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vesna_86 [32]
3 years ago
8

Sally can paint a room in 8 hours while it takes steve 7 hours to paint the same room. how long would it take them to paint the

room if they worked together?
Mathematics
1 answer:
77julia77 [94]3 years ago
3 0
Rate for Sally is 1 room per 8hrs
rate for Steve is 1 room per 7hrs

combined rate:
1/8 + 1/7 = 1/T
7/56 + 8/56 = 1/T
15/56 = 1/T
56/15 = T
3 11/15 = 3 hrs 44 min
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in 2015, the population of a small town in florida is 95. if the population increases 15% very year, approximately what will the
ella [17]

Answer:

The approximate population of the town in 2023 will be 291

Step-by-step explanation:

In 2015, the population of a small town in Florida is 95

So, The population of a small town in Florida = 95

Now, The increase in the population of a small town in Florida is 15%

We need to find the approximate population of the small town in 2013

Number of years from 2015 to 2023 = 8 years

So, we need to find the population increase in 8 years with the rate of 15%

Thus, The increased population = initial population × ( 1 + 15%)^8

⇒ The increased population = 95 × 1.15^8

                                                = 290.61 ≈ 291

Therefore, The approximate population of the town in 2023 will be 291

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3 years ago
A(n) _____ variable is a variable that varies along with the independent variable.
Bond [772]
Dependent
Independent variables then have a dependent variable relying on them
6 0
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The number of laughs (denoted by L) can be defined as a function of the number of jokes (denoted by J), the amount of knowledge
MrMuchimi

Answer:

(A) (Jokes * Knowledge^2) / Familiarity

Step-by-step explanation:

The number of laughs (denoted by L) is a function of

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Given L=\frac{J\cdot K^2}{F}

The appropriate measurement unit for number of laughs will be:

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zhenek [66]

(−8.5)(−5)( −2)

This is a multiplication problem, so we can just multiply from left to right:

-8.5 x -5 = 42.5

42.5 x -2 = -85 (negative 85)

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3/13 would be the answer

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