An example will be: Sarah bought 1 pie for her birthday party. She cut it up into 12 slices. During the party she eats 2 of the pie and her Friend Carly eats 1 of the pie. How much pie
12 6
is left? The answer will be 4 = 1 of the cake is left.
12 3
The rectangle is 4 x 5. Area of 20.
The three triangles that are cut off from the rectangle to make QRS have areas of 5, 2, and 6. 13 total cut off.
Subtract 13 from 20.
20 - 13 = 7.
The answer is A, 7. Hope this helps!
Ha I just wanted the points!
While x is the number of small shakes and y is the number of large shakes each size shake you by needs to be multiplied by the cost .... D: 3x+5y=479
Answer:
Equation is: y = 0.5x² + 0.5x - 3
Explanation:
general form of the parabola is:
y = ax² + bx + c
Now, we will need to solve for a, b and c.
To do this, we will simply get points from the graph, substitute in the general equation and solve for the missing coefficients.
First point that we will use is (0,-3).
y = y = ax² + bx + c
-3 = a(0)² + b(0) + c
c = -3
The equation now becomes:
y = ax² + bx - 3
The second point that we will use is (2,0):
y = ax² + bx - 3
0 = a(2)² + b(2) - 3
0 = 4a + 2b -3
4a + 2b = 3
This means that:
2b = 3 - 4a
b = 1.5 - 2a ...........> I
The third point that we will use is (-3,0):
y = ax² + bx - 3
0 = a(-3)² + b(-3) - 3
0 = 9a - 3b - 3
9a - 3b = 3 ...........> II
Substitute with I in II and solve for a as follows:
9a - 3b = 3
9a - 3(1.5 - 2a) = 3
9a - 4.5 + 6a = 3
15a = 7.5
a = 7.5 / 15
a = 0.5
Substitute with the value of a in equation I to get b as follows:
b = 1.5 - 2a
b = 1.5 - 2(0.5)
b = 0.5
Substitute with a and b in the equation as follows:
y = 0.5x² + 0.5x - 3
Hope this helps :)