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inysia [295]
4 years ago
13

Pls answer quick i need it lol ok ty

Mathematics
1 answer:
svp [43]4 years ago
4 0

Answer:

the answer would probrally be C or D

Step-by-step explanation:

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What is the axis of symmetry for the graph of y – 4x = 7 – x2
eimsori [14]

we know that

The equation in vertex form of a vertical parabola is equal to

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

where

(h,k) is the vertex of the parabola

and the axis of symmetry is equal to the x-coordinate of the vertex

so

x=h -----> equation of the axis of symmetry

In this problem we have

y-4x=7-x^{2}

Convert to vertex form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

y-7=-x^{2}+4x

y-7=-(x^{2}-4x)

Complete the square. Remember to balance the equation by adding the same constants to each side

y-7-4=-(x^{2}-4x+4)

y-11=-(x^{2}-4x+4)

Rewrite as perfect squares

y-11=-(x-2)^{2}  

y=-(x-2)^{2}+11  

the vertex is the point (2,11)

therefore

<u>the answer is</u>

The axis of symmetry is

x=2

see the attached figure to better understand the problem

5 0
4 years ago
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At the beginning of the season, MacDonald had to remove 5 orange trees from his farm. Each of the remaining trees produced 210 o
Paul [167]
There were 199 trees that produced the harvest. 5 trees would produce 1050 oranges.
8 0
3 years ago
Please... I need help with this
storchak [24]
Selling tickets to the play would raise more money due to the fact that each ticket costs more money than the tickets in the table next to the problem. The tickets in the table cost $5, which is less than $6.25.
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3 years ago
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Find the area of the curve y= f(x) = x between x = 5 and x = 10
Tems11 [23]

Answer:

the area of the curve y= f(x) = x between x = 5 and x = 10

A=\frac{75}{2}

Step-by-step explanation:

  • Finding the area of the curve  y = f(x) = x between x = 5 and x = 10

Using the Area formula

A=\int _a^b\:f\left(x\right)dx

As the area of curve lies between x = 5 and x = 10

so

  • a = 5, b = 10

so the integral expression becomes

A=\int _5^{10}xdx

\mathrm{Apply\:the\:Power\:Rule}:\quad \int x^adx=\frac{x^{a+1}}{a+1},\:\quad \:a\ne -1

A=\left[\frac{x^{1+1}}{1+1}\right]^{10}_5

    =\left[\frac{x^2}{2}\right]^{10}_5

     =\frac{1}{2}\left[10^2-5^2\right]

     =\frac{1}{2}\cdot \:75

     =\frac{75}{2}

Therefore, area of the curve y= f(x) = x between x = 5 and x = 10

A=\frac{75}{2}

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3 years ago
Which number like inequality represents n&lt;-1?
Alenkinab [10]
The second one is your answer
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