10y⁵ + 30y³ - 15y =
5y * 2y⁴ + 5y * 6y² + 5y * (-3) =
5y (2y⁴ + 6y² - 3)
-6
This is because when you multiply -3 by 2 you get -6
Answer: 
Step-by-step explanation:
We just multiply the values on the edges like we are finding the area of a square, L * L = area.
4x * 5x = 20x^2
4x * 8 = 32x
3 * 8 = 24
3 * 5x = 15x
Next add the answers together
20x^2 + 47x + 24
The number is 5
x + 4 = 19 - 2x
+2x +2x
3x + 4 = 19
-4 -4
3x = 15
/3 /3
x = 5
Answer:
B
Step-by-step explanation:
50 is half of something like if u give your friend half of your cookie you gave them 50% of it