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NNADVOKAT [17]
2 years ago
14

Jonathan needed to get his computer fixed. He took it to the repair store. The

Mathematics
1 answer:
kykrilka [37]2 years ago
8 0

Answer:

141 + 3x = 336

3x = 195

x = 65

So the cost of labor is $65 per hour.

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At the grocery store, an 8-inch cherry pie costs $4.39 and a similar 10-inch cherry pie cost $6.15. which is the better deal?
ValentinkaMS [17]
For the 8 inch pie you are paying about 55 cents per inch 
for the 10 inch pie you are paying about 61 cents per inch 
so the 8 inch pie is a better deal 

hope this helped 
oh and to get those numbers divide 4.39 by 8 and 6.15 by 10 
5 0
3 years ago
What is 2a +16 what does that =
kirill115 [55]
A will equal 8. can i get a brainliest plz
7 0
3 years ago
In an isosceles​ triangle, one angle is 75​° greater than each of the other two equal angles. Find the measure of all three angl
mote1985 [20]
It's 35, 35, and 110
8 0
3 years ago
The slope of the line
Fantom [35]

Answer: -2

Explanation:  On the image we can see it goes down 4 units and right 2. Giving us the slope \frac{-4}{2}

Simplified that is -2 which is the slope of the line

6 0
3 years ago
Graph f(x) =-2x^+16x-30 by factoring to find the solutions, then find the coordinates of the vertex, and the axis of symmetry. I
fredd [130]

Answer:

<em>Observe attached image</em>

<em>Function zeros:</em>

(3, 0), (5, 0)

<em>Vertex:</em>

(4, 2)

<em>Axis of symmetry:</em>

<em>x =4</em>

Step-by-step explanation:

<u>First factorize the function</u>

f (x) = -2x ^ 2 + 16x-30

<em>Take -2 as a common factor.</em>

-2(x ^ 2 -8x +15)

<em>Now factor the expression x ^ 2 -8x +15</em>

You must find two numbers that when you add them, obtain the result -8 and multiplying those numbers results in 15.

These numbers are -5 and -3

Then we can factor the expression in the following way:

f (x) = -2(x-5)(x-3)

<em><u>The quadratic function cuts the x-axis at </u></em><em>x = 3 and at x = 5.</em>

Now we find the coordinates of the vertex.

For a function of the form ax ^ 2 + bx + c the x coordinate of its vertex is:

x = \frac{-b}{2a}

In the function f (x) = -2x ^ 2 + 16x-30

a = -2\\b = 16\\c = 30

<u>Then the vertice is:</u>

x = \frac{-16}{2(-2)}\\\\x = 4

The y coordinate of the symmetry axis is

y = f (4) = -2 (4) ^ 2 +16 (4) -30\\\\y = 2

The axis of symmetry is a vertical line that cuts the parabola in two equal halves. This axis of symmetry always passes through the vertex.

<u>Then the axis of symmetry is the line</u>

x = 4

<u>The solutions and the vertice written as ordered pairs are:</u>

<em>Function zeros:</em>

(3, 0), (5, 0)

<em>Vertex:</em>

(4, 2)

6 0
3 years ago
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