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tester [92]
3 years ago
8

How many hours will the plumber have worked if the total cost is $450?

Mathematics
2 answers:
ruslelena [56]3 years ago
4 0
Can you add more information??
Nesterboy [21]3 years ago
3 0

Answer:

he worked 9 hours.

Step-by-step explanation:

450/50= 9

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german

yes sure, i learned this before so

1. a. make a proportion here, of percentage. \frac{225}{250} =\frac{x}{100} if you cross multiply and divide you get 90%.

1. b. obviously the empty seats would be 10%.

2. a. proportion again, \frac{0.90}{6.00} =\frac{x}{100} cross multiply then divide you ge 15%

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7 0
4 years ago
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A bag contains 25 cookies. There are 15 choc. chip , and 7 peanut butter cookies and the rest are oatmeal raisin cookies. What i
stira [4]

Answer:

40 percent

Step-by-step explanation:

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8 0
3 years ago
I need help please?!!!
Sveta_85 [38]

Answer:

(-4,14)

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Step-by-step explanation:

5 0
3 years ago
I have two fair dice each numbered 1 to 6 I throw both dice and add the two numbers together. What is the probability that the n
liraira [26]

Answer:

7 / 36

Step-by-step explanation:

Using the sample space attached,

Required outcome = multiple of 5 from the sun of two rolled dice = 7

Total possible outcomes =(number of faces)² = 6² = 36

Therefore, the probability of obtaining a sum which is a multiple of 5 is :

P(sum which is a multiple of 5) :

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8 0
3 years ago
Plz help me 2x+y=4 4x+2y=8
aleksklad [387]

Answer: Y= 2 X=1

Step-by-step explanation:

2x+y=4                  4x+2y=8

2x     =/2                     2y= /2

y=2                          4x=4

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6 0
4 years ago
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