First, it's a percent increase
72/24=3
3-1=2
2*100%=200% increase
Answer:
x=25.63
Step-by-step explanation:
turn p into 1000.
1000= -2x^2+70x+520
Subtract 520 from both sides
1000-520= 480
480= -2x^2+70x
Apply the quadratic formula, and x=25.63
So you have to charge at least $25.63
This figure is four congruent triangles, so we just need to find the area of one, then multiply it by 4.
The area of a triangle is (1/2)bh where <em>b</em> is the base length and <em>h</em> is the height. In this case, b=21 and h=16
A = (1/2)bh
(1/2)·21·16
(1/2)·336
168 ← This is the area of one triangle, so then we multiply it by four:
4 · 168 = 672 in²
Answer: 11/30
Step-by-step explanation:
11 girls out of 30 kids. 11/30 cannot be simplified.