2 years ago

Which decimal is equivalent to 8 9/12 ? A. 8.12 B. 8.75 C. 8.34 D. 8.9

Mathematics

1 answer:

Dmitriy789 [7]2 years ago

4 0

I think that the answer is D

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What is the solution of the system? Use elimination.

denis-greek [22]

Eliminate y's
multiply second equaiton by 4
4x+4y=-4

add to first equation

3x-4y=-24
<u>4x+4y=-4 +</u>
7x+0y=-28

7x=-28
divide both sides by 7
x=-4
sub back

x+y=-1
-4+y=-1
add 4 to both sides
y=3

(x,y)
(-4,3)
D is answer

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I need some help with these problems

Vika [28.1K]

Answer:

calculate by yourself

Step-by-step explanation:

use sin theorem

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