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3 years ago

Riley is saving up to buy a new television. She needs a total of $1,279.93. Riley has saved $200.39 already and earns $77.11 per

Mathematics

1 answer:

Genrish500 [490]3 years ago

5 0

Answer:

A. 14

Step-by-step explanation:

we subtract 200.39 from our total cost, which gives us 1,079.54 and then we divide by the amount she earns a week, 77.11. to get 14. it will take riley 14 weeks to have enough money to get the television.

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A map use the scale 3/4 of an inch to represent 3 miles .if the actual distance between two cities is25 miles ,then what is the

slega [8]

<h3>given:</h3>

3/4 inch

3 miles

the length of the map

<h3>solution:</h3>

Based on the given conditions, write:

x= 34/ 4 · 25/ 3

Write as a single fraction:

x= 3 × 25/ 4/ 3

Divide a fraction by multiplying its reciprocal:

x= 3 x 25/ 4 × 1/ 3

Write as a single fraction:

x= 3 x 25/ 4 × 3

Reduce fraction to the lowest term by canceling 25 the greatest common factor:

x= 25/4

therefore,the length of the map is 25/ 4.

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The half life of a medication is the amount of time for half of the drug to be eliminated from the body. The half life of advil

Aleksandr [31]

In short, part A is from 1pm to 6pm, well, that's 5 hours, namely t = 5.

and part B is t = 12, so we simply plug those values in, nothing to it.

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and round it up as needed if any.

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3 years ago

The answer to this question. i’m confused and don’t understand it.

Georgia [21]

Answer:

5,120 bacterias

Step-by-step explanation:

Given the amount of bacteria after x hours modelled by the equation:

f(x) = 20(2)^x/12

Note that x is in hours not days

To calculate the number of bacteria that will be contained within the culture after 4 days, we will first convert 4days into hours since x is in hours.

24hours = 1day

xhours = 4days

x = 24×4

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Substituting x = 96 into the equation

f(96) = 20(2)^96/12

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5.85 kilograms a person

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4 years ago

Algebra!!! 3 Questions Only take if you know ALL Answers PLZZZ QUICK

vitfil [10]

Answer:

1. -7.5

2. $1

3. 40

Step-by-step explanation:

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6x - 4x - 36 = 6 - 2x

2x - 36= -2x + 6

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f(x) =1.50(3) + 2.00

and

f(x) = 2.00(3) + 1.50

This would get $6.50 and $7.50, which, if subtracted, gets $1.

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Hope this helps!

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3 years ago