3(4)^2 -4(-5) + (4)(2)
= 3(16) + 20 + 8
= 48 + 20 + 8
= 76 (d)
The coordinates of B are (-6,6), using the midpoint concept.
<h3>Midpoint</h3>
The midpoint of two points is given by the mean of the coordinates of these two points.
This is applicable for both the x-coordinate and for the y-coordinate, that is, we have to find the mean of each of the coordinates.
In the context of this problem, we have that:
- The mean of the x-coordinates is of -1.
- One of them is of 4, and the other is of x.
Hence the x-coordinate of B is calculated as follows:
-1 = (4 + x)/2
4 + x = -2
x = -6.
For the y-coordinate, we have that:
- One of them is of 8, and the other is of y.
Thus the y-coordinate of B is calculated as follows:
7 = (8 + y)/2
8 + y = 14
y = 6.
Thus the coordinates are:
B(-6,6).
More can be learned about the midpoint concept at brainly.com/question/25886396
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Answer:
$78
Step-by-step explanation:
Savings = (normal price) – (discounted price)
If the item is 25% off, then the discounted price will be 75% of the original price: .75(239.99) = 179.9925.
Baron also gets 10% off of this price, so the total discounted price will be 90% of the already-discounted price: .9(179.9925) = 161.99325.
= 239.99 - 161.99325
= 77.99675
Rounding up, Baron saves $78 from the original price.
Nina used 2 cups. The correct answer is B. Use this formula;
lets assume y is the amount of ounces she used. Lets assume x is the amount of cups she used.
y = x(8)
Replace y with 16.
16 = x(8)
Divide by 8.
2 = x
Thus, 2 cups.