Answer:
x=1, −8
Step-by-step explanation:
Use the quadratic formula to find the solutions.
(−b±√b²−4(ac))/2a
Substitute the values a=1 , b=7, and c=−8 into the quadratic formula and solve for x.
(−7±√7²−4⋅(1⋅−8))/2⋅1
Simplify. x=(−7±9)/2
The final answer is the combination of both solutions. x=1,−8
Answer:
Option D: 
Step-by-step explanation:
GIven the following inequality statement:

Start by eliminating the fraction on the right-hand side.
Multiply both sides of the inequality statement by 2:
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2(7x + 6) ≥ -x
Next, distribute 2 into the terms inside the parenthesis:
14x + 12 ≥ -x
Subtract 12 from both sides:
14x + 12 - 12 ≥ -x - 12
14x ≥ -x - 12
Add x to both sides:
14x + x ≥ -x + x - 12
15x ≥ - 12
Divide both sides by 15 to isolate x:

or 
Therefore, the correct answer is <u>Option D</u>: 
Answer:
I think these two are right.
it is a valid sample because money is offered to participants.
it is a valid sample because the first 10 people were selected to participate.
Answer:
10.4
Step-by-step explanation:
If you add all of these up and divide by 5 you get 10.4 which is the average value.
Answer:
Y= -20
Step-by-step explanation:
if y=-5 when x=2 find y when x=8
8 /2 = 4
=> x = 2 * 4 => x = 8 Answer
y = -5 * 4 =>
y= -20