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3 years ago

The ages of the student volunteers at an event are 13, 11, 12, 15, 16, 11, 12,

Mathematics

2 answers:

aliya0001 [1]3 years ago

6 0

Answer:The mean is 13

Step-by-step explanation:

Add all up and divide by 10 because there are 10 numbers

ipn [44]3 years ago

4 0

Answer:

Step-by-step explanation:

add all the numbers divide by how many numbers there are

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What is the formula for finding the height of a sphere? No links. Thanks in advance.

inn [45]

Step-by-step explanation:

what is the formula for finding the height of a sphere?

H → 2r

6 0

3 years ago

Read 2 more answers

The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:

Jlenok [28]

Answer:

$y=\frac{1}{20}x^2$

Step-by-step explanation:

In this problem

we have

F(0,5) and directrix at y=-5

Is a vertical parabola open upward

we know that

The equation of a vertical parabola in standard form is

$(x-h)^2=4p(y-k)$

where

p is the focal distance

(h,k) is the vertex

we have

The vertex is the origin (0,0)

and

p=5

substitute

$(x-0)^2=4(5)(y-0)$

$x^2=20y$

$y=\frac{1}{20}x^2$

3 0

3 years ago

Suppose you pay $1.00 to roll a fair die with the understanding you will get $3.00 back rolling a 4 or a 2, and nothing otherwis

Evgesh-ka [11]

On the presumption that it is a cubic die, on average you will not gain nor lose any money. Out of the six faces, 1/3 of them are a 5 or a 2. So 1/3 of the time, you will gain 3$, but will lose 1$ from the initial payment. 1/3 of 3$ is 1$, so on average, you will gain 1$, while losing 1$.
Another way of looking at it is to take the possible out comes, and add the gains/loses, and you will come up with 0$.
1.9K views
Related Questions (More Answers Below)

6 0

3 years ago

Please help me solve!-

ruslelena [56]

R=17

5(17-2)=75

5(15)=75

75=75

4 0

3 years ago

Can help me complete this problem please :c

motikmotik

Answer:

$A = \dfrac{7}{2}\pi~cm^2$