All categories

3 years ago

250 is 1.5cm. How thick is 400 pages

Mathematics

1 answer:

svetlana [45]3 years ago

7 0

Answer: 2.4 cm

Step-by-step explanation:

1.5 divided by 250 gives that each page is .006cm. 400 times .006 is 2.4cm

You might be interested in

Gerardo made the following scores on his first semester science tests: 80, 85, 85, 87, 97, 100. Which measure would he use in su

Elza [17]

The mean is 89 the median is 86 the mode is 85 Hope this helps!

(technically the mean is like 88.7 so I just rounded up to get 89)

4 0

3 years ago

If a function f has an inverse function, then fis one-to-one.<br> A) True<br> B) False

Len [333]

Answer:

true

Step-by-step explanation:

4 0

3 years ago

The average lifetime of a certain new cell phone is 3.4 years. The manufacturer will replace any cell phone failing within three

melisa1 [442]

Answer:

68% of these phones last 3.87 years.

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

The average lifetime of a certain new cell phone is 3.4 years.

This means that $m = 3.4, \mu = \frac{1}{3.4} = 0.2941$

$P(X \leq x) = 1 - e^{-0.2941x}$

68% of these phones last how long (in years)?

This is x for which:

$P(X \leq x) = 0.68$

$P(X \leq x) = 1 - e^{-0.2941x}$

Then

$0.68 = 1 - e^{-0.2941x}$

$e{-0.2941x} = 0.32$

$\ln{e{-0.2941x}} = \ln{0.32}$

$-0.2941x = \ln{0.32}$

$x = -\frac{\ln{0.32}}{0.2941}$

$x = 3.87$

68% of these phones last 3.87 years.

4 0

3 years ago

A number, n, is added to 15 less than 3 times itself. The result is 101. Which equation can be used to find the value

taurus [48]

Answer:

see explanation

Step-by-step explanation:

15 less than 3 times n is 3n - 15, thus

n + 3n - 15 = 101 ← equation modelling the situation

4n - 15 = 101 ( add 15 to both sides )

4n = 116 ( divide both sides by 4 )

n = 29

5 0

4 years ago

PLEASE HELP ASAP I WILL MARK BRAINLIEST

Nikitich [7]

Answer:

hope this helps

Step-by-step explanation:

If all angles are measured by 60 degrees, this triangle is not scalene because its angles are not different. The one that has angles of 20, 50, and 110 degrees is scalene because all of its angle measures are different

7 0

4 years ago

Read 2 more answers