Answer:
After solving the equation we get x=-2 and x= 4 i.e {-2,4}.
Option B is correct.
Step-by-step explanation:
We need to solve
Solving:
Cross multiply
Multiplying:
Now, we have got quadratic equation
Solving this quadratic equation using quadratic formula
We have a=1, b=-2 and c=-8 Putting values
So,after solving the equation we get x=-2 and x= 4 i.e {-2,4}.
Option B is correct.
Answer:
B. 12.96
Step-by-step explanation:First, you need to find 80% of 7.2 which is 5.76. Then, you add 7.2 plus 5.76 and that gives you 12.96.
A ≈ 78.46 ft
To find the answer just look up the formula for finding area with circumference and plug in the circumference
Answer:
Step-by-step explanation:
-x + 2y = 6
y = 1/2x + 3
sub 1/2x + 3 in for y, back into the first equation
-x + 2(1/2x + 3) = 6 ....distribute thru the parenthesis
-x + x + 6 = 6
6 = 6
The solution to this equation is infinite solutions
Answer:
$20
Step-by-step explanation:
2=10
4=20