Answer:
1
Step-by-step explanation:
for the equation of finding y is x - 5 = y
2 - 5 = -3
3 - 5 = -2
4 - 5 = -1
5 - 5 = 0
<u><em>6 - 5 = 1, </em></u> therefore, y is 1
Since no value is given to Eva, we'll call her x. Justin, then, is 7.50+x. That leaves Emma, who would be Justin (7.50+x) -12. If we add them all together we get 63. So our equation is
x + (7.50+x) + (7.50+x)-12 = 63
Combine like terms
x+x+x + 7.50+7.50-12 = 63
3x + 3 = 63
3x = 60
x = 20
Since we said Eva is x then Eva has 20 dollars.
Justin is 7.50 + x so 7.50+20=
$27.50
Emma is Justin - 12 so 27.50-12= $15.50
Let's check our answer...
15.50+27.50+20 = 63
63=63
It checks!
2(30)=60+30=90. thats a right angle which is 90 degrees so the answer is 30
Answer:
Pretty sure it is 18 girls
Step-by-step explanation:
81 girls: 72 boys
72 boys /16 boys = 4.5
81 girls / 4.5= 18 girls
so 18 girls:16 boys
pls mark me brainliest :)
7+4a=55
4a=55-7
4a=48
a=48/4
a=12
