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Citrus2011 [14]
3 years ago
9

Each cube is 1.5cm long calculate the surface area I need this quick ​

Mathematics
1 answer:
algol133 years ago
3 0

Answer:

13.5

Step-by-step explanation:

6(1.5×1.5)

6(2.25)

13.5

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The population of a town grows at a rate proportional to the population present at time t. The initial population of 500 increas
Mazyrski [523]

Answer:

The population in 40 years will be 1220.

Step-by-step explanation:

The population of a town grows at a rate proportional to the population present at time t.

This means that:

P(t) = P(0)e^{rt}

In which P(t) is the population after t years, P(0) is the initial population and r is the growth rate.

The initial population of 500 increases by 25% in 10 years.

This means that P(0) = 500, P(10) = 1.25*500 = 625

We apply this to the equation and find t.

P(t) = P(0)e^{rt}

625 = 500e^{10r}

e^{10r} = \frac{625}{500}

e^{10r} = 1.25

Applying ln to both sides

\ln{e^{10r}} = \ln{1.25}

10r = \ln{1.25}

r = \frac{\ln{1.25}}{10}

r = 0.0223

So

P(t) = 500e^{0.0223t}

What will be the population in 40 years

This is P(40).

P(t) = 500e^{0.0223t}

P(40) = 500e^{0.0223*40} = 1220

The population in 40 years will be 1220.

7 0
4 years ago
ASAP HELP! Look how much im offering, congruent shapes.
dmitriy555 [2]

Answer:

D. 7.5 inches

Step-by-step explanation:

So, we can find the ratio of the big triangle to the small one by dividing the values of the hypotenuse.

So, 18/6 = 3

Big:small = 3:1

So, using this we can make an equation to find AD.

Let's say ED=x.

AD is basically ED (x) + AE (5).

Since ED is part of the small triangle, and AD is part of the big one, we can use the 3:1 ratio from above.

So, \frac{x+5}{x}=3.

Multiply both sides by x, getting x+5 = 3x.

Subtract the x:                            -x        -x

And you get 5=2x, giving you 2.5 = x.

However, we're not done yet, as 2.5 is the value of ED, but we need AD.

Remember, AD is = ED + AE.

So, AD = 2.5 + 5.

Finally, AD =  7.5

7 0
3 years ago
Write the percent as a decimal. <br><br> 110%
faust18 [17]
110% as a decimal is 1.1
6 0
3 years ago
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The fruit bowl originally had 12 apples in it. Sally ate 25% of the apples from the bowl. How many apples are left in the bowl?
dmitriy555 [2]

Step-by-step explanation:

three apples were eaten so remove 3 from 12 to find the number of apples left

6 0
3 years ago
A school table has 8 sides of equal lengths. if one side is 4 feet, what is the perimeter of the table?
Law Incorporation [45]
Since the table has 8 sides that all have the same length then multiply 4 by 8 so the answer is 32 
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3 years ago
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