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KonstantinChe [14]
3 years ago
7

-8(2z - 70) use z = 5 and c = 2

Mathematics
2 answers:
Dima020 [189]3 years ago
8 0

Answer:

480

Step-by-step explanation:

-8( 2(5) - 70)

-8 ( 10 - 70)

-80 + 560

480

Neporo4naja [7]3 years ago
6 0

Answer:

480

Step-by-step explanation:

So we have the expression:

-8(2z-70)

And we want to evaluate it for z=5 and c=2:

So:

=-8(2(5)-70)

Multiply within the parentheses:

=-8(10-70)

Subtract within the parentheses:

=-8(-60)

Multiply:

=480

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Answer:

in steps

Step-by-step explanation:

The question did not state if alpha>beta or alpha<beta, so the answer will have 2 answers  for each questions

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   = ((9 + √57) / 6) ((9 - √57) / 6) (1 + (9 ± √57))  

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   = (24/36) (10 ± √57)

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if a is beta

((9 - √57) / 6) - ((9 + √57) / 6)) + ((9 - √57) / 6) ((9 + √57) / 6))  

    = - √57/3 + 2/3

     = - (√57 + 2) / 3

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