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bonufazy [111]
2 years ago
15

Help is for today ( this is sets) pls

Mathematics
1 answer:
Strike441 [17]2 years ago
5 0

Answer:

57

Step-by-step explanation:

There are 30 English

There are 28 German

There is one that speaks all 3

30 + 28 - 1 = 57

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The amount of Jen’s monthly phone bill is normally
vredina [299]

Answer:

P(19

And we can find this probability with this difference and using the normal standard distribution

P(-3

Step-by-step explanation:

Let X the random variable that represent the amount of Jen monthly phone of a population, and for this case we know the distribution for X is given by:

X \sim N(55,12)  

Where \mu=55 and \sigma=12

We are interested on this probability

P(19

And we can use the z score formula given by:

z=\frac{x-\mu}{\sigma}

Replacing the info we got:

P(19

And we can find this probability with this difference and using the normal standard distribution

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7 0
3 years ago
What is the probability that the sun will not rise tomorrow
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Answer:

given the sun has risen every day for the last 5000 years — or 1,826,213 days — the probability it will rise tomorrow is 1,826,214 / 1,826,215. which is 99.9%

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3 years ago
I save 2.75 pounds a week how much would i save 30 weeks
Marizza181 [45]
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8 0
3 years ago
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Which expression shows -5y (4-2y) + 8y^2-3y + 4 in simplest form?​
Tcecarenko [31]

Simplified: 18y^2-20y+1

3 0
2 years ago
The quadratic regression graphed on the coordinate grid represents the height of a road surface x meters from the center of the
andrew-mc [135]

The height of the surface increases, then decreases, from the center out to the sides of the road.

<h3>What is quadratic equation?</h3>

The polynomial having a degree of 2 is defined as the quadratic equation it means that the variable will have a maximum power of 2.

Let

y------> the height of the surface

x------> the road

we know that

The quadratic regression graphed represent a vertical parabola open downward

The function increase in the interval --------> (-5,0)        

The function decrease in the interval -------->   (0,5)

therefore

The height of the surface increases, then decreases, from the center out to the sides of the road.

To know more about quadratic equation follow

brainly.com/question/1214333

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2 years ago
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