Answer:
Step-by-step explanation:
A
You can solve this using the Quadratic Formula, x =
.
a = 1, b = -12, c = 59
x =
Multiply 4 and 1
x =
Multiply 2 and 1
x =
Multiply -4 and 59
x =
Square 12
x =
Subtract
x =
You can't find the square root of negatives, so factor the -92 out.
x =
You
can find the sqaure of 4, so take that out.
x =
Split the expression into two parts
x =
(+ or -)
The 2 in the numerator and the 2 in the denominator cancel each other out
x =
(+ or -)
Divide 12 by 2
x = 6 (+ or -)
Now, split the solution into the plus and minus parts.
Answer:
Demarcus is right the phone will cost $345
Step-by-step explanation:
15% of 300 = 45
300+45=345
keeping in mind that perpendicular lines have negative reciprocal slopes, let's check for the slope of the equation above
so therefore
so we're really looking for the equation of a line whose slope is 2/3 and passes through (-4 , -3)