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kobusy [5.1K]
2 years ago
15

If f(x) = x3 + x – 3 and g(x) = x2 + 2x, then what is (f + g)(x)?

Mathematics
1 answer:
olasank [31]2 years ago
8 0

Answer:

x^3+3x−3+x^2

Step-by-step explanation:

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What are 2 binomials that are factors of this trinomial? x^2-x-20
S_A_V [24]

Answer:

(x-5) (x+4)

Step-by-step explanation:

x^2-x-20

What two terms multiply to -20 and add to -1

-5*4 = -20

-5+4 = -1

(x-5) (x+4)

8 0
3 years ago
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Two planes left simultaneously from the same airport and headed in the same direction towards another airport 3600 km away. The
Wewaii [24]

answer:133.3km

Step-by-step explanation:

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3 years ago
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The entrance hall in Black's family house has a perimeter of 71 2/3 ft.IF it is 9 2/5 ft wide, how long is it?
serious [3.7K]

Answer: 26 13/30 feet

Step-by-step explanation:

The hall is in the shape of a rectangle. The perimeter of a rectangle is:

= 2(length + width)

= 2l + 2w

Since perimeter = 71 2/3 ft and Width = 9 2/5 ft wide, the length will be calculated thus:

Perimeter = 2l + 2w

71⅔ = 2l + 2(9 2/5)

71 2/3 = 2l + (2 × 47/5)

71 2/3 = 2l + 94/5

71 2/3 = 2l + 18 4/5

Collect like terms

2l = 71 2/3 - 18 4/5

2l = 71 10/15 - 18 12/15

2l = 52 13/15

l = (52 13/15 ÷ 2)

l = 793/15 × 1/2

l = 793/30

l = 26 13/30

Therefore, the length is 26 13/30ft

3 0
3 years ago
Hi help rn plss<br> this is a system of equations question
otez555 [7]

Answer:

x=6, y=2

Step-by-step explanation:

8 0
3 years ago
The graph below shows a line segment MN: graph of line MN going through ordered pairs negative 2, 3 and 1, negative 3 Which of t
Katyanochek1 [597]
The line segment goes through (-2,3) and (1,-3).

The slope of the line is
\frac{-3-3}{1-(-2)} = \frac{-6}{3} =-2

Therefore the equation of the line segment is of the form
y = -2x + b

Because the line segments goes through (-2,3), therefore
-2(-2) + b = 3
4 + b = 3
b = -1

Answer: The equation is y = -2x - 1
8 0
3 years ago
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