Answer:

Step-by-step explanation:
Distance Formula: 
Step 1: Define endpoint coordinates
(2, 5)
(-6, -1)
Step 2: Substitute and Evaluate





Answer:
T-shirts cost $20; each pair of pants cost $12.
Step-by-step explanation:
x is T-shirts ; y is each pair of pants
(8x+5y=220) -1
(5x+y=112) 5
----------------------
-8-5y=220
25+5y=560
----------------
17x=340
x=20
Distribute the first set of parenthesis
<span><span>15<span>r<span><span>2</span><span></span></span></span>−20r+6r−8</span><span>
Combine like terms
</span><span><span>15<span>r<span><span>2</span><span></span></span></span>+(−20r+6r)−8</span><span>
Simplify your answer
</span><span>15<span>r<span><span>2</span><span></span></span></span>−14r−8
*Answer is </span>15r^2−14r−8*<span><span>
</span></span>
</span></span>
Answer:
x=2,2/3
Step-by-step explanation:
We can use the Сosine formula to solve this problem.
<span>First we must find the third side (АС) of the triangle:
</span>

<span>
The smallest angle of the triangle lies opposite the smallest side, so we need to find m</span>∠C.

Now we can use Bradis's Table (I don't know the name in English, maybe Trigonometric Table?) to find m∠C:
m∠С = 38°42' = 38.7°
Answer: 38.7°
<span>I hope this helps</span>