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Elena-2011 [213]
3 years ago
7

please help!!! ive been trying this question for the pass 20 minutes and cant seem to understand it!!

Mathematics
2 answers:
Lesechka [4]3 years ago
5 0

Answer:

D

Step-by-step explanation:

Beacuse ‍♀️

mestny [16]3 years ago
4 0

Answer:

This is a rectangle, so if AB is equal to 3 centimeters, then DC is equal to 3 centimeters.

Since Angle X is equal to 45 degrees, then angle CDE, is also equal to 45 degrees, and we have an isosceles triangle, since angle  CDE and DEC are equal to each other.

This means, that CE = DC.

And because E is the midpoint of CB, CE = EB.

So basically, we have:

DC = CE = BE

DC = 3

3 = CE = BE

And we see that CE and BE are both equal to 3, which makes CB equal to 6, which makes solving the area easy. (3 x 6), which is 18.

B is correct!

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What is the slope of the line given by the equation y=-1/3x? Entee your answer as an integer or fraction in lowest terms.
Serhud [2]
-1/3

really? it's that easy dude. 

whatever number is next to x, like say, 3x, that number would be the slope, so it would be 3.

hope it helped.

6 0
3 years ago
Calculate the value of the exterior angle
aev [14]

What we know is that the sum of a triangle's internal angles are 180º, and a straight angle makes 180º.

first, we have to find the third internal angle(let's call it n) so that we can use it to find the exterior angle.

(3x + 20) + (4x + 5) + n = 180

simplify:

7x + 25 + n = 180

7x + n = 155

n = 155 - 7x

Now we can add it to the external angle to find x.

(155 - 7x) + (8x + 15) = 180

simplify:

170 + 8x - 7x = 180

170 + x = 180

x = 10

Now we can substitute it to the external angle.

8 x 10 + 15 = 95

the exterior angle is 95º.

8 0
3 years ago
I'll mark u brainliest for the right answer and 15 POINTS!!!
morpeh [17]

The sum of all angles in a regular octagon is 1080 degrees. Because all sides are the same (regular octagon), all of the eight angles are the same too, so we simply divide 1080 by 8 and that is the solution.

1080/8 = 135

8 0
3 years ago
The ordered pair (a,b)satisfies the inequality y<br><br>need a little help​
Ymorist [56]

Answer:

If you add 5 to a, it will be greater than b

Step-by-step explanation:

This is because if you have the inequality y<x+5 a=x b=y so by adding 5 to a meaning x 5+a will still be greater than b(y) with out changing the sign or inequality.

3 0
2 years ago
Sam went to a pizza place with 2 friends. They ordered a large mushroom pizza for $12.60 and a garden salad for $3.30. They also
dusya [7]

Answer:

$4.45

Step-by-step explanation:

there you go bud

6 0
3 years ago
Read 2 more answers
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