Answer:
17
Step-by-step explanation:
Seeing that traingle ABC is = to triangle DEF.
It means that the angles are equal too.
So you would equate them to each other.
Hence 5X+2=87
5X=87-2
5X=85 (divide by 5)
X=17
Hope that helps :)
Answer:
4. x=1/5y+3 5. x=-6/9y+2 6. x=-6/1y+4
Step-by-step explanation:
math and stuff
sorry if I am wrong, I haven't done this ina while and never studyed it much
the probability is 7/15
Step-by-step explanation:
because there are 7 girls and 8 boys
Boys: x
gilrs: y
From the text of the task:

Replacing x:

So there are 28 girs and 20 boys