Mario is constructing a frame for a 10 in .by 8 in. photo. He wants the frame to be the same width all the way around and the to

Question

Inessa05 [86]

3 years ago

6

Mario is constructing a frame for a 10 in .by 8 in. photo. He wants the frame to be the same width all the way around and the to

tal area of the frame and photo to be 120 square inches. What is the dimension of the frame?

Mathematics

2 answers:

alexgriva [62] · Answer 1 · 2021-12-08T04:52:22+03:00

alexgriva [62]3 years ago

8 0

(10+2x)(8+2x) = 120
4x^2 + 36x + 80 = 120
x^2 + 9x + 20 = 30

x^2 + 9x - 10 = 0

(x+10)(x-1) = 0

x = 1 inch dimension

mixas84 [53] · Answer 2 · 2021-12-08T07:19:11+03:00

mixas84 [53]3 years ago

6 0

<span>(10+2x)(8+2x) = 120

4x^2 + 36x + 80 = 120
x^2 + 9x + 20 = 30
---
x^2 + 9x - 10 = 0
-----
(x+10)(x-1) = 0
---
x = 1 inch
----
Ans: Width of frame = 1 in
</span>