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lakkis [162]
3 years ago
15

Use division(scale down) to find two ratios equivalent to 30:40.

Mathematics
1 answer:
Korvikt [17]3 years ago
4 0

Answer:

3:4 and 15:20

Step-by-step explanation:

30: 40 divided by 10 = 3:4

30:40 divided by 2 = 15:20

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A population of 550 rabbits is increasing by 7.5% each year. In about how many years will the population be over 1000?
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Answer:

D.) 15 years

Step-by-step explanation:

7.5% of 550 rabbits would be 41.25

if you are increasing till you get over 1,000

it would take 10.9 almost 11 years to get to 1,000

meaning it would be 15 years when your over 1,000 giving you 1,168.75

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Last week, the price of apples at a grocery store was $1.60 per pound. This week, apples at the same grocery store are on sale a
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Are all whole numbers rational numbers
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5 0
3 years ago
Sheri's brother gave Sam his collection of stamps when she left for college. At that
pychu [463]

Answer: $70 per year.

Step-by-step explanation:

Let's say that x is the number of years that has passed and y is how much the stamp is worth.

So we know that in zero years the stamp was worth $420 because that is the time Sheri gave her brother Sam the stamp. That could bring up the coordinates  (0,420) .

Now we know that in 8 years it was worth $980 and that could be the coordinates (8,980)

To find the rate of change we need to find the different between the y value and divide it by the difference in the x values.

420 - 980 = -560

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-560/-8 = 70

The rate of change is 70 which means that it grew by $70 every year.

6 0
3 years ago
Please help 8th time posting
neonofarm [45]

Answer:

Graham: -50x + 14,040

Max:  20x + 12,500

  Graham = Max

-50x + 14,040 = 20x + 12,500

   +50x +50x              

       14,040 = 70x + 12,500

          -12,500-12.500

            1,540  = 70x

               220 = x

Answer: 220 minutes (3 hours 40 minutes)

PLZ MARK AS BRAINILEST:-)

3 0
2 years ago
Read 2 more answers
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