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3 years ago

PLS HELP!! 1 through 8, if you answer you don’t have to do them all just at least a few pls

Mathematics

2 answers:

GenaCL600 [577]3 years ago

3 0

Answer:

1) 29

2) 64

you can use the explanation below to help find the other 6 problems

Step-by-step explanation:

1) 4(5+6) - 15 = 4 * 11 - 15 = 44 - 15 = 29

2) 8(2+4) + 16 = 8 * 6 + 16 = 48 + 16 = 64

Inessa [10]3 years ago

3 0

Answer:

=29

Step-by-step explanation:

4(5+6)−15 answer is 29

3(14-7)-16 answer is 5

10(6-5)-3(9-6) answer is 1

2(8+3)+4^2 answer is 38

8(2+1)^2-4^2 answer is 56

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Answer:

$a'(d) = \frac{d}{5} + \frac{3}{5}$

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Step-by-step explanation:

Given

$a(d) = 5d - 3$

Solving (a): Write as inverse function

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To do this, we prove that:

$a(a'(d)) = a'(a(d)) = d$

Solving for $a(a'(d))$

$a(a'(d)) = a(\frac{d}{5} + \frac{3}{5})$

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$a(a'(d)) = \frac{5d}{5} + \frac{15}{5} - 3$

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$a(a'(d)) = d$

Solving for: $a'(a(d))$

$a'(a(d)) = a'(5d - 3)$

Substitute 5d - 3 for d in $a'(d) = \frac{d}{5} + \frac{3}{5}$

$a'(a(d)) = \frac{5d - 3}{5} + \frac{3}{5}$

Add fractions

$a'(a(d)) = \frac{5d - 3+3}{5}$

$a'(a(d)) = \frac{5d}{5}$

$a'(a(d)) = d$

Hence:

$a(a'(d)) = a'(a(d)) = d$

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