Answer:
78
Step-by-step explanation:
because my teacher told me
Given:
15% of its height each day
27 inches on day 10.
How tall was it yesterday?
27 represents 115% of the height yesterday. So we divided 27 by 115% to get yesterdays height.
27 ÷ 115% = 23.48 inches.
The plant was 23.48 inches tall yesterday.
To check:
23.48 x 15% = 3.52 inches
23.48 + 3.52 = 27 inches
Answer:
Step-by-step explanation:
distributive
A = L * W........x = W
L = 2x + 3
A = 119
119 = x(2x + 3)
119 = 2x^2 + 3x
2x^2 + 3x - 119 = 0
(2x + 17)(x - 7) = 0
2x + 17 = 0
2x = -17
x = - 17/2 or - 8.5....wont work because it is negative
x - 7 = 0 L = 2x + 3
x = 7 L = 2(7) + 3
L = 14 + 3
L = 17
so the width (x) = 7 inches and the length (L) = 17 inches...
the equation used was : 119 = x(2x + 3)...or 2x^2 + 3x - 119 = 0...not sure which equation they want...but they are the same