Answer:
-3x^{4} + 19x^{3} - 38x^{2} + 25x - 3
Step-by-step explanation:
1) distribute x² into (-3x² + 7x - 1) to get: -3x^{4} + 7x³ - x²
2) distribute -4x into (-3x² + 7x - 1) to get: 12x³ - 28x + 4x
3) distribute 3 into (-3x² + 7x - 1) to get: -9x² + 21x - 3
4) combine all the answers together into one equation:
-3x^{4} + 7x³ - x² + 12x³ - 28x² + 4x - 9x² + 21x - 3
5) combine like terms:
7x³ + 12x³ = 19x³
-x² + -28x² + -9x² = -38x²
4x + 21x = 25x
6) combine answers together into one equation:
-3x^{4} + 19x³ - 38x² + 25x - 3
Answer:
565.24
Step-by-step explanation:
1056.24-459-32=565.24
First, convert 2/5 to a decimal by dividing 2 by 5:
2/5 = 0.4
Now, multiply:
0.4 x 8.75 = 3.5 gallons
Hope this helps!
Answer:
Step-by-step explanation:
Let the numbers are x and y.
<u>Then the equations are:</u>
- x + y = 10 (blue line)
- x - y = 2 (red line)
<u>The graph are attached with the intersection marked: </u>
