7. 539 is the answer of number 7
8. The answer might be 53 maybe on number 8
Not sure of my answer but, velocity=delta d/delta t. t=delta d/ velocity
—> t=(13-3)/15=>10/15=2/3s
Answer:
Pov:شما به ترجمه گوگل رفت برای دیدن آنچه من گفتم و دیدم این xD
Step-by-step explanation:
Pov:شما به ترجمه گوگل رفت برای دیدن آنچه من گفتم و دیدم این xD
Answer:
13 in
Step-by-step explanation:
let w be width then length is w + 6
the area (A) of a rectangle is calculated as
A = length × width , then
A = w(w + 6) = 91 , that is
w² + 6w = 91 ( subtract 91 from both sides )
w² + 6w - 91 = 0 ← in standard quadratic form
(w + 13)(w - 7) = 0 ← in factored form
equate each factor to zero and solve for w
w + 13 = 0 ⇒ w = - 13
w - 7 = 0 ⇒ w = 7
however, w > 0 then w = 7
and length = w + 6 = 7 + 6 = 13 in
