Answer:
Antoinette's error
Option A) She distributed incorrectly.
Step-by-step explanation:
We are given the following information in the question:
Antoinette solves the linear equation
![3(x-3)+2x+9 = 2x+ 2(x-1)](https://tex.z-dn.net/?f=3%28x-3%29%2B2x%2B9%20%3D%202x%2B%202%28x-1%29)
Antoinette made mistake in step 1 that is she did not distributed correctly.
If she would have distributed correctly, then she would have got the following solution:
![3(x-3)+2x+9 = 2x+ 2(x-1)\\\text{Step 1: }3x-9+2x+9 = 2x + 2x-2\\\text{Step 2: }5x = 4x -1\\\text{Step 3: }5x-4x = -1\\\text{Step 4: }x = -1](https://tex.z-dn.net/?f=3%28x-3%29%2B2x%2B9%20%3D%202x%2B%202%28x-1%29%5C%5C%5Ctext%7BStep%201%3A%20%7D3x-9%2B2x%2B9%20%3D%202x%20%2B%202x-2%5C%5C%5Ctext%7BStep%202%3A%20%7D5x%20%3D%204x%20-1%5C%5C%5Ctext%7BStep%203%3A%20%7D5x-4x%20%3D%20-1%5C%5C%5Ctext%7BStep%204%3A%20%7Dx%20%3D%20-1)
Substituting x = -1 in the given equation, we gwt:
![3(-1-3)+2(-1)+9 = 2(-1)+ 2(-1-1)\\-12-2+9 = -2-4\\-6=-6\\\text{which is true}](https://tex.z-dn.net/?f=3%28-1-3%29%2B2%28-1%29%2B9%20%3D%202%28-1%29%2B%202%28-1-1%29%5C%5C-12-2%2B9%20%3D%20-2-4%5C%5C-6%3D-6%5C%5C%5Ctext%7Bwhich%20is%20true%7D)
Antoinette's error
Option A) She distributed incorrectly.
<span>1. Which ratios form a proportion?
a. 4/5, 20/25 -----> 4/5, 4/5 Yes
b.8/12, 18/24 -----> 2/3, 3/4 No
c. 1/3, 7/24 ------> 8/24,7/24 No
d. 2/5, 6/16</span> -----> 2/5, 3/8 No
<span>2.Which ratio forms a proportion with 9/15 = 3/5
a.3/6 = 2/3 No
b.2/3 No
c.12/30 = 2/5 No
d. 6/10</span> = 3/5 Yes
<span>3.Which proportion has cross products of 5 x 24 and 8x15?
a. 5/8=15/24 ----> 5 * 24 = 8 * 15 Yes
b.5/24=8/15 ----> 5 * 15 = 8 * 24 No
c.8/24=15/5 ----> 5 * 8 = 15 * 24 No
d. 15/8=5/24
</span>----> 15 * 24 = 5 * 8 No
Answer:
String
2.
4
6
Percussion
5
10
15
Step-by-step explanation:
Answer:
do 7/9*42. then you will get answer