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8_murik_8 [283]
3 years ago
13

A jar contains 5 blue marbles, 7 yellow marbles, and 8 green marbles. What is the probability of randomly choosing a blue marble

, not replacing it, and then choosing a green marble?
Mathematics
1 answer:
Leokris [45]3 years ago
7 0
I want to say about 27% but I am not completely sure
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Jose is solving the linear equation 28 - 3x - 15 = -2x + 13 - x. His final two steps are
Alex_Xolod [135]

Answer:

A

Step-by-step explanation:

you can put any number for the x so there are infinite solutions

6 0
2 years ago
Find the measure of each side of this triangles. Answer in exact form. ​ Find x and y
Firdavs [7]

Answer:

x = 24/√3

4√3 = y

Step-by-step explanation:

We are given that this is a right triangle as well as two angles and a side.

Given that the angles in a triangle add up to 180 degrees, and a right angle is 90 degrees, we can say that the missing angle is equal to

(180-90-30)  = 60 degrees

Next, given sohcahtoa, we can say that

sin(30) = opposite/hypotenuse = y/x

cos(30) = adjacent/hypotenuse = 12/x

tan(30) = opposite/adjacent = y/12

We want to only have one variable per equation so we can solve for the variable, so we can use

cos(30) = 12/x and tan(30) = y/12

Starting with cos(30) = 12/x, we can multiply both sides by x to remove the denominator to get

cos(30) * x = 12, and divide both sides by cos(30) to isolate the x and get

x = 12/cos(30). Next, cos(30) = √3/2, so we have

x = 12/(√3/2)

x = (12/1) / (√3/2)

x = (12/1) * (2/√3)

x = 24/√3

For y, we have

tan(30) = y/12

multiply both sides by 12 to isolate the y and remove the denominator

tan(30) * 12  = y

√3/3 * 12 = y

√3 * 4 = y

4√3 = y

4 0
3 years ago
i need help on a story problem? Jason ran 5/7 of the distance around the school track. Sara ran 4/5 of Jason's distance. What fr
julia-pushkina [17]
The first thing you do is to find the lowest common multiple of 5 and 7.What you do on the bottom, you must do on the top 25/35 / 28/35.  The answer is 25/28.  Sara ran 25/28 of the total distance around the track. 
3 0
3 years ago
What is the measure of arc WYZ?<br> ----------<br><br> 231<br><br> 255<br><br> 200<br><br> 168
Nataly_w [17]

9514 1404 393

Answer:

  (a)  231°

Step-by-step explanation:

  arc WYZ = arc WX + arc XYZ

  arc WYZ = 51° +180° . . . . . XZ is a diameter, substitute known arc measures

  arc WYZ = 231°

7 0
3 years ago
What is the number three and eight tenths as a decimal.
natali 33 [55]

Answer:

3.8

Step-by-step explanation:

3 8/10 can be written as 3.xx because all we have to do is 8 divided by 10 which equals .8 so 3+.8=3.8

7 0
2 years ago
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