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3 years ago

Help it’s due by the end of class

Mathematics

2 answers:

ki77a [65]3 years ago

7 0

I'm pretty sure the answer is A because it's the only one with correct scientific notation.

AlladinOne [14]3 years ago

6 0

Answer:

Step-by-step explanation:

Let's see...

It's a cube, so the total volume will be one length cubed or 10^3 which is 1000.

(2500 g)/(1000 cm^3) = $2.5 g/cm^3$

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I need help on this question

kherson [118]

Answer:

CA = opposite

BA = adjacent side

AC = hypotenuse

7 0

3 years ago

The population of a community is known to increase at a rate proportional to the number of people present at time t. The initial

xxTIMURxx [149]

Step-by-step explanation:

Let the initial population of a community be P0 and the population after time t is P(t).

If the population of a community is known to increase at a rate proportional to the number of people present at time t, this is expressed as:

$P(t) = P_0e^{kt}$

at t = 5 years, P(t) = 2P0

substitute:

$2P_0 = P_0e^{5k}\\2 = e^{5k}\\ln2 = lne^{5k}\\ln2 = 5k\\k = \frac{ln2}{5}\\k = 0.1386$

If the population is 9,000 after 3 years

at t = 3, P(t) = 9000

a) Substitute into the formula to get P0

$9000 = P_0e^{0.1386\times 3}\\9000 = P_0e^{0.4158}\\9000 = 1.5156P_0\\P_0 = \frac{9000}{1.5156}\\ P_0 = 5938.24$

Hence the initial population is approximately 5938.

b) In order to know how fast the population growing at t = 10, we will substitute t = 10 into the formula as shown:

$P(10) = 5938.24e^{0.1386(10)}\\P(10) = 5938.24e^{1.386}\\P(10) = 5938.24(3.9988)\\P(10) = 23,745.97$

Hence the population of the community after 10 years is approximately 23,746

4 0

4 years ago

What’s the value of x in each triangle?

vazorg [7]

Answer:

 The value of x is 70°.

Step-by-step explanation:

Let's name the angle to the right of 125° as 'y'.

y = 180 - 125 (linear pair)

y = 55°

Now, we know that all the angles in a triangle sum up to 180°. (Angle Sum Property)

x = 180 - (55+55)

x = 180 - 110

x = 70°

8 0

3 years ago

A boy's age in ten year time will be four times his age five years ago. Find his present age.

Katyanochek1 [597]

Answer:

He is ten.

Step-by-step explanation:

10 yrs old. Go ahead 10 yrs to make 20. Which is four times as much as five years old. (Which is 5 years before 10)

Hope this helps! :)

8 0

3 years ago

Use a protractor to find the measure of each angle in the circle

dalvyx [7]

You shouldnt be cheating! what would your guardian say!!!

*edit*
dont even need a protracter b/c there all evenly spaced and a line = 180 so 180 / 3 is 60

8 0

3 years ago