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marishachu [46]
2 years ago
12

A little help would be nice

Mathematics
1 answer:
Amiraneli [1.4K]2 years ago
4 0

Answer:

9) -4x+y+6z

10) 8x^2-x-2

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Multiplication is when you times two different numbers together where its negative or postive(you can multiple pretty much anything together)but combining like terms are number or letters thats the same. For instance, say if i have 4x+7-2x+3, i would combine each term that has something in common with it,like, 4x and 2x because both has X and i will combine 7 and 3 because those two are regular numbers and does not have an X like the others. I Hope That helps!
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3 years ago
Find Lateral Surface area
fiasKO [112]

Answer:

To find the lateral surface area, we will find half of the perimeter of the base and multiply it by the slant height of the side triangles. Each triangle has a slant height. The slant height is the height of each triangle, not the height of the pyramid.

Step-by-step explanation:

7 0
3 years ago
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how many pounds of coffee worth $10 a pound should be added to 20 pounds of coffee worth $4 a pound to get a mixture worth $5 a
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Answer:

4

Step-by-step explanation:

1. if the mass of coffee worth $10 is 'x', then its worth is 10x, and the worth of the mixture is 5(x+20);

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5(x+20)=4*20+10*x; ⇒ x=4.

3. the required mass is 4 pounds.

5 0
3 years ago
A closet is 2 feet deep , 5 feet wide , and 7 feet tall what is the valume of the closet in cubic feet , rounded to the nearest
slavikrds [6]

Answer:

70 ft

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3 years ago
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A parallel line has the same gradient

First you will need to rearrange the equation 10x+2y=-2

Then once you do that please comment

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