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finlep [7]
3 years ago
7

Write y=-3(x-7)^2-8 in vertex form

Mathematics
2 answers:
Veronika [31]3 years ago
7 0

It's in the verex form:

f(x)+a(x-h)^2+k\\\\(h,\ k)-vertex

y=-3(x-7)^2-8\\\\(7,\ -8)-vertex

GalinKa [24]3 years ago
4 0
<h2>Answer:</h2>
  • The given equation is already in vertex form.
  • The vertex is located  at (7,-8)
<h2>Step-by-step explanation:</h2>

We Know that a standard form of a quadratic equation is given by:

                  y=ax^2+bx+c

where a,b and c are real numbers

and the vertex form is given by:

                 y=a(x-h)^2+k------------------(1)

where the vertex of the function is at: (h,k)

Here we have the function as:

          y=-3(x-7)^2-8

We observe that the equation matches the equation as in equation (1) ; such that a= - 3, h=7 and k= -8

Hence, the equation is already in vertex form and the vertex is at (7,-8)

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1/3× 21/4-11/2÷22/5?? .btw they are improper fractions​
IceJOKER [234]
<h3>Solution:</h3>

\frac{1}{3}  \times  \frac{21}{4}  -  \frac{11}{2}  \div  \frac{22}{5}  \\  =  \frac{1}{3}  \times  \frac{21}{4}  -  \frac{11}{2}  \times  \frac{5}{22}  \\  =  \frac{1}{3}  \times  \frac{21}{4}  -  \frac{5}{4}  \\  =  \frac{7}{4}  -  \frac{5}{4}  \\  =  \frac{2}{4}  \\  =  \frac{1}{2}

<h3>Answer:</h3>

\frac{1}{2}

4 0
3 years ago
a sidewalk is 5ft wide, 6in deep, and 220 ft long. how many cubic yards of concrete are needed to fill it?
tangare [24]

Answer:

1100/54 yds

Step-by-step explanation:

First convert inches and feet to yards

[3 ft = 1 yd, 12in = 1yd]

5ft = 1 2/3 yds

6in = 1/6 yds

220ft = 73 1/3 yds

Now use the volume formula,

b*w*h = A

[1 2/3] * [1/6] * [73 1/3]

= [5/3] * [1/6] * [220/3]

= [5/18] * [220/3]

= 1100/54 yds

8 0
3 years ago
Plz help me fast!!!
Snezhnost [94]
72 because right number on the top of the bar is six, and 12•6=72
8 0
3 years ago
You use a juice mix to make orange juice. You combine 12 ounces of the mix with 36 ounces of water. What is a unit rate that des
BARSIC [14]
1/3. Just divide 12 by 12 and get 1 and 36 divided by 12 and that’s 3.
8 0
3 years ago
Read 2 more answers
Is f(x)=7(x-1)+8, what is the value of f(11)?
Vlad1618 [11]

Answer:

f(11) = 78

Step-by-step explanation:

f(x) = 7(x-1) + 8

f(11)

this means that the problem wants us to find what the value of this function is when x is 11

x = 11

f(11) = 7(11-1) + 8

=7(10) + 8

= 70 + 8

= 78

7 0
3 years ago
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