3 years ago

Help me please don’t use me for points

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

6 0

Answer: Question 3: 2x-4

Question 4: -2x+8

Step-by-step explanation:

in the first one you multiply the 2 into each part of the parenthesis

in the second you add all of the ones with the "x" on them and then add both of the 4's together

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Step-by-step explanation:

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2 years ago

two complementary angles have a difference of 36°. Find the measure of each angle. (Complementary angles are angles that add up

ElenaW [278]

Answer:

27°,63°

Step-by-step explanation:

Let the two angles be a and b.

They are complementary, meaning they add up to 90. Thus:

$a+b=90$

And we are told their difference is 36. Therefore:

$a-b=36$

Solve for the system of equations. Add b to both sides in the second equation:

$a=b+36$

Substitute this into the first:

$(b+36)+b=90$

Combine like terms;

$2b+36=90$

Subtract 36:

$2b=54$

Divide by 2:

$b=27$

So, b is 27 degrees.

Use the second equation again:

$a-b=36$

Now that we know b is 27, substitute:

$a-27=36$

Add 27 to both sides:

$a=63$

So, a is 63 degrees.

And we're done :)

4 0

3 years ago

Read 2 more answers