3 years ago

What is the solution to the equation 2k-10/-7 = 8?

Mathematics

1 answer:

lubasha [3.4K]3 years ago

4 0

K= 23/7 simplified to 3 2/7

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I am so lost on this question. I’ve never heard of a matrices so I have no clue where to even start to solve this problem.

balu736 [363]

Answer:

thas multiple matrix bro

Step-by-step explanation:

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3 years ago

How do i find the value of x in x+7=2

Shkiper50 [21]

Answer:

x = -5

Step-by-step explanation:

Get x by itself on the left side. To do that, subtract the 7. Do to both sides. This makes x = -5

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3 years ago

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Evaluate the expression y=4. 5+y+8 A)72 B)21 C)17 D)13

Elden [556K]

Answer:

C)17

Step-by-step explanation:

5+y+8

let y=4

5+4+8

9+8

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3 years ago

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Box A contains 2 red and 2 green balls and box B contains 1 red and 2 green balls. A box is selected at random and then a ball i

serious [3.7K]

The answer is 1/2. I think that since the question is about Box B , only boxes will be taken into consideration. Since the total number of boxes are two and box b is one ,the probability of the box being B is 1/2.

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3 years ago

Ho do you get the Surface Area of this shape?

blsea [12.9K]

This solid object contains 8 sides.

The side that is facing you has a surface area:

$64f{ t }^{ 2 }+84f{ t }^{ 2 }=148f{ t }^{ 2 }$

The side exactly opposite this one has the same surface area - 2 sides with this surface area in total.

The bottom side has a surface area:

$84f{ t }^{ 2 }$

The side to your right has a surface area:

$84f{ t }^{ 2 }$

The side to your left has a surface area:

$48f{ t }^{ 2 }$

The side to your top left has a surface area:

$48f{ t }^{ 2 }$

The side beside the side to the top left has a surface area:

$36f{ t }^{ 2 }$

The side at the very top has a surface area:

$36f{ t }^{ 2 }$

Combined, the surface area is:

$S=2\cdot 148f{ t }^{ 2 }+2\cdot 84f{ t }^{ 2 }+2\cdot 48f{ t }^{ 2 }+2\cdot 36f{ t }^{ 2 }$

$\\ \\ =296f{ t }^{ 2 }+168f{ t }^{ 2 }+96f{ t }^{ 2 }+72f{ t }^{ 2 }\\ \\ =632f{ t }^{ 2 }$

Therefore the answer is: C

7 0

3 years ago