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erastovalidia [21]
4 years ago
6

fix-it-fast plumbing charges $25 for a house call and $50 for each hour spent on the job. do it right palm and charges $35 for a

house call and $45 each hour spent on the job how many hours must be spent on the job in order for the charges of two plumbing companies to be equal
Mathematics
1 answer:
QveST [7]4 years ago
6 0

Answer:

2 hours

Step-by-step explanation:

variable x = hours

fix it fast: 25 + 50x

do it right: 35 + 45x

25 + 50x = 35 + 45x

subtract 45x from both sides

subtract 25 from both sides

(this action cancels out 45x on the right side and 25 on the left side so you can combine like terms)

50x - 45x = 35 - 25

5x = 10

divide by 5 on both sides

x = 2

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6^3=216. Using exponents, write three more expressions whose value is 216.
faltersainse [42]

Answer:

216^1

(2^3)(3^3)

(2*2^2)(3*3^2)

Step-by-step explanation:

To solve this exercise you must keep on mind that according to the exponents rules:

(a^m)(a^n)=a^{(m+n)}

a^1=a

1) Therefore, you can write 216 as:

216^1  

Because: 216^1=216  

2) Descompose the number 216 into its prime factors, then:

216=2*2*2*3*3*3=(2^3)(3^3)

Then you can write the number 216 as (2^3)(3^3)

3) You can also write 216 as following:

(2*2^2)(3*3^2)

7 0
4 years ago
Find the slope, if it exists, of the line containing the pair of points. (8,3) and (9,-8)
AlladinOne [14]

Answer: slopeis -11

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Abdul's average speed is 30 mph in heavy traffic, and his average speed is 60 mph in light traffic. If he was in heavy traffic f
ki77a [65]

Answer:

150 miles

Step-by-step explanation:

Abdul's average speed  in heavy traffic = 30 mph

Time Spent in heavy traffic = 1 hour

Distance covered in heavy traffic =Speed in heavy traffic X Time Spent in Heavy Traffic

=30 X 1 =30 miles

Abdul's Average speed in light traffic= 60 mph

Time Spent in light traffic = 2 hours

Distance covered in light traffic =Speed in light traffic X Time Spent in light Traffic = 60 X 2 =120 miles

Total Distance covered by Abdul = Distance covered in heavy traffic + Distance covered in light traffic

=30 + 120

=150 miles

8 0
3 years ago
the population of mexico has been increasing at anaual rate of 1.7%. if the population was 100,350,000 in the year 2000, predict
loris [4]
P=A (1+r)^t
P=100350000×(1+0.017)^(2015−2000)
p=129,220,575
5 0
3 years ago
A science classroom has 5 turtles and 7 frogs. What is the ratio of FROGS to TOTAL animals?
olasank [31]

Answer:

7:12

Step-by-step explanation:

there is 5 turtles and all 5 turtles plus 7 frogs = 12

(5+7+12)

7:12

4 0
3 years ago
Read 2 more answers
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