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sattari [20]
3 years ago
7

PLZ HELP ME! I CAN"T FIGURE THIS OUT! HELP! NO LINKS!

Mathematics
2 answers:
wolverine [178]3 years ago
7 0

Answer:

There's only 1 step. It is the second one, "Multiply 4 by 5 and multiply 4 by 3x"

Step-by-step explanation:

4(5 - 3x) =

4(5) - 4(3x) =

20 - 12x

You can't simplify further, so the second one is the right answer

Hope this helps! :)

balandron [24]3 years ago
4 0
The first step is to multiply 4 by 5 and multiply 4 by 3x!

You should get 20 - 12

Then the 2nd step is to subtract the products :)



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Find the x value 4x-28 9x
andriy [413]

Answer: -5.6

Step-by-step explanation:

Simplifying

(4x + -28) = 9x

Reorder the terms:

(-28 + 4x) = 9x

Remove parenthesis around (-28 + 4x)

-28 + 4x = 9x

Solving

-28 + 4x = 9x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-9x' to each side of the equation.

-28 + 4x + -9x = 9x + -9x

Combine like terms: 4x + -9x = -5x

-28 + -5x = 9x + -9x

Combine like terms: 9x + -9x = 0

-28 + -5x = 0

Add '28' to each side of the equation.

-28 + 28 + -5x = 0 + 28

Combine like terms: -28 + 28 = 0

0 + -5x = 0 + 28

-5x = 0 + 28

Combine like terms: 0 + 28 = 28

-5x = 28

Divide each side by '-5'.

x = -5.6

Simplifying

x = -5.6

5 0
3 years ago
Please help I don’t know how to solve these... can anyone explain? I’m desperate
Elenna [48]

Answer:

1.) 16.5

2.) 24.2 ft

3.) 10.8 ft

Step-by-step explanation:

1.) So first you need to use Heron's formula

S = (A + B + C)/2

So

S = (17 + 17 + 8)/2

S = 21

Now

Area  = \sqrt{S(S - A)(S-B)(S-C)}

So

\sqrt{21(21-17)(21-17)(21-8)}

So the Area is equal to 66.1

Now to find the height we use the Area of the triangle formula

A = 1/2 B*H

66.1 = 1/2(8) * H

66.1 = 4H

H = 16.525

So the height of the triangle is 16.5 units tall

2.) For this question you just use the Pythagorean theorem.

a² + b² = c²

So 22² + 8² = c²

484 + 64 = c²

548 = c²

\sqrt{584} = c

c = 24.1660919472 ft

So the length of the wire is 24.2 ft long

3.) Again this is the Pythagorean theorem.

a² + b² = c²

So 10² + 4² = c²

100 + 16 = c²

116 = c²

\sqrt{116} = c

c = 10.7703296143 ft

So the length of the banner is 10.8 ft long

7 0
3 years ago
4(x-1) + (x+2) + 3(x+1)
dusya [7]

Answer:

8x+1

Step-by-step explanation:

4(x-1) + (x+2) + 3(x+1)

4x-4 + x+2 + 3x+3

combine all x

4x+x+3x= 8x

combine all numbers without variables

(-4) + 2+3=1

8x+1

8 0
3 years ago
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