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Margarita [4]
3 years ago
15

Find the inverse of the function f(x) = 2x – 4.

Mathematics
1 answer:
podryga [215]3 years ago
8 0
F(x) = 2x - 4
y = 2x - 4
x = 2y - 4
x + 4 = 2y
(x + 4)/2 = y
y = (x + 4)/2
f^-1(x) = (x + 4)/2
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Marie will earn $15 per hour at a new job. During training, she will earn $10 per hour. What percent of Marie’s regular hourly r
Hitman42 [59]

Answer: 66.67%

Step-by-step explanation:

Given: The amount Marie will earn at a new job = $15 per hour

The amount she will earn during the training = $10 per hour

The percent of Marie’s regular hourly rate she will earn during training is given by :-

P=\frac{\text{Rate of amount she earn in training }}{\text{Rate of amount she earn at new job }}\times100\\\\\Rightarrow\ P=\frac{10}{15}\times100\\\\\Rightarrow\ P=66.66666\%\approx66.67\%

4 0
3 years ago
Find the area of the trapezoid with bases 8 cm and 4 cm and a height of 1/4 cm. (Simplify your answer)
Simora [160]

Answer:

1 1/2 or 1.5

Step-by-step explanation:

trapezoid area formula: a = (a+b/2) x h

bases: 8 + 4 = 12

12/2=6

6 x 1/4 = 1.5 or 1 1/2

4 0
2 years ago
Come help a sister out on 2 geometry questions please
PSYCHO15rus [73]
1- question

Data:
width = 6 cm
length = 5 cm
height = 8 cm


<span>First we will find the area of ​​the base that is square, we have:
</span>
Ab = 6 * 5 
Ab = 30 cm²

<span>Now we will calculate the volume of a square pyramid, we have:
</span>Formula: V =  \frac{1}{3}  A_{b}  *h

Solving:
V = \frac{1}{3} A_{b} *h
V =  \frac{1}{3}*30*8
V =  \frac{240}{3}
\boxed{\boxed{V = 80\:cm^3}}\end{array}}\qquad\quad\checkmark

Answer:
D) 80 cm³

2- question:

Data:
width = 7 in
length = 7 in
height = 9 in


First we will find the area of ​​the base that is square, we have:

Ab = 7 * 7 
Ab = 49 in²

Now we will calculate the volume of a square pyramid, we have:
Formula: V = \frac{1}{3} A_{b} *h

Solving:
V = \frac{1}{3} A_{b} *h
V = \frac{1}{3}*49*9
V = \frac{441}{3}
\boxed{\boxed{V = 147\:in^3}}\end{array}}\qquad\quad\checkmark

Answer: 
C) 147 in³

3 0
3 years ago
Three Numbers are in the ratio of 2:3:7. What is the largest number if the sum is 288
lord [1]

Answer:

2x + 3x + 7x = 288

12x = 288

x = 24

The largest number is therefore 7 * 24 = 168

Step-by-step explanation:

4 0
2 years ago
D. 2/5 (j + 40) = -4
Shkiper50 [21]

Answer:

-50

i have made it in the above picture

hope it helps

7 0
2 years ago
Read 2 more answers
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