Answer:
B
Step-by-step explanation:
Answer:
A sample of the data for the for the total income are as follows;
State, Indiana
Income, Number of families
0, 1
5, 1
10, 1
15, 1
20, 3
25. 4
From the data, we have;
The total income for the families from Indiana = $2,260
The total income for the families from New Jersey = $2,565
The average income for the families from Indiana ≈ $64.57
The average income for the families from New Jersey ≈ $73.29
The median income for the families from Indiana = 0
The median income for the families from New Jersey = $55
The first quartile for the families from Indiana = $0
The first quartile for the families from New Jersey = $0
The third quartile for the families from Indiana = $85
The third quartile for the families from New Jersey = $120
Step-by-step explanation:
Answer:
A=1/2bh
A=1/2(2)(4)
A=1/2(8)
A=4
Step-by-step explanation:
Area is 4units²
Answer: A vertical line from (-5 , 4 ) to (5 , 4)
Step-by-step explanation: The y axis is the vertical one. Go up 4 and draw a line connecting all the points with 4 in the coordinates.
Hope that helps :)
Answer:
f(x) = 4x^2 + 2x - 4.
Step-by-step explanation:
Let the quadratic function be y = f(x) = ax^2 + bx + c.
For the point (-2, 8) ( x = -2 when y = 8) we have:
a(-2)^2 + (-2)b + c = 8
4a - 2b + c = 8 For (0, -4) we have:
0 + 0 + c = -4 so c = -4. For (4, 68) we have:
16a + 4b + c = 68
So we have 2 systems of equations in a and b ( plugging in c = -4):
4a - 2b - 4 = 8
16a + 4b - 4 = 68
4a - 2b = 12
16a + 4b = 72 Multiplying 4a - 2b = 12 by 2 we get:
8a - 4b = 24
Adding the last 2 equations:
24a = 96
a = 4
Now plugging a = 4 and c = -4 in the first equation:
4(4) - 2b - 4 = 8
-2b = 8 - 16 + 4 = -4
b = 2.
