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lukranit [14]
2 years ago
15

Sarah brought her City car in for repairs and maintenance over the first three years she owned it she replace the brake pads in

the third year for $98 the preventive maintenance plan cost $723 but did she average per year for the repairs and maintenance​
Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
3 0

Answer: Average per year for the repairs and maintenance is $273.66

Step-by-step explanation:

She replace the brake pads in the third year for $98 and the preventive maintenance plan cost $723 

what did he average per year for repairs and maintenance?

The total cost of repairs and maintenance = 98 + 723 = 821

repairs and maintenance over the first three years 

Divide the answer by 3

821/ 3 = 273.67 dollars per year

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Factorise fully the following:<br>a) x² + 2x<br>b) 2x² - 6x<br>c) 15x - 10x³<br>d) 9x² + 3x³​
Lostsunrise [7]

Answer:

a) x(x+2)

b) 2x(x-3)

c) 5x(3-2x^2)

d) 3x^2(3+x)

Step-by-step explanation:

a) x^2+2x

When factoring a binomial (a polynomial with two terms), what we will be looking for are the terms that are shared between them.

In this problem, it can be seen that both of these terms have and x. This means that we can factor it out to get

x(x+2)

b) 2x^2-6x

What are the common terms here?

It can be seen that each of these share a 2x, so our factored form would be

2x(x-3)

c) 15x-10x^3

What about this one?

The common factor of this one is 5x, so our factored form would be

5x(3-2x^2)

d) 9x^2+3x^3

The common factor of this one is 3x^2, so our factored form would be

3x^2(3+x)

6 0
3 years ago
Can you help me with this question?
kirill [66]

Yes

Hope this helps                          

5 0
3 years ago
Arianna is working two summer jobs, making $6 per hour walking dogs and making $10 per hour tutoring. In a given week, she can w
Mice21 [21]

Step-by-step explanation:

x = number hours dog walking

y = number hours tutoring

x + y <= 11

6x + 10y >= 80

the solution is the common area below the first line and above the second line.

the first line is above the second line (due to the y-intercept of 11 vs. 8) until the crossing point.

for the crossing point we use the regular equations :

from the first we get

x = 11 - y

using this in the second

6×(11 - y) + 10y = 80

66 - 6y + 10y = 80

4y = 14

y = 14/4 = 7/2 = 3.5

x = 11 - y = 11 - 3.5 = 7.5

so, she has to do at least 3.5 hours tutoring (and then 7.5 hours dog walking) for the minimum of $80 earning, all the way up to the maximum of 11 hours tutoring (and 0 dog walking) for $110 earning.

8 0
2 years ago
A group of students each are given a certain number of green and yellow marbles​
allochka39001 [22]

Answer: A,d,f

Step-by-step explanation:

Because you have to simplify the ratios of the colors.

6 0
2 years ago
Explain in a minimum of 2 sentences how to graph the equation of the absolute value function given a vertex of (-1,3) and a valu
VladimirAG [237]
This would be y = |x+1| + 3
7 0
3 years ago
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