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olya-2409 [2.1K]
2 years ago
5

Calculate the missing amounts for companies a to e

Mathematics
1 answer:
frez [133]2 years ago
8 0

Answer:

where is the question?

Step-by-step explanation:

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What is the vertex of the quadratic function f(x) = (x – 8)(x – 2)?
LekaFEV [45]
Something funny is that the x value of the vertex lies directl in the middle of the x intercepts
so
we see the x intercepts or 0's at x=8 and 2
the average is x=5
so find f(5) to find the y value of the vertex
f(5)=(5-8)(5-2)
f(5)=(-3)(3)
f(5)=-9

vertex is at (5,-9)

the actual way the teacher wants is to expand then compltete the square to get into the form f(x)=a(x-h)^2+k where the vertex is (h,k)
but whatever


verrtex is at (5,-9)
7 0
3 years ago
PLEASE HELP PICTURE IS SHOWN
chubhunter [2.5K]
A because 5*4 = 20 that why its a
6 0
3 years ago
The endpoints of are E(xE , yE) and F(xF , yF). What are the coordinates of the midpoint of ?
Masteriza [31]

Answer:

(\frac{x_e+x_f}{2} , \frac{y_e+y_f}{2})

Step-by-step explanation:

the coordinates of midpoint is average of x value of endpoints and average of y value of endpoints

8 0
3 years ago
Please help me I really need help
Oliga [24]

Answer:

Step-by-step explanation:

(1) 2x - 6y = -12

(2) x + 2y = 14

There is a -6y and a +2y. Since they have opposite signs, I'll try to eliminate the y terms. (That's my choice. There is more than one way to solve these.)

Multiply eq. (2) by 3:

3x + 6y = 42

Then add the result to eq. (1) to eliminate the y terms:

2x - 6y = -12

3x + 6y = 42

------------------

5x   = 30,  so x = 6

Now plug the value of x into eq. (2) and solve for y:

6 + 2y = 14

2y = 8

y = 4

Why did I use eq. (2) to solve for y? Because it's less work. I could have used eq. (1) instead:

2(6) - 6y = -12

12 - 6y = -12

-6y = -24

y = 4

More than one way to solve.

5 0
3 years ago
A dartboard has a circumference of 78.5 in.What is the diameter?
satela [25.4K]
2 \pi r = circumference
so,
\frac{circumference}{2 \pi } = radius

it equals 12.49 or 12.5 depending on rounding


I hope this helps!
4 0
3 years ago
Read 2 more answers
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