9514 1404 393
Answer:
- to eliminate x: multiply the first by 3, and the second by -4
- to eliminate y: multiply the first by 2, and the second by 5
Step-by-step explanation:
Pick the variable you want to eliminate. Determine the coefficients of that variable in the two equations. Negate one of them. Multiply each equation by the coefficient that came from the other equation.
__
<u>To eliminate x</u>
The x-coefficients are 4 and 3. If we negate 4, then the resulting y-coefficient will be positive. We choose to multiply the first equation by 3, the second by -4.
Here is the result of adding those:
3(4x +5y) -4(3x -2y) = 3(7) -4(-12) ⇒ 23y = 69
<u>To eliminate y</u>
The y-coefficients are 5 and -2. If we negate -2, then the resulting x-coefficient will be positive. We choose to multiply the first equation by 2 and the second by 5.
Here is the result of adding those:
2(4x +5y) +5(3x -2y) = 2(7) +5(-12) ⇒ 23x = -46
The answer is 3s squared over r to the 4th
it should look like a fraction with 3s squared as the numerator (on top) && r to the 4th as the denominator (on bottom)
hope this was helpful, math is my strength so post more if you need help!
–3x^2y^2 • y^4x^<span>3
= -3x^5y^6
hope it helps</span>
So the answer is 27.27% approximately
Part A...Y=9, Part B, m=54 degrees
