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4 years ago

Simplify the expression k-2(k-(2-k))-2

Mathematics

2 answers:

notka56 [123]4 years ago

6 0

K-2(k-(2-k))-2
=k-2(2k-2)-2
=k-4k+4-2
=2-3k

Reil [10]4 years ago

3 0

Simplify the following:
k - 2 (k - (2 - k)) - 2
-(2 - k) = k - 2:
k - 2 (k + k - 2) - 2
Grouping like terms, k + k - 2 = (k + k) - 2:
k - 2 ((k + k) - 2) - 2
k + k = 2 k:
k - 2 (2 k - 2) - 2
-2 (2 k - 2) = 4 - 4 k:
k + 4 - 4 k - 2
Grouping like terms, k - 4 k - 2 + 4 = (4 - 2) + (k - 4 k):
(4 - 2) + (k - 4 k)
k - 4 k = -3 k:
-3 k + (4 - 2)
4 - 2 = 2:
Answer: 2 - 3 k

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3 years ago

PLEASE HELP WILL MARK BRAINLIEST THANK YOUUUU

alina1380 [7]

Hi!

<h3>Your answer is the first option, 0.17.</h3>

To solve this, we will have to do a few things.

Solve for the area of the triangle
Solve for the area of the rectangle
Find what percent the area of the triangle is of the area of the rectangle

<u>Area of a triangle:</u> $area=\cfrac{base*height}{2}$

Use the given values to plug it into the formula:

$area=\cfrac{4*6}{2}$

$area=\frac{24}{2}$

$area=12$

The area of the triangle is 12 centimeters squared.

<u>Area of a rectangle:</u> $area=length*width$

Use the given values to plug it into the formula:

$area=10*7$

$area=70$

The area of the rectangle is 70 centimeters squared.

<h3><u>STEP THREE</u></h3><h3 />

To do this step, we must divide the area of the triangle by the area of the rectangle.

This will give us the percent that the triangle is of the rectangle, and hence will give us the probability of it landing inside of the rectangle.

So:

$12/70=0.17$

<em>Therefore, the probability that a point chosen randomly inside the rectangle is in the triangle is 0.17.</em>

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Hi! I need some help with this (:

Arlecino [84]

Answer:

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hope this helps

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ZanzabumX [31]

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4 years ago

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