What is 180% of 140? A. 25.2 B. 128 C. 180 D. 252

What is h^2+6h-27 ????????????

nydimaria [60]

Answer:

Sorry it's acually (h+3)(h-9)

4 0

3 years ago

Autumn collected 129 seashells at the beach. What is 129 rounded to the nearest ten ?

skad [1K]

If you rounded off 129 to the nearest ten the answer would be 130

8 0

3 years ago

Read 2 more answers

Suppose that, after measuring the duration of many telephone calls, a telephone company found their data was well-approximated b

Musya8 [376]

Answer:

a) 7.79%

b) 67.03%

c) Cumulative Distribution Function

$P(t) = \displaystyle\int^{\infty}_{-\infty} 0.1e^{-0.1t}~dt\\\\= \displaystyle\int^{b}_{a} 0.1e^{-0.1t}~dt, ~~a\leq t \leq b$

Step-by-step explanation:

We are given the following in the question:

$p(x) = 0.1 e^{-0.1x}$

where x is the duration of a call, in minutes.

a) P( calls last between 2 and 3 minutes)

$=\displaystyle\int^3_2 p(x)~ dx\\\\= \displaystyle\int^3_20.1e^{-0.1x}~dx\\\\=\Big[-e^{-0.1x}\Big]^3_2\\\\=-\Big[e^{-0.3}-e^{-0.2}\Big]\\\\= 0.0779\\=7.79\%$

b) P(calls last 4 minutes or more)

$=\displaystyle\int^{\infty}_4 p(x)~ dx\\\\= \displaystyle\int^{\infty}_40.1e^{-0.1x}~dx\\\\=\Big[-e^{-0.1x}\Big]^{\infty}_4\\\\=-\Big[e^{\infty}-e^{-0.4}\Big]\\\\=-(0- 0.6703)\\= 0.6703\\=67.03\%$

c) cumulative distribution function

$P(t) = \displaystyle\int^{\infty}_{-\infty} 0.1e^{-0.1t}~dt\\\\= \displaystyle\int^{b}_{a} 0.1e^{-0.1t}~dt, ~~a\leq t \leq b$

6 0

3 years ago

What is a situation in which you would use fractions to express a number less than 1? What is a situation in which decimals seem

Semmy [17]

so you can not make the number smaller or reduce the fraction

ex.u can not simplify 11 over 12 because 11 is a prime number

8 0

3 years ago

What is 15% of 60. create a model to prove your answer

tamaranim1 [39]

15% = 0.15
x% of any number is 0.x * that number
so the answer is 0.15 * 60 = 9

6 0

3 years ago