All categories

3 years ago

A city doubles its size every 29 years. If the population is currently 300,000, what will the population be in 58 years?

Mathematics

1 answer:

pshichka [43]3 years ago

7 0

Answer:

1,200,000 or 900,000

Step-by-step explanation:

what i did was subtract 29 from 58 until i couldn't so 58-29=29 then 29-29=0 that 2. then i did 300,000*2=600,000. now if we double again like it says every 29 years then its 600,000*2=1,200,000. or you do 300,000+300,000=600,000 then 600,000+300,000=900,000

You might be interested in

What are the slope and y intercept of the linear function? Please help

kow [346]

FIND THE SLOPE
The line passes through (0,1) and (2,0)
Use formula of the slope to find the slope
m = (y₂ - y₁)/(x₂ - x₁)
m = (0-1)/(2-0)
m = -1/2
The slope is -1/2

FIND THE Y-INTERCEPT
The y-intercept is the value of y when the line intersects y axis. The line intersects y axis in point (0,1). The value of y is 1. So the y-intercept is 1.

Answer: second option

8 0

3 years ago

Suppose spin a spinner with eight equal sectors, numbered 1 to 8. What is the probability of spinning a 3 or an 8?

olasank [31]

Given, in the spinner 8 equal sectors, numbered 1 to 8.

So total numbers = 8.

Let, the probability of spinning a 3 is P(Three) and spinning an 8 is P(Eight).

Now we know that, probability of an event E is

P(E) = (number of outcomes in the event)/ (total number of possible outcomes).

So here number of outcomes for spinning a 3 is 1 and we have got total outcomes = 8.

So P(Three) = $\frac{1}{8}$

Similarly, P(Eight) = $\frac{1}{8}$

Probability of spinning a 3 or an 8 = P(Three) + P(Eight)

= $\frac{1}{8} + \frac{1}{8}$

As the denominator is same we can add the numerator.

= $\frac{(1+1)}{8}$

= $\frac{2}{8}$

Now we have to simplify the fraction by dividing the numerator and denominator by a common factor of them.

The common factor of 2 and 8 is 2. So by dividing them we will get,

= $\frac{1}{4}$

We have got the required answer.

The probability of spinning a 3 or an 8 is $\frac{1}{4}$

4 0

3 years ago

Read 2 more answers

I need step by step explanation for this!!

Margaret [11]

<h3>Answer: The original number is 57</h3>

=========================================================

Explanation:

T = tens digit of original number

U = units digit of original number

"units digit" is the same as "ones digit"

The original number is in the form 10T+U. For example, let's say that T = 3 is the tens digit and U = 1 is the units digit. This means 10T+U = 10*3+1 = 31 is the original number. Though in this example, the digits don't add to 12.

To make the digits add to 12, we have the equation T+U = 12. This solves to U = 12-T which we'll use later.

--------------------

The digits are reversed to get the new number 10U+T and this is 15 times the original tens digit, so

new number = 15*(original tens digit)

10U+T = 15T

from here we plug in U = 12-T which we found earlier. This effectively eliminates or gets rid of the U variable to leave us with T only

10U+T = 15T

10(12-T)+T = 15T ..... replace U with 12-T

which we can now solve for T

--------------------

10(12-T)+T = 15T

120-10T+T = 15T

-9T+120 = 15T

120 = 15T+9T ... adding 9T to both sides

120 = 24T

24T = 120

T = 120/24 .... divide both sides by 24

T = 5

The original tens digit is T = 5

The original units digit is U = 12-T = 12-5 = 7

So the original number is 10T+U = 10*5+7 = 57

Flipping the digits gets us 75 which is 15 times that of the original tens digit of 5. The original number has its digits add to 5+7 = 12. The answer has been confirmed.

6 0

3 years ago

Read 2 more answers

Simplify: -3 1/2-(-12 1/4) mi

nasty-shy [4]

Answer: 35/4 miles..... (Hopefully I read correctly)

Step-by-step explanation:

(-7/2)-(-49/4)

(-7/2)+49/4

-14/4+49/4

35/4

Hope this helps!

6 0

4 years ago

What is the value of -<br> -X2 - 4x – 11 if x = -3?

qaws [65]

The answer to this question is -8

3 0

3 years ago