11y-36= 63° because of the angles theorem.
Answer:
x=25
Step-by-step explanation:
4x-10x=x-175
Move all the x values to one side:
175=x+10x-4x
Simplify:
175=7x
Divide both sides by 7:
25=x
This is the way I do it to find the average.
10 girls times 70 = 700
15 boys times 80= 1200
700+1200=1900 all their scores
1900÷25 (number of boys and girls)=76 or 76%
Answer:
<h2>g = 17</h2>
Step-by-step explanation:
15 less than twice a number g is 19
2g - 15 = 19 <em>add 15 to both sides</em>
2g - 15 + 15 = 19 + 15
2g = 34 <em>divdie both sides by 2</em>
2g : 2 = 34 : 2
g = 17
