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3 years ago

IF a= 6 and b= 7, then 4a(3b+5) + 2b =?

Mathematics

2 answers:

Morgarella [4.7K]3 years ago

5 0

The answer is 64 I think

lukranit [14]3 years ago

3 0

Answer:

Step-by-step explanation:

4a(3b+5)+2b

Substitution

4(6)[3(7)+5]+2(7)

Order of operations (PEMDAS)

4(6)[21+5]+2(7)

4(6)+26+2(7)

24+26+14

50+14

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we know that

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$m=\frac{y2-y1}{x2-x1}$

we have

$G(-1,3)\ H(1,2)\ J(-3,-1)$

Step 1

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substitute in the formula

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Step 2

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Step 3

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substitute in the formula

$m=\frac{3+1}{-1+3}$

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$mJG=2$

Step 4

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we know that

if two lines are perpendicular, then the product of their slopes is equal to minus one

$m1*m2=-1$

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The answer in the attached figure

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