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Dominik [7]
2 years ago
15

A scooter tracked 30 feet in 2 seconds at a constant speed what is the speed of the scooter in feet per second

Mathematics
1 answer:
svp [43]2 years ago
4 0
15 feet per second. divide 30 by 2
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Given the information below, is (DB) ⃡ tangent to Circle A at point B? Justify with shown work.
Arisa [49]
Hj said he would be a little bit later on Friday and
4 0
3 years ago
The number of tickets purchased by an individual for Beckham College's holiday music festival is a uniformly distributed random
Zanzabum

1) Mean: 6.5

2) Standard deviation: 3.2

Step-by-step explanation:

1)

A uniform random distribution is the distribution of a variable that can assume n different values, and each of these values is equally likely to occur.

This means that the probability of occurring of each of these values is the same:

p(x_1)=p(x_2)=...=p(x_n)

For a uniform random distribution, the mean of the distribution is simply equal to the median value of the distribution, which is exactly at the center of the distribution itself. It can be calculated as

\bar x = \frac{1}{2}(a+b)

where

a is the lowest value of the distribution

b is the highest value of the distribution

Here the distribution consists of all values ranging from 1 to 12, so:

a = 1

b = 12

Therefore the mean value is

\bar x=\frac{1}{2}(1+12)=6.5

2)

For a uniform random distribution, it can be dimostrated that the variance of the distribution is

\sigma^2 = \frac{1}{12}(b-a)^2

For the distribution in this problem, we have:

a = 1

b = 12

Therefore the variance is

\sigma^2 = \frac{1}{12}(12-1)^2=10.08

The standard deviation is the square root of the variance, therefore for this distribution it is:

\sqrt{\sigma^2}=\sqrt{10.08}=3.2

Learn more about mean and standard deviation:

brainly.com/question/6073431

brainly.com/question/8799684

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#LearnwithBrainly

3 0
3 years ago
Bobby has a bag containing 2 sizes of marbles. The big ones weigh 10 g and the small ones weigh 3 g. If there are three times as
Vikentia [17]

Answer:

There are 19 big marbles

Step-by-step explanation:

10a + 3b = 209

a = 3b

3b = 3b

10a + a = 209

11a = 209

a = 209/11

a = 19

8 0
3 years ago
(x/6)-10=2<br> please help me find x
Ymorist [56]

Answer:

x = 72

Step-by-step explanation:

( \frac{x}{6})  - 10 = 2 \\ ( \frac{x}{6} ) = 2 + 10 \\  \frac{x}{6}  = 12 \\ x = 12 \times 6 \\ x = 72

8 0
1 year ago
Point c partitions line segment AB in the ratio 1:3. What is the y-coordinate of c.
Veseljchak [2.6K]

The y-coordinate of c is -4 if the Point c partitions line segment AB in the ratio of 1:3.

<h3>What is a straight line?</h3>

A straight line is a combination of endless points joined on both sides of the point.

We have two points:

A(-4, -7), and B(12, 5)

Let's assume A(x1, y1)  and B(x2, y2)

The ratio is 1:3 = m:n

Let's assume the y-coordinate is a

From the section formula:

\rm a = \dfrac{my_2+ny_1}{m+n}

\rm a = \dfrac{1\times5+3\times(-7)}{1+3}

a = -4

Thus, the y-coordinate of c is -4 if the Point c partitions line segment AB in the ratio of 1:3.

Learn more about the straight line here:

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#SPJ1

8 0
1 year ago
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