Answer:
the second one
Step-by-step explanation:
29 = 1 * 29
1 + 29 = 30
thus answer is 29
Original height = original width = x mm
1. She made an enlarged copy...
height = 2x
width = 2x
2. She cut off a rectangle...
height = 2x
width =
![\frac{2}{3} *2x= \frac{4}{3}x](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%7D%7B3%7D%20%2A2x%3D%20%5Cfrac%7B4%7D%7B3%7Dx%20%20%20)
3.She doubled the width...
height = 2x
width =
![2*\frac{4}{3}x = \frac{8}{3}x](https://tex.z-dn.net/?f=2%2A%5Cfrac%7B4%7D%7B3%7Dx%20%3D%20%5Cfrac%7B8%7D%7B3%7Dx%20)
height * width = area
![2x * \frac{8}{3}x=139 \ 968 \\ \\ \frac{16}{3}x^2= 139 \ 968 \\\\ x^2=139 \ 968: \frac{16}{3}=139 \ 968 * \frac{3}{16}= 8 \ 748*3 = 26 \ 244 \\ \\ x= \sqrt{26 \ 244} = 162 \ mm](https://tex.z-dn.net/?f=2x%20%2A%20%5Cfrac%7B8%7D%7B3%7Dx%3D139%20%5C%20968%20%20%5C%5C%20%5C%5C%20%5Cfrac%7B16%7D%7B3%7Dx%5E2%3D%20139%20%5C%20968%20%5C%5C%5C%5C%20x%5E2%3D139%20%5C%20968%3A%20%5Cfrac%7B16%7D%7B3%7D%3D139%20%5C%20968%20%2A%20%5Cfrac%7B3%7D%7B16%7D%3D%20%208%20%5C%20748%2A3%20%3D%2026%20%5C%20244%20%5C%5C%20%20%5C%5C%20x%3D%20%5Csqrt%7B26%20%5C%20244%7D%20%3D%20162%20%5C%20mm%20)
Original height was
162 mm
Answer:
x = -8
Step-by-step explanation:
(4 · x) - (4 · 6) + 6 = 6x - 2
4x - 24 + 6 = 6x - 2
4x - 18 = 6x - 2
Isolate x.
4x = 6x - 2 + 18
4x = 6x + 16
4x - 6x = 16
-2x = 16
x = 16 ÷ -2
x = -8
I hope this helps! :)