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pochemuha
3 years ago
11

Help me. quick,please. 20 points!!

Mathematics
1 answer:
Westkost [7]3 years ago
5 0

I hope this helps you


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The questions are in the images pls answer all or your answer will be deleted because this is for a lot of points and im losing
PilotLPTM [1.2K]

1)

x + 2y = 21

+ -x + 3y = 29

--------------------------

5y = 50

y = 10

x + 2(10) =21

x = 1

2)

6x + 6y = 30

+ 15x - 6y = 12

-------------------------------

21x = 42

x = 2

6(2) + 6y = 30

6y = 18

y = 3

7 0
3 years ago
What is an equivalent expression of 12+18n+7-14n
Harman [31]
The equivalent expression -

4n + 19
7 0
3 years ago
Read 2 more answers
Estimate the circumference of a circle that has a radius of 11 m.
tensa zangetsu [6.8K]
The answer would be <span>69.12m.</span>
3 0
3 years ago
Please help i don’t understand this
swat32

Similar polygons only differ by a scaling factor. In other words, two polygons are similar if one is the scaled version of the other.

In particular, this implies that the angles are preserved, and the correspondent sides are in proportion.

These two polygons are both rectangles, so the angles are preserved. We must check the sides, and we have to check if the smaller sides are in the same proportion as the bigger sides.

So, the two rectangles are similar if the following is true.

4\div 5 = 11\div 12

In any proportion, the product of the inner terms must be the same as the product of the outer terms:

4\cdot 12 = 5\cdot 11 \iff 48=55

This is clearly false, and thus the two rectangles are not similar.

5 0
3 years ago
What is the sum of all integers between 123 and 2021 which end in 7? Please walk me through it w/ work.
Savatey [412]

Answer:

it will be 35720 . I hope my answer is correct

6 0
3 years ago
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