Answer:
A___B___C
AC = AB+ BC
3x +12 = ( 14) + (3-2x)
3x + 12 = – 2x + 17
3x + 2x = 17 - 12
5x = 5
x=5/5
x = 1
AC = 3x + 12 = 3(1) + 12 = 3 + 12= 15
I hope I helped you^_^
Answer:
Right triangle.
Step-by-step explanation:
We are asked to determine whether the given side lengths are sides of a right triangle or not.
We know that side lengths of a right triangle are Pythagoras triplets. The square of the longest must be equal to sum of squares of other sides.
Let us check sides of our given triangle.



Since both sides of equation are equal, therefore, the given side lengths are sides of a right triangle.
<h2>Figure 1</h2>
Answer: 350
Formula: W × H × L
7 × 5 × 10 = 350
<h2>Figure 2</h2>
Answer: 288
Formula: 

<h2>Figure 3</h2>
Answer: 14.7
Formula: 

<h2>Figure 4</h2>
Answer: 4.29
Formula: W × H × L
2.6 × 1.5 × 1.1 = 4.29
<h2>Figure 5</h2>
Answer: 60
Formula: W × H × L
4 × 3 × 5 = 60
<h2>Figure 6</h2>
Answer: 27.2
Formula: 

<h2>Figure 7</h2>
Answer: 
Formula: L × W × H

<h2>Figure 8</h2>
Answer: 86.4
Formula: 

Explanation: To find the volume for a rectangular prism, multiply the Length, Width and Height. To find the volume for a triangular prism, multiply the Base, Height and Length by 1/2.
Answer:
1. -8+3x
2. 51x-2+4x2 (squared)
3. 66x +324
4. 6x+2
5. 13 +13x
Step-by-step explanation:
I don't think I really understand the question but I tried to simplify the equations
Plug 1 in for x to get 7y=3(1)-7
7y=-4
y=-4/7