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2 years ago

If a + b = 7 and b=3, what is 4a A. 20b B. 17a C. 16 D.20

Mathematics

2 answers:

Ratling [72]2 years ago

4 0

Answer:

$\huge \colorbox{red}{ \boxed{ \blue{ \sf}{c.16}}}$

Step-by-step explanation:

in this Question, you have to plug the value for b  into a+b=7 in order to find a:

a+b=7
a+3=7
a=4

once you know that a=4, just substitute into 4a:

4×4=16

evablogger [386]2 years ago

3 0

C 16 because a is 4 and 4 times 4 is equal to 16

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