X² + 11x - 26 = 0
x² - 25 = 0
(x + 13)(x - 2) = 0
(x + 5)(x - 5) = 0
x = -13
x = 2
x = -5
x = 5
A) 16/40 reduces to 2/5 so 2/5 is correct
b) theoretically you would get heads up 20/40 times which reduces to 1/2
Answer: $18
Step-by-step explanation:
60% of original cost means 40% is taken off
40% = 0.4
30 x 0.4 = 12 so that is how much will be taken off
30-12= 18
$18
Answer:
3/4
Step-by-step explanation:
to add fractions you have to let them have the same denominator or bottom number
so to make 3 and 12 the same number you would multiply 3 by 4
when multiplying the bottom number of a fraction by 4 you multiply the top too
so 2/3 becomes 8/12
then you can add
1/12 + 8/12 is 9/12
at the end you can simplify 9/12 into 3/4 by dividing the equation by 3/3 or both the top and bottom by 3
p(x) = r(x) - c(x)
p(x) = 10x - (4x+15)
10x - 4x = 6x
The answer is C 6x - 15 because the negative is distributed into the positive 15 to make it a negative.
