Step-by-step explanation:
Hey there!
Here,

While working with them remember some rules;
- (-) + (-) = sign (-) but add them.
- (+) + (+) = sign (+) and add.
- (+) - (+) = subtract but keep sign of greator number.
- (-) -(-) = subtract and keep the sign of greator number.
Likewise in your question,



<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
3 times length(l) times width(w) times height(h) over 7. So 3l • w • (h/7)
Answer:
56°
Step-by-step explanation:
hii!
to solve this, we need to know that the angles of a triangle all add up to 180 degrees.
we are going to make an x equation here.
2x+3x+40=180
5x+40=180
-40 -40
5x=140
/5 /5
x=28
angle a is 2x, so the answer would be 28*2 which is 56°
hope this helped out :)
12-y=9
3x-y=21
4y-10=2
1/4xy=6
If you add 5x to 2x+2 you will get 7x+2. You would set this equation equal to 80, so it would be 7x+2=80. When you solve this you will get 11.1428571429, which can be rounded to 11, 11.1, or 11.14, whichever you prefer.