Answer: 3x4 - 13x3 + 28x2 - 23x + 10
Step-by-step explanation:
(3x2 - 4x + 5)(x2 - 3x + 2)
(3x4 - 9x3 + 6x2)
+ (-4x3 + 12x2 - 8x)
(10x2 - 15x + 10)
3x4 - 13x3 + 28x2 - 23x + 10
Answer:
the 4th statement
Step-by-step explanation:
Answer: The mean is greater than the median
when finding the mean then add the numbers then divide them by the amount of numbers there are when finding the median find the middle number and if there is no middle number divide the 2 and that should be your mean
Answer:
Each goal gives 5 points and a penalty costs 7 points.
Step-by-step explanation:
Let a penalty cost = x points
And a goal gives = y points
Ben makes 7 goals and 2 penalties ending the game with 21 points,
7y - 2x = 21 --------(1)
Alyssa makes 10 goals and 8 penalties ending the game with (-6) points,
10y - 8x = -6
5y - 4x = -3 --------(2)
Equation (1) multiplied by 2, then subtracted from equation (2),
(5y - 4x) - 2(7y - 2x) = -3 - 2(21)
5y - 4x - 14y + 4x = -3 - 42
-9y = -45
y = 5
From equation (1)
7(5) - 2x = 21
35 - 2x = 21
2x = 35 - 21
2x = 14
x = 7
Therefore, each goal gives 5 points and a penalty costs 7 points.
