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Artemon [7]
3 years ago
5

Simplify the expression. -2x + -5 + 8x + -4

Mathematics
1 answer:
Oksi-84 [34.3K]3 years ago
7 0

Answer:

  • 6x - 9

Step-by-step explanation:

Simplify by combining the like terms in steps

  • -2x + -5 + 8x + -4 =
  • (8x - 2x) - (5 + 4) =
  • 6x - 9
You might be interested in
A box has a volume of 192 cubic inches, a length that is twice as long as its width, and a height that is 2 inches greater than
Volgvan

Answer:

Length = 8 inches

Width = 4 inches

Height = 6 inches

Step-by-step explanation:

Volume of the box = 192 cubic inches

Volume of a box = length × width × height

Let

Width = x

Length = 2x

Height = x + 2

Volume of a box = length × width × height

192 = 2x * x * (x + 2)

192 = 2x^2 (x + 2)

192 = 2x^3 + 4x^2

Divide through by 2

96 = x^3 + 2x^2

Subtract 96 from both sides

x ^3 + 2x^2 - 96 = 0

Factorise

(x - 4) (x^2 + 6x + 24) = 0

x^2 + 6x + 24 has no real x-value

So,

Divide both sides by (x^2 + 6x + 24).

0 ÷ (x^2 + 6x + 24) = 0

So,

(x - 4) = 0

x = 4

Width = x = 4 inches

Length = 2x

= 2(4)

= 8 inches

Height = x + 2

= 4 + 2

= 6 inches

Check:

Volume of a box = length × width × height

= (8 * 4 * 6) inches

= 192 inches

4 0
3 years ago
You need to Solve 3 math problems
Ad libitum [116K]

The probability of picking a head and a number 4 is 0.25.

<h3>How to calculate the probability?</h3>

Your information is incomplete and the complete information wasn't found. An overview will be given.

A coin has a head and tail and the probability of choosing either is 1/2 or 0.5.

Let the 2 numbers be 1 and 4. The probability of picking either number will be 1/2 or 0.5 as well.

Here, let the probability of picking a head and a number 4 will be:

= 1/2 × 1/2

= 0.5 × 0.5

= 0.25

Learn more about probability on:

brainly.com/question/24756209

#SPJ1

8 0
2 years ago
Identify the domain and range to the following relations and state whether or not the relations are functions. State why or why
Vladimir79 [104]
It’s a function because it passes the vertical line test
6 0
3 years ago
PLEASE HURRY
givi [52]
Point A is the midpoint of CT which means the ratio of CA:CT would be 1:2.
To find CT, you need to find the distance of CA then applies 2 times of the distance to the point C

Xca= Xa-Xc= 1- (-2)= 3
Yca= Ya- Yc= -3 -5= -8

Xt= Xc + 2* Xca= -2 + 2*3= 4
Yt= Yc + 2* Yca= 5 + 2*-8= -11
T(Xt, Yt)= T(4, -11)

The coordinate for point T would be (4, -11)
8 0
3 years ago
If f(x) = -5x +5 and g(x) +3x +8, find g(f(x))
4vir4ik [10]

Answer:

Step-by-step explanation:

g(f(x)) =  g(f(x)) +3(-5x +5 ) +8

= -15x + 15 + 8

= -15x + 23

4 0
3 years ago
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