Answer:


Step-by-step explanation:

Ignore the A before the ±. It wouldn't let me type it correctly.
x² + 2x - 5 = 0
a = 1
b = 2
c = - 5









Two separate equations




Answer:
A) -7
Step-by-step explanation:
2x + 5y + 30 = 0
Let x = 5/2
Substitute into the equation
2(5/2) +5y +30 =0
5+5y+30=0
Combine like terms
35 +5y =0
Subtract 35 from each side
35-35 +5y = -35
5y=-35
Divide by 5
5y/5=-35/5
y = -7
Answer: 4 people
Step-by-step explanation:
4 times 1/5= 4/5
The 4 goes on top ( numerator ) and the 5 would go on the bottom ( denominator )
Also another way to solve this is to use decimal form.
4 times 0.2 ( 0.2=1/5 )= 0.8
Answer:
c
Step-by-step explanation:
the circle is moving like a clock ( clockwise)
X= -2, so (3x^3)^2 = (3[-2]^3)^2 = (-24)^2 = 576.
[ y^(-2) ]^2 = y^(-4), or 1 / [y^4].
When y=5, we get 1 / [5^4] = 625
Thus, the whole expression reduces to 576 / 625.