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navik [9.2K]
2 years ago
9

A mechanic charges $20.00 an hour, h for labor plus parts. If the parts cost $217.00, write a linear equation that will find the

total cost, c. ​
Mathematics
1 answer:
Dennis_Churaev [7]2 years ago
8 0

Answer:

y=20x+217

Step-by-step explanation:

You might be interested in
Ratio And Proportion
Allushta [10]

Answer:

11200 for 7 engines for a total of 80 hours

Step-by-step explanation:

You have 8 engines burning 12000 .for 10 hours.

Divide 10 hours into 12000=1200 PER hour.

1200 ÷8 engines = 140 per hour per engine.

140 × # of hours (12)=1680 for 12 hours per engine.

# of engines × 1680 for 12 hour/per engine

5×1680 = 8400 of fuel for 12 hours/5 engine

Then you have 2 that runs 10 hours

2 × 140 per hour per engine =280 × 10 =2800 for 2 engines for 10 hours

8400. + 2800= 11200 of fuel for 6 engines

4 0
3 years ago
Which two numbers will be the same when rounded to the nearest ten, but different if rounded to the nearest hundred? Select the
Svetradugi [14.3K]

Answer:

547 & 544

Step-by-step explanation:

when you round 552 to the nearest 10 its 550 and 544 would be 540.

when rounded to the nearest hundred 552 would be 600 & 544 would be 500.

(could be wrong)

3 0
3 years ago
Find (4x2 - 2x + 1) + (2x + 8)
iVinArrow [24]

Answer: 4^2 + 9

Step-by-step explanation:

Simplify

4x^2 - 2x + 1 + 2x + 8

Collect like terms

4^2 + (-2x+2x) + (1+8)

Simplify

4x^2 + 9

6 0
3 years ago
- Jimmy is 440 miles from home, but he is driving back at a speed of 60 mph. Which equation
Musya8 [376]

440d=60t            it would take jimmy 7.33 hours to get home if he drove at a constant rate of 60 Miles Per Hour

8 0
3 years ago
Your friend claims that because each midsegment is half as long as the corresponding side of the triangle, the perimeter of the
AlexFokin [52]
Answer:
The claim is correct

Explanation:
Assume the given triangle ABC
perimeter of triangle ABC = AB + BC + CA ............> I

Now, we have:
D is the midpoint of AB, this means that:
AD = DB = (1/2) AB ..........> 1
E is the midpoint of AC, this means that:
AE = EC = (1/2) AC ...........> 2
DE is the midsegment in triangle ABC, this means that:
DE = (1/2) BC ...........> 3
perimeter of triangle ADE = AD + DE + EA
Substitute in this equation with the corresponding lengths in 1,2 and 3:
perimeter of triangle ADE = (1/2) AB + (1/2) BC = (1/2) AC
perimeter of triangle ADE = (1/2)(AB+BC+AC) .........> II

From I and II, we can prove that:
perimeter of triangle ADE = (1/2) perimeter of triangle ABC
Which means that:
perimeter of midsegment triangle is half the perimeter of the original triangle.

Hope this helps :)

7 0
3 years ago
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