Answer:90
Step-by-step explanation:
20+3(7+4)+5+2(7+9)
20+3×11+5+2×16
20+33+5+32
90
vertex form of a parabola
y= a(x-h)^2 +k
y =a(x--3)^2 +2
y = a(x+3)^2 +2
Choice B
Since the sum of the measures of the angles exceed 180 degrees, 90 + 45 + 50 = 185 degrees, these measurements cannot make a triangle.
LETTER B
Answer:
A system of equations that represents the situation is:
3x + 2y = 315..... Equation 1
2x + 4y = 450...... Equation 2
Step-by-step explanation:
Let the number of
Haircuts = x
Hair dyes = y
Hence:
Alexandra finds that she can give:
3 haircuts and 2 hair dyes in 315 minutes.
3x + 2y = 315..... Equation 1
Giving 2 haircuts and 4 hair dyes takes 450 minutes
2x + 4y = 450...... Equation 2
Therefore:
a system of equations that represents the situation is:
3x + 2y = 315..... Equation 1
2x + 4y = 450...... Equation 2
Answer:
B
Step-by-step explanation:
i done been therw this before