Answer:
B
Step-by-step explanation:
Answer:
27
Step-by-step explanation:
15.75/0.60=26.25
if we round it up, Erin needs to sell 27 cookies
6x^2 + 23x - 4 = 0
factorising:-
(6x - 1)(x + 4 ) = 0
x = 1/6 , - 4
Answer: 
Step-by-step explanation:
In this case we know that the legs of the given right triangle have these lenghts:
and 
By definition, the sides of a right triangle are in the ratio 
Since:

We can multiply the lenght
by 1.25 in order to find the lenght of the hypotenuse of the right triangle:

Since the perimeter of a triangle is the sum of the lenghts of its sides, we can write the following expression for the perimeter of the given right triangle:

Simplifying, we get:

1.) expand
3x - 15 - 5x = 25 + 6x
2.) simplify
-2x - 15 = 25 + 6x
3.) add 2x to both sides
-15 = 25 + 6x + 2x
4.) simplify
-15 = 25 + 8x
5.) subtract 25 from both sides
-15 - 25 = 8x
6.) simplify -15 - 25 to -40
-40 = 8x
7.) divide both sides by 8
-40/8 = x
8.) x = -5