Use the zero product property to find the solutions to the equation x2 + x – 30 =12

x = -7, x = 6

Step-by-step explanation:

x² + x - 30 = 12

x² + x - 42 = 0

- 42 = 7*(-6)

7+(-6) = 1

(x+7)(x-6) = 0

x+7 =0, x = -7

x - 6 = 0, x = 6

Se below for the answer

Step-by-step explanation:

A ratio relationship of 2:5 implies that, given to elements a and b, for every 2 amounts of element a there are 5 elements of element b. This will mean that if you have 7 elements, 2 will be a elements and the remaining 5 will be b elements. In terms of percentage, a elements are the (2/7)*100%=29% of the elements and b elements are the remaining 71% percentage. This last statement is another way of saying that there is a 2:5 ratio.