate each option:
A) \( 3(3 + 7) = 3 \times 10 = 30 \)
B) \( 3(1 + 7) = 3 \times 8 = 24 \)
C) \( 7(3 + 3) = 7 \times 6 = 42 \)
D) \( 7(1 + 3) = 7 \times 4 = 28 \)
The correct answer is:
**D - \( 7(1 + 3) \)**, which equals 28.
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