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3 years ago

Which amount is equivaent to 8 pounds?

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

8 0

It is equal to 3.6 kilogram
or 128 oz

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57.33 is 80% of what number?

Leni [432]

45.864, because 57.33 divided by 100 is 0.5733 that multiplied by 80 is 45.864

4 0

3 years ago

Solve by completing the square: 5x2 + 20x + 32 = 0

igor_vitrenko [27]

Your answer is no solution (because a negative square root doesn't exist)
first, you divide all sides by five and then take b, half it then square it

5 0

3 years ago

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

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

$10r = \ln{1.25}$

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

$r = 0.0223$

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

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

3 years ago

Where should the x be????

Eduardwww [97]

There should be an X over 9.6, 0, √16, and 2.45.

9.6 = Integer
0 = Whole Number
√16 (or 4) = Counting Numbers
2.45 = Integer

7 0

3 years ago

What is the value of x?<br>30<br>45<br>55<br>60

KATRIN_1 [288]

Answer:

$\boxed {\tt B. \ x=45}$

Step-by-step explanation:

x and 3x are on a straight line together. Therefore, they are supplementary and must add to 180 degrees.

Add x and 3x, and set that equal to 180.

$x+3x=180$

Combine like terms on the right side of the equation. Both x and 3x have a variable, so they can be added together.

$(x+3x)=180$

$4x=180$

Since we want to find x, we have to isolate x. x is being multiplied by 4. The inverse of multiplication is division. Divide both sides of the equation by 4.

$\frac{4x}{4} =\frac{180}{4}$

$x=\frac{180}{4}$

$x=45$

x is equal to 45, so the correct answer is B. 45

5 0

3 years ago

Read 2 more answers