Answer:
Equation 1: x + 3y = 17
Equation 2: -x + 2y = 8
Add Equation 2 to Equation 1:
x + 3y = 17
<u>+ -x + 2y = 8</u>
5y = 25
Divide both sides by 5:
Answer:
x² + 4xy + 4y²
Step-by-step explanation:
(x + 2y)² = (x + 2y)(x + 2y)
Each term in the second factor is multiplied by each term in the first factor
(x + 2y)(x + 2y)
= x(x + 2y) + 2y(x + 2y) ← distribute both parenthesis
= x² + 2xy + 2xy + 4y² ← collect like terms
= x² + 4xy + 4y²
Answer:
<h2>43.3cm²</h2>
Step-by-step explanation:
Area of a Triangle = Base * Height * 1/2
Base = 5
Height = 4.33
Area of a Triangle = 5 * 4.33 * 1/2
Area of a Triangle = 10.825
There are four triangles.
Surface Area = Area of a Triangle * Number of Triangles
Surface Area = 10.825 * 4
Surface Area = 43.3cm²
The answer is 21.4 ft hope this helps
1. (6,8)
2. (-8,-6)
EXPLANATION:
1. x^2 +(x+2)^2 = 100
> x^2 +(x+2)^2 = 100-1
>> x^2 +2x - 48 = 0
>>> x - 6 = 0 , x + 8 = 0
>>>> x = 6, -8
2. Y = 8,-8
3. Y = 6, -6
(8,6)
(-8, 6)