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2 years ago

What is the probability of getting a tails, vowel and an even number?

Mathematics

2 answers:

Zinaida [17]2 years ago

8 0

Answer:

$\frac{1}{15}$

This is assuming the die is from 1 - 5

Step-by-step explanation:

Tails: 0.5

Vowel: $\frac{1}{3}$

Even number: $\frac{2}{5}$

$\frac{1}{2}* \frac{1}{3} *\frac{2}{5} =\frac{2}{30}=\frac{1}{15}$

matrenka [14]2 years ago

5 0

The coin has two sides, one is heads and one is tails. So the probability of getting tails is 1/2, or 50%.
The “circle” divided into 3 parts, ABC...the only vowel is A, B and C are constants. So the probability of getting a vowel is 1/3, or 33.3333.... chance.
The four sided dice has 4 sides, 4 numbers, 1-4. 2 numbers are even. So 2/4 or 1/2 or 50%

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What is the surface are of the triangle prism

stepladder [879]

You can find the area of a triangular prism by putting it into a bet and finding the area of all sides then adding them together

5 0

3 years ago

Please help in the question it should be if t=-6 when r =-2 its an error

Natasha2012 [34]

Answer:

r = - $\frac{12}{7}$

Step-by-step explanation:

Given that r varies inversely as t , then the equation relating them is

r = $\frac{k}{t}$ ← k is the constant of variation

To find k use the condition t = - 6 when r = - 2, then

- 2 = $\frac{k}{-6}$ ( multiply both sides by - 6 )

12 = k, thus

r = $\frac{12}{t}$ ← equation of variation

when t = - 7, then

r = $\frac{12}{-7}$ = - $\frac{12}{7}$

7 0

3 years ago

Make a Matlab script to make row 2 of matrix A equal to first row of A multiplied by the negative of the first element of row 2

stira [4]

Answer:

$X=\begin{Bmatrix}2& 1 &10 \\-3 & 5 & 4\end{Bmatrix}$

Step-by-step explanation:

From the question we are told that

Matrix is given as $A=\begin{Bmatrix}2 & -1 & 10\\-3 & 8 & 4\end{Bmatrix}$

Generally let the change in matrix be given as X

$X_1_2 = 2*(-(-1)) + - 1 = 1X_2_2 = -3 * (-(-1))+ 8 = 5$

Matlab output

$A=[2 -1 10;-3 8 4]\\a=(A(1,1)*-A(1,2))+A(1,2)\\b=(A(2,1)*-A(1,2))+A(2,2)\\X=[A(1,1) a A(1,3); A(2,1) b A(2,3)]\\$

Generally the matrix that makes row 2 of matrix A equal to first row of A multiplied by the negative of the first element of row 2 plus the original row is

$X=\begin{Bmatrix}2& 1 &10 \\-3 & 5 & 4\end{Bmatrix}$

6 0

2 years ago

Justin started eating lunch at 12:23 and finish at 12:45. how much elapsed time while he was eating lunch

ValentinkaMS [17]

Answer:

22 minutes

Step-by-step explanation:

12:45- 12:23

= 22 minutes

4 0

2 years ago

Why is the answer B? Plz explain.

sergeinik [125]

For line l to intersect line m at point (2, 1/2), line m must have the point (2,1/2) on its graph. It is implied that line l already has the point (2, 1/2). If line m does not have it, then there will be no intersection at that specific point.

Try checking every choice to see if it has point (2,1/2) on the graph.
Note that (x,y) = (2,1/2); check by using x=2 and y=1/2.

For A,

2x = y/2
2(2) = (1/2) / 2
4 <span>≠ 1/4
</span>
Cannot be choice A as it results in a false equation; this choice will not go through (2,1/2)

For B:

2y = 3 - x
2(1/2) = 3 - 2
1 = 1

This is a true equation so the point (2,1/2) is on the graph of 2y=3-x. This means that if this is the equation for line m, then line m will have a point at (2,1/2) and therefore intersect with line l. Therefore, B is the answer.

The rest of the choices are false as shown:

For C:

2x + 4y = 8
2(2) + 4(1/2) = 8
4 + 2 = 8
6 ≠ 8

Cannot be choice C as it results in a false equation; this choice will not go through (2,1/2)

For D:

y = 4 - (5/4)x
1/2 = 4 - (5/4)(2)
1/2 = 4 - 5/2
1/2 = 8/2 - 5/2
1/2≠ 3/2

Cannot be choice D as it results in a false equation; this choice will not go through (2,1/2)

4 0

3 years ago