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iren [92.7K]
3 years ago
13

Distribute: -3 (2x-4)

Mathematics
2 answers:
kari74 [83]3 years ago
8 0
-6x+12 because you are multiplying -3 and 2x and -3 and -4
jeka943 years ago
7 0

Answer:

24

Step-by-step explanation:

2x-4= -8×-3= 24

When you look at the P.E.M.D.A.S. method you have to do what's in the PERENTESSE first so that means 2x-4 is the first thing that I are solving and you get -8 now you have to multiply -8 by -3 then you get 24

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Mandy needs to paint all the faces and the base of a model pyramid she made for her history project. The dimensions of the pyram
Maurinko [17]

Hello,

The correct answer is B) 280 in²

= 10( 2 × 9 + 10 )

= 10 (2 × 9 = 18 + 10 = 28)

= 10 × 28 = 280

= 280

Answer: 280 in²

In other words.....

= 10(2*9+10)

= 10(18+10)

= 10*28

= 280

Answer: 280 in²

Hope this helps!!!! (:


7 0
3 years ago
A NASA mathematician used a system of equations to determine the point in space where a satellite crossed paths with a massive p
nikitadnepr [17]

Answer:

Option D.

3 equations with 3 variables

Step-by-step explanation:

The coordinates of a point in space must necessarily have 3 components. One to describe the distance on the x axis, another to describe the distance on the y axis to the point, and a third to describe the distance on the z axis.

If we have three variables, then 3 equations are needed to solve the system. With less than 3 equations it would be impossible to solver the system.

Therefore the correct answer is option D.

3 equations with 3 variables

8 0
3 years ago
Find the product.<br><br> (−x−3)(2x2+5x+8)=
harina [27]

( - x - 3)(2 {x}^{2}  + 5x + 8) =  \\  =  - 2 {x}^{3}  - 5 {x}^{2}  - 8x - 6 {x}^{2}  - 15x - 24 =  \\  =  - 2 {x}^{3}  - 11 {x}^{2}  - 23x - 24

3 0
3 years ago
Which expressions<br> are equivalent to 90¹⁶
tangare [24]

Answer:

-30(3+2w)

 (-9-6w) ⋅ 10

 −20(4.5 + 3w)

Step-by-step explanation:

4 0
3 years ago
The length of a side of an equilateral triangle is 40cm. what is the length of the altitude of the triangle?
podryga [215]

Answer:

20√3 cm

Step-by-step explanation:

Altitude of an equilateral triangle splits it into 2 equal right triangles, it bisects the base and the angle opposite to the base.

<u>Let the altitude be x. Then as per Pythagorean theorem:</u>

  • x² = 40² - (40/2)²
  • x²= 1600 -400
  • x²= 1200
  • x= √1200
  • x= 20√3 cm

<u>Correct choice is</u> the second one

4 0
3 years ago
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