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ivolga24 [154]
3 years ago
5

Laila read 36 pages in 4 hours. Which expression can be used to find the number of pages she read per hour?

Mathematics
2 answers:
scoray [572]3 years ago
7 0
Lets see do 36/4 and you should have your answer
spin [16.1K]3 years ago
4 0
36/4 would find the average number of pages she read per hour. since you are dividing the total number by the number of hours she took in total. 
HOWEVER, bare in mind that this is not always an accurate representation of how many pages she DID read, since she might have read some pages slower than others. 
BUT you can generalise and say she read 9 pages (36/4) every hour, on average <span />
You might be interested in
The lifetime of LCD TV sets follows an exponential distribution with a mean of 100,000 hours. Compute the probability a televisi
kondaur [170]

Answer:

0.9

0.3012

0.1809

230258.5

Step-by-step explanation:

Given that:

μ = 100,000

λ = 1/μ = 1 / 100000 = 0.00001

a. Fails in less than 10,000 hours.

P(X < 10,000) = 1 - e^-λx

x = 10,000

P(X < 10,000) = 1 - e^-(0.00001 * 10000)

= 1 - e^-0.1

= 1 - 0.1

= 0.9

b. Lasts more than 120,000 hours.

X more than 120000

P(X > 120,000) = e^-λx

P(X > 120,000) = e^-(0.00001 * 120000)

P(X > 120,000) = e^-1.2

= 0.3011942 = 0.3012

c. Fails between 60,000 and 100,000 hours of use.

P(X < 60000) = 1 - e^-λx

x = 60000

P(X < 60,000) = 1 - e^-(0.00001 * 60000)

= 1 - e-^-0.6

= 1 - 0.5488116

= 0.4511883

P(X < 100000) = 1 - e^-λx

x = 100000

P(X < 60,000) = 1 - e^-(0.00001 * 100000)

= 1 - e^-1

= 1 - 0.3678794

= 0.6321205

Hence,

0.6321205 - 0.4511883 = 0.1809322

d. Find the 90th percentile. So 10 percent of the TV sets last more than what length of time?

P(x > x) = 10% = 0.1

P(x > x) = e^-λx

0.1 = e^-0.00001 * x

Take the In

−2.302585 = - 0.00001x

2.302585 / 0.00001

= 230258.5

3 0
3 years ago
ASAP!!! PLEASE help me with this question!
mihalych1998 [28]

Answer:

C. 16π

Step-by-step explanation:

Well we need to find the area of the top circle which has a radius of 4cm.

π(4)^2

16π in terms of pi

<em>Thus,</em>

<em>the answer is C. 16π.</em>

<em />

<em>Hope this helps :)</em>

4 0
3 years ago
Will mark brainliest for whoever answers
RSB [31]
The answer is a I believe

I hope this helped :)
7 0
2 years ago
(2.0x10^4)(3.0x10^3)
krok68 [10]
<span>(2.0x10^4)(3.0x10^3)
= ( 2 x 3)( 10^4 x 10^3)
= 6 x 10^7

hope it helps</span>
4 0
2 years ago
Tetsuo's savings account has a balance of $1192. After 22 years, what will the amount of interest be at 1.5% compounded annually
Bess [88]
I think C is the answer
5 0
3 years ago
Read 2 more answers
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