Answer:
The correct answer is B.
Step-by-step explanation:
In order to find this, calculate out the discriminant for each of the following equations. If the discriminant is a perfect square, then it can be factored.
Discriminant = b^2 - 4ac
The only of the equations that does not yield a perfect square is B. The work for it is done below for you.
Discriminant = b^2 - 4ac
Discriminant = 7^2 - 4(2)(-5)
Discriminant = 49 + 40
Discriminant = 89
Since 89 is not a perfect square, we cannot factor this.
Answer:
He has 3 $20 and 3 $5
Step-by-step explanation:
20 x 3 = $60
5 x 3 = $15
15 + 60 = $75
Answer:
6
Step-by-step explanation:
First, multiply both sides by 3.
Next, combine like terms.
Solve for x.
D. graph D
Explanation
Step 1
graph the function as a line
convert
to graph, find 2 coordianates
a) when x=0
b) when
x=-4
now, using two points draw a line
Step 2
we are looking fro values under this line, so the answer is
D. graph D
Answer:
slope = - 5
Step-by-step explanation:
given the equation of a line in the form
y = mx ← m is the slope
y = - 5x is in this form with slope m = - 5
