Answer:
1. 3,4,5,6
Because if you were to do 3+4+5+6 Then divide by 4. You get 4.5.
2. -6 + (-4) + (-2) + 2 + 4 + 6
Gets you 0
Step-by-step explanation:
Sorry if this doesn't help.
Answer:
14 questions correct
Step-by-step explanation:
x/20 *100 = 70
so x/ 20 = 70/100(0.7)
x/20 = 0.7
x = 0.7*20
x =14
This is a simple right triangle problem.
a^2 + b^2 = c^2
the hypotenuse (or c) is 9 +x
and a is x
And b is 15
So so we sub in the values
x^2 + (15)^2 = (9+x)^2
x^2 + 225 = x^2 + 18x + 81
144 = 18x
8 = x