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goldenfox [79]
3 years ago
9

I need help with this question

Mathematics
1 answer:
kifflom [539]3 years ago
6 0

Answer:

(-1,9)

(0,3)

(1,-3)

(5,-27)

Step-by-step explanation:

Plug x values into the equation.

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7. Eduardo has $150 in savings and makes $9.75 per hour. Jennifer has $90 in savings and earns $15.25 for each
Stells [14]

Answer:

  a) 150-90 = h(15.25 -9.75)

  b) 10.91

Step-by-step explanation:

a) Jennifer has 150 -90 = 60 less in savings than Eduardo, but she is earning 15.25 -9.75 = 5.50 more per hour. An equation she can use to figure her hours is ...

  60 = 5.50h . . . . for h hours worked.

In 'raw' form, that might be ...

  150 -90 = (15.25 -9.75)h

__

b) Solving the above equation, we get ...

  60/5.50 = h ≈ 10.90909 ≈ 10.91 . . . hours

4 0
3 years ago
Which number is equivalent to (1/3)^-4<br><br> A.12<br> B.81<br> C.1/12<br> D.1/81
marishachu [46]

Answer:

B

Step-by-step explanation:

(1/3)^-4

=1/[(1/3)^4]

=1/(1/81)

=81

6 0
3 years ago
13. Wind farms are a source of renewable energy found around the world. The power P (in kilowatts) generated by a wind turbine v
suter [353]
Since the Power is directly proportional to the velocity, their ratio \frac{P}{v^{3} } is constant.

<span>Therefore </span>\frac{500}{ 10^{3} } = \frac{x}{ 12^{3} } which is a proportion:

500 : 1000 = x : 1728

that can be easily solved:

x = (500×1728)/1000 = 864kW

8 0
3 years ago
Read 2 more answers
The number 1,134 is divisible by all of the following except
Rasek [7]

Answer:

1,134 is not divisible by 12

5 0
3 years ago
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F(x) = 2x² + x at (-1, 1)
lord [1]

Answer:

f(x) = 2 {x}^{2}  + x \\ at \: that \: point \: given \:  \: x =  - 1 \\ f(x) = 2 {( - 1)}^{2}  + ( - 1) \\ f(x) = 2 - 1 \\ f(x) = 1

4 0
3 years ago
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