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scZoUnD [109]
2 years ago
6

20, 21, 28 acute obtuse right​

Mathematics
1 answer:
vitfil [10]2 years ago
4 0

Answer:

acute

Step-by-step explanation:

less than 90* degrees

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Help me plz idk how
Alika [10]
Hello there,

For problem one 
The mile is an appropriate unit to measure the distance run over a one-week period.

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8 0
3 years ago
4x-y=20 and -2x-2y=10
lara31 [8.8K]

You can use Substitution to solve this problem:


4x-y=20

-y=-4x+20

y=4x-20


Now you have two equations, and you use the first one to substitute into the second one.


y=4x-20     and     -2x-2y=10


-2x-2(4x-20)=10

-2x-8x+40=10

-10x+40=10

-10x=-30

-x=-3

x=3


Now that we have figured out what x is, we can substitute x in to one of the equations to figure out y.


4x-y=20       x=3

4(3)-y=20

12-y=20

-y=8

y=-8



<em><u>So your answer would be x=3 and y=-8</u></em>

6 0
3 years ago
please help me answer this math question 10 points to whoever helps me (the last of my points) thank youuu!!
vfiekz [6]
Any quadrilateral has sum of all angles equal 360⁰.
So,
m∠D+78+91+90=360
m∠D=360-(78+91+90)=101⁰
Answer is A.
3 0
3 years ago
Fill in<br> the missing<br> this equation.<br> parts<br> of<br> the table using<br> 6-8x+13
Allisa [31]

Answer:

use a calculator

Step-by-step explanation:

4 0
3 years ago
Rosa bought d drawings to and art show. After selling 14 of them she had 34 left. Identify the equation that represents this sit
Alexxx [7]

Answer:

14+34=d hope this helps

7 0
3 years ago
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