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4 years ago

Matt is standing on top of the bleachers and throws a Frisbee. The height of the Frisbee

Mathematics

1 answer:

Mashutka [201]4 years ago

5 0

No idea, sorry try googling the question

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A high school coach wants to buy new shirts for the 25 members of the track team. The coach must spend less than $300 on the shi

vivado [14]

The inequality should be written as 25s <300

The circle is open.

The arrow points left.

8 0

3 years ago

Read 2 more answers

Please help I'm almost done!

lord [1]

Answer:

C) The song shop

Step-by-step explanation:

Divide all prices by the amount of songs purchased. example: 7.92/6=1.32

6 0

3 years ago

PLEASE HELP ME I NEED HELP PLEASE HELP

lyudmila [28]

Answer:

1st question is 1:2

2nd question is 5

Step-by-step explanation:

15 times two is 30, so if you divide both 15 and 30 by 15, you get 1:2

Divide 300 and 60 and you get 5.

6 0

3 years ago

Read 2 more answers

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

Which is the coefficient of the expression 82 + 4 - 3x ?

Illusion [34]

Answer:

86 - 3x

Step-by-step explanation:

1- Calculate

7 0

3 years ago