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monitta
3 years ago
8

What is the vertex of g(x)=8x^2-64x

Mathematics
2 answers:
Mama L [17]3 years ago
8 0
<span>The (x,y) point of the vertex is usually labelled as:
Vertex = (h, k)
h = -b /  2a
h = --64 / 2*8
h = 64 / 16
</span><span>h = 4

</span>
<span>To get “k”, input the “h” value into the equation.
<span>k = 8*(4^2) -64*4
</span> <span>k = 8*(4^2) -64*4
</span><span>k = 128 -256
</span><span>k = -128
</span></span><span>Vertex = (4, -128)

</span>
Shkiper50 [21]3 years ago
5 0

Answer:

Vertex = (4, -128)

Step-by-step explanation:

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-7.4r - 6.31 = 3.23 - 5.6r
nikdorinn [45]

Answer:

r=−5.3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−7.4r−6.31=3.23−5.6r

−7.4r+−6.31=3.23+−5.6r

−7.4r−6.31=−5.6r+3.23

Step 2: Add 5.6r to both sides.

−7.4r−6.31+5.6r=−5.6r+3.23+5.6r

−1.8r−6.31=3.23

Step 3: Add 6.31 to both sides.

−1.8r−6.31+6.31=3.23+6.31

−1.8r=9.54

Step 4: Divide both sides by -1.8.

−1.8r/−1.8=9.54/−1.8

r=−5.3

4 0
3 years ago
What value of A in this equation y=(9A-7)x would give a line with the slope -5?
Rainbow [258]

0, I put y=(0-7)x into a graphing calculator

5 0
3 years ago
What is 90% of 50? Someone please help. I have to write this for my question to get a good answer.
irina1246 [14]
45÷50=90%
if that is what you are looking for
8 0
3 years ago
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A piece of rope 20 feet long is cut from a longer piece that is at least 32 feet long. The remainder is cut into four pieces of
algol13

Answer:

smaller pieces must be larger than 3 feet

Step-by-step explanation:

x is the longer piece

x>32

x-20>12

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smaller pieces resembled as y

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5 0
4 years ago
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Roger wants to carpet a rectangular room with length of 8 3/4 feet and a width of 9 1/3 feet. If he has 85 square feet of carpet
Dima020 [189]

Answer:

12.66 ft^2

Step-by-step explanation:

Given the dimensions of the room are 8\frac{3}{4}=\frac{31}{4} and 9\frac{1}{3}=\frac{28}{3}.

The area of the room =length*width

Area=\frac{31}{4} *\frac{28}{3}

Area=72.33 ft^2

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The area of carpet left= Total area of carpet - the area of the room

The area of carpet left= 85-72.33=12.66 ft^2

7 0
3 years ago
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