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ella [17]
3 years ago
11

Solve for x. 4−(2x+4)=5 x=6 x=−52 x=−10 x=32

Mathematics
1 answer:
sashaice [31]3 years ago
5 0

Answer:

Step-by-step explanation:

4−(2x+4)=5

4-2x - 4 =5

-2x = 5

x= -5/2 = -2.5

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A) double a number, then add 3
Alinara [238K]

Answer:

a) 2x+3

b) 5x-7

c) 2x-10

d) 3x/2

Step-by-step explanation:

the number considered is x

8 0
2 years ago
‼️‼️‼️‼️‼️‼️<br> PLEASE HELP <br> FIRST ANSWER GETS BRAINLIEST <br> NO LINK NO LINKS OR BANNED
vodka [1.7K]

Answer:

The true statements are (D) and (E). This is a square with sides equal to 5 units so that means that its perimeter is 4×(5 units) or 20 units and its area is (5 units)×(5 units) or 25 units^2.

5 0
3 years ago
9) Brennen is rock climbing and is 15 feet above ground level. He descends 4 feet,
DanielleElmas [232]

Answer:

15 feet above ground.

Step-by-step explanation:

15 feet - 4 feet = 11 feet

11 feet + 5 feet = 16 feet

16 feet - 1 foot = 15 feet

6 0
3 years ago
Is (x+7) a factor of f(x) x3-3x2+ 2x-8?
Snowcat [4.5K]

Answer:

(x+7) is not a factor

Step-by-step explanation:

we know that

If (x+7) is a factor of f(x)

then

For x=-7, f(-7)=0

Verify

we have

f(x)=x^{3}-3x^{2} +2x-8

Substitute x=-7

f(-7)=(-7)^{3}-3(-7)^{2} +2(-7)-8

f(-7)=-343-147 -14-8

f(-7)=--512

-512\neq 0

therefore

(x+7) is not a factor

3 0
3 years ago
Find the area of a square with a diagonal of 8cm.
klio [65]
You have to use the Pythagorean theorem but there is a little twist here since a square has has equal sides. So:
x^2+x^2=8
2x^2=8
2/2x^2=8/2
x^2=4
√x^2=√4
x=2
The side of the square is 2.
So now the area of a square is:
Side×Side
2×2=4
The area of the square is 4 centimetres
7 0
3 years ago
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