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Soloha48 [4]
3 years ago
11

Let f(x) = 5x – 3 and g(x) = -2x + 7. Find f(x) + g(x).

Mathematics
1 answer:
notka56 [123]3 years ago
5 0

f(x) + g(x) = 5x - 3 - 2x + 7

               = 3x + 4

Hope this helps! If you have any questions, feel free to ask.

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In a popular snack mix, the ratio of pretzels to peanuts to cheese sticks is 8 : 5 : 1 by mass. If I have 64 g of pretzels, how
pentagon [3]

Answer:

48 grams

Step-by-step explanation:

pretzels : peanuts : cheese sticks

     8       :      5       :       1

 64 g      :     ? g      :       ? g

grams of peanuts = 5*64 / 8 = 40 g

grams of cheese sticks = 64*1 /8 = 8 g

<u>grams of peanuts and cheese sticks</u> = 40 + 8 = 48 grams

5 0
3 years ago
) Write an expression that is equivalent to 3(7 + x).
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same question how many times...?

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2 years ago
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THIS IS URGENT<br> One meter equals about 39.37 inches. About how many inches are in 3.2 meters?
liubo4ka [24]
The answer is 125.9 hope this helps
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3 years ago
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1. If the domain of a function f(x) is the set {10, 20, 30}. What does the information tell you about f-1(x)?
ziro4ka [17]

PART A (1 in diagram)

Each mapping diagram represents a function because none of the elements in the inputs maps on to two different elements in the outputs.

1. The domain of the given function f(x) is the set {10, 20, 30}.

All we can say about

{f}^{ - 1} (x)

is that, it has a range of {10, 20, 30}.

This is because the domain of a function becomes the range of its inverse function.

2. If the graph of a function f(x) includes the point (3, 0), then the graph of the inverse function ,

{f}^{ - 1} (x)

will contain the point (0,3).

Reason:The point on the graph of the inverse function is obtained by reflecting the corresponding point on the graph of the function in the line y=x. We just have to swap the coordinates.

In simple terms the domain of the function becomes the range of the inverse function and vice versa.

3. If the first term in an arithmetic sequence is 2.

Then we have a=2.

If the twelfth term is 211, then

a + 11d = 211...(1)

Put a=2 into this equation.

2 + 11d = 211

Solve for d.

11d = 211 - 2

11d = 209

d =  \frac{209}{11}  = 19

If

a_n = 135

then

a + (n - 1)d = 135

Substitute a=2 and d=19

2 + (n - 1)19 = 135

19(n - 1) = 133

(n - 1) =  \frac{133}{19}

n - 1 = 7

n = 7 + 1 = 8

Therefore n=8

4 0
3 years ago
a caterpillar stated at point(-2.5 -5.5) on a coordinate plane.She crawled in a straight line through the origin to point (45,y)
iren [92.7K]

Answer:

99

Step-by-step explanation:

Since the caterpillar crawled through the origin, her movement can be described by a straight line equation modeled with the points (-2.5; -5.5) and (0; 0).

The slope of a linear equation is given by:

m=\frac{y-y_0}{x-x_0}\\m=\frac{-5.5-0}{-2.5-0}\\m=2.2

For x = 45, the value of y is:

y= 2.2x\\y= 2.2*45\\y=99

The value of the y-axis is 99.

3 0
2 years ago
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