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Tju [1.3M]
4 years ago
13

Plz help me with this

Mathematics
1 answer:
Marrrta [24]4 years ago
4 0

Answer:  c) 3

<u>Step-by-step explanation:</u>

Plug in y = -9 and the given x-value to see if it makes a true statement.

a) -4.5 falls in the piecewise function x < -3  --> y = -x

y = -x

-9 = -(-4.5)

-9 = 4.5    FALSE

b) -3 falls in the piecewise function -3 ≤ x ≤ -2  --> y = 2x

y = 2x

-9 = 2(-3)

-9 = -6    FALSE

c) 3 falls in the piecewise function x > -2 --> y = -x²

y = -x²

-9 = -(-3)²

-9 = -9   TRUE

d) 9 falls in the piecewise function x > -2 --> y = -x²

y = -x²

-9 = -(9)²

-9 = -81   FALSE

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If cos(3x)=sin(x+18degrees) what is the value of x
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Try this option:

1. rule: cosα=sin(90°-α), it means that cos 3x=sin(90°-3x);
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4 years ago
Guillermo saved 25% of his paycheck was 1,000. How much money did Guillermo save?
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Answer:

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Step-by-step explanation:

we have

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1) 50%

we know that

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2) 2/25

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4) 0.31

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