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gizmo_the_mogwai [7]
3 years ago
10

I need help please get on z o o m

Mathematics
1 answer:
sergiy2304 [10]3 years ago
5 0

Answer:

Ok

Step-by-step explanation:

Send me link I will help u

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The function f(x) = –x2 + 20x – 75 models the profit from one customer, in dollars, a shop makes for printing photos, where x is
trasher [3.6K]
The function is graphed as shown below

Part A:

We use the formula - \frac{b}{2a} to find the vertex of the function. A quadratic function of the form of a x^{2} +bx+c and equating this form to the given function - x^{2} +20x-75, we have
b=20 and a=-1.

Substituting a and b into the vertex formula, we have
x=- \frac{20}{2(-1)}=10, as shown in the graph

This calculation means that the highest profit is achieved when the number of photo printed equals to ten photos

Part B:

We can find solution to this equation by factorising

- x^{2} +20x-75=0
-( x^{2} -20x+75)=0
x^{2} -20x+75=0
(x-5)(x-15)=0
x=5 and x=15, as shown in the graph

The two values means that the company makes no profit when they either produce 5 or 15 photos

8 0
3 years ago
He table shows the solution to the equation |2x − 5| − 2 = 3:
ozzi
The solution is completely correct, as putting 5 or 0 in the formula again will make it true.

|2(0)-5|=5
|-5|=5
5=5

|2(5)-5|=5
|10-5|=5
5=5
6 0
3 years ago
Is it c or d ?im confused on this question
sladkih [1.3K]
It’s D, when lines are perpendicular, the slopes of the lines are opposite reciprocals.
8 0
3 years ago
Bella wants to know how long her dog is. She measure its body and finds that it is 54 cm long. Then she measures the tail and fi
Nady [450]

Answer:

88 cm

Step-by-step explanation:

body to tail = length of body + length of tail

body to tail = 54 cm + 34 cm

body to tail = 88 cm

7 0
2 years ago
A plot of land is in the shape of a triangle. If one side is X meters, a second side Is (5x-2) meters and a third side is (7x-4)
lukranit [14]
Perimeter = x + 5x - 2 + 7x - 4

=  13x - 6  meters answer
6 0
3 years ago
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