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3 years ago

Which is equivalent ratio to 4:5 (select all that are true)

Mathematics

1 answer:

Sever21 [200]3 years ago

8 0

It is b only b I think sorry If I am wrong have a good day

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G 3.6 Dice rolls. If you roll a pair of fair dice, what is the probability of (a) getting a sum of 1

Paladinen [302]

Answer:

Step-by-step explanation:

In the roll of a pair of fair dice, The sample space is as follows:

(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)

If x,y represent the possible outcome of rolling the two die

Then the total number of possibilities for the sample space = (x,y)

= (6 × 6) = 36

Now, the probability of getting a sum of 1 does not exist in the roll of a pair of fair dice.

Therefore, Probability(1) = 0

8 0

4 years ago

Please help me. I need how to do the problem too

MatroZZZ [7]

Answer: Choice A. (8, 4)

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Explanation:

Because x = 2y, we can replace every copy of x with 2y

Let's do so in the second equation

3x - 4y = 8

3(x) - 4y = 8

3(2y) - 4y = 8 .... x replaced with 2y; now let's isolate y

6y - 4y = 8

2y = 8

y = 8/2 ..... divide both sides by 2

y = 4

Use this y value to find x

x = 2y

x = 2*4

x = 8

So we have x = 8 and y = 4 pair together to get the answer (x,y) = (8, 4) which is choice A.

5 0

3 years ago

Hello can you please help me posted picture of question

vagabundo [1.1K]

We are to select 2 people to sit in first row from 6.

This is a problem of Combinations. We are find permutation of 6 people taken 2 at a time. This can be represented as 6C2.

$6C2= \frac{6!}{4!*2!} \\ \\=15$

So, the answer is option B

7 0

3 years ago

Can someone please help me out!!!!

Elenna [48]

Use the brainly math caculate and slove both problems then add it and what ever you get is the premiter

4 0

3 years ago

A hiker walks at a speed of 3 2 5 kilometers per hour. How many kilometers will the hiker walk in

Vika [28.1K]

Answer:

= 2 4/15 km

Step-by-step explanation:

Speed = 3 2/5 km/hour

The units are not the same. The speeds is in hours and the time is in minutes

Lets convert minutes to hours. 60 minutes = 1 hour

40 minutes * 1 hour/ 60 minutes = 40/60 hours = 2/3 hour

Distance = speed * time

= 3 2/5 * 2/3

Change the mixed number to an improper fraction

3 2/5 = (5*3+2)/5 = 17/5

= 17/5 * 2/3

= 34/ 15 km

Change this back to a mixed number

15 goes into 34 2 times (15*2 = 30) with 4 left over

= 2 4/15 km

3 0

4 years ago