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Sedaia [141]
4 years ago
13

Given that f(x) = 2x + 5 and g(x) = x − 7, solve for f(g(x)) when x = −3

Mathematics
2 answers:
dusya [7]4 years ago
5 0

Answer:

-15

Step-by-step explanation:

start from the inside and go out.

So first plug in -3 into g(x)

g(-3) = -3 - 7 = -10

then plug in -10 into f(x)

f(-10) = 2(-10) + 5 = -15

so f(g(x)) = -15

Umnica [9.8K]4 years ago
4 0

Answer:

<h3>The answer is - 15</h3>

Step-by-step explanation:

f(x) = 2x + 5

g(x) = x − 7

To find f(g(x)) substitute g(x) into f(x) that's replace every x in f(x) by g(x)

That's

f(g(x)) = 2(x - 7) + 5

= 2x - 14 + 5

f(g(x)) = 2x - 9

When x = - 3

Substitute - 3 into f(g(x))

That's

<h3>f(g(3)) = 2(-3) - 9 = - 6 - 9 = - 15</h3>

Hope this helps you

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A Pizza factory has come out with two kinds of pizzas.A square pizza of side 26 cm costs AED 80 and a circular pizza of diameter
DiKsa [7]

Answer:

Square pizza

Step-by-step explanation:

To obtain which pizza is the best buy:

Cost of square pizza :

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A = 26² = 676 cm²

1 AED of square pizza gives : 676 / 80 = 8.45 cm²

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Radius, r = 28cm

Area of circle, A = πr²

A = 22/7 * 14 * 14 = 22 * 2 * 14 = 616 cm²

1 AED of circular pizza gives : 616 / 80 = 7.7cm²

Hence, square pizza is the better buy ;

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4 0
3 years ago
A loaf of bread costs $0.90. Each loaf has 15 slices. How much does each slice of bread cost?
scoray [572]

Answer:

Each slice of bread costs $0.06.

Step-by-step explanation:

To find how much each slice of bread costs, you need to divide the cost (0.90) by how many slices there are (15). When you divide the two, you get 0.06. To check your answer you can do 0.06x15 and that will equal $0.90.

8 0
3 years ago
Read 2 more answers
What is the equation of the line that passes through (-2, 2) and (1, -4)?
poizon [28]

Answer:

y = - 2x - 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

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Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

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m = \frac{-4-2}{1+2} = \frac{-6}{3} = - 2, thus

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Using (- 2, 2), then

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3 0
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Answer:

set the equations equal to each other, the equations are equal. then find value of x

Step-by-step explanation:

5x+17=3x-4

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5 0
3 years ago
The data in the table represent the training times (in seconds) for Adam. Adam 103 105 104 106 100 98 92 91 97 101 Points Concep
Julli [10]

Answer:

A. Miguel has the greatest spread.

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