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velikii [3]
3 years ago
7

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:

A

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:

<u> </u><u>The</u><u> </u><u>value</u><u> </u><u>of</u><u> </u><u>x</u><u> </u><u>is</u><u> </u><u>7</u><u>0</u><u>°</u><u>.</u>

Step-by-step explanation:

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

y = 180 - 125 (linear pair)

<u>y = 55</u>°

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

x = 180 - (55+55)

x = 180 - 110

<u>x</u><u> </u><u>=</u><u> </u><u>7</u><u>0</u><u>°</u>

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*
<span>dont even need a protracter b/c there all evenly spaced and a line = 180 so 180 / 3 is 60</span>
8 0
3 years ago
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