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3 years ago

Look at image for question

Mathematics

1 answer:

kotegsom [21]3 years ago

8 0

Answer:

r=0.5 or 1/2

Step-by-step explanation:

if you multiply 0.5 to each Xs you can find out why r is 0.5

You might be interested in

you and Michael have a total of 21 books. if michael has twice as many books as you do how many books do you have?

ankoles [38]

7 because 7•3=21 and if he has as twice much as you 7•2=14 & 14+7=21 books together

8 0

2 years ago

What is the formed of the fact family for 6,7,13 what is the answer

Keith_Richards [23]

Answer:

7 + 6 = 13

13 = 7 + 6

13 – 6 = 7

7 = 13 – 6

Step-by-step explanation:

7 + 13 = 20

13 + 7 = 20

13 – 13 = 0

13 – 0 = 13

7 + 0 = 7

6 + 0 = 6

13 – 0 = 13

13 – 13 = 0

7 + 0 = 7

6 + 0 = 6

13 – 0 = 13

13 – 13 = 0

7 + 6 = 13

13 = 7 + 6

13 – 6 = 7

7 = 13 – 6

5 0

2 years ago

What are two different ways in which you can use prime factorization to find the prime factors of a number

LekaFEV [45]

You can line them up underneath each other and skip count is one way like this :

2; 2,4,6,8,10
4; 4,8,12,16,

and your answer would be 8 because it is a common number between 2 and 4

6 0

3 years ago

A bacterial culture grows exponentially according to the function n(t)=n(e^n), where n(t) is the quantity after t hours and n is

mart [117]

Answer:

$n(t=2) = 2 e^{1.386294361(2)}=32 grams$

So then after 2 hours we will have 32 grams.

Step-by-step explanation:

For this case we have the followin exponential model:

$n(t) = n e^{rt}$

n(t) is the quantity after t hours, n is the original quantityand t represent the hours and r the rate constant.

For this case we know that n(0) = 2 grams and n(3) = 128 grams and we want to find n(2)=?

From the initial condition we know that n = 2, and we have the model like this:

$n(t) = 2 e^{rt}$

Now if we apply the other conditionn(3) = 128 we got:

$128 = 2 e^{3r}$

If we divide both sides by 2 we got:

$64= e^{3r}$

If we apply natural log for both sides we got:

$ln(64) = 3r$

$r = \frac{ln(64)}{3}=1.386294361$

And our model is this one:

$n(t) = 2 e^{1.386294361t}$

And if we replace t = 2 hours we got:

$n(t=2) = 2 e^{1.386294361(2)}=32 grams$

So then after 2 hours we will have 32 grams.

5 0

3 years ago

a camera attached to a telescope photograph the Stars image once every 0.045 seconds how many complete images can the camera cap

RideAnS [48]

Answer:

0.135 images

Step-by-step explanation:

all you have to do is multiply 0.045× 3.

The answer is 0.135.

you have go move the decimals 3 times to the left

5 0

3 years ago