A bag contains 6 red marbles, 4 blue marbles, 7 green marbles, and 3 yellow marbles. a marble is drawn from the bag and is not replaced. then a second marble is drawn. What is the probability that both marbles drawn were red?

9/100

3/38

3/40

9/95

Answers

Answer 1

Answer: 6/20 x 5/19 = 30/380 = 3/38

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a high school had 740 Students at the start of the year, but than some students left the school. after that the school had 726 students. if s=the number of students who is left at the school, which mathematical sentence expresses the information?

Answers

s=14................

Y=8 when x=20 find y when x= 30

Answers

Answer:

y=13

Step-by-step explanation:

if x=20 when y=8 (we can creat equation )

x=2y+4 (you can prove that the equation is correct by substitute )

so the question is if x=30 find the value of y

30=2y+4

30‒4=2y

26=2y

26/2=2y/2

13=y

i hope this helps you

Julian and stacey needed 10 liters of water to fill a tank. Stacey filled the tank with 3 11/12 liters of water. Julian poured 1 2/5 liters less than Stacey into the tank. How much more water is still needed to fill the tank?

Answers

The amount of water Julian and Stacey needed to fill the tank = 10 liters
Amount of water filled by Stacey individually = 3 11/12 liters
   = 47/12 liters
It is given in the question that Julian poured 12/5 liters less than Stacey.
Then Amount of water filled by Julian = (47/12) - (12/5) liters
      = (235 - 144)/60
   = 91/60
So Julian filled 91/60 liters of water in the tank.
Amount of water still needed to fill the tank = 10 - [(47/12) - (91/60)]
   = 10 - [(235 - 91)/60]
   = 10 - (144/60)
   = 10 - 12/5
   = (50 - 12)/5
   = 38/5
   = 7 3/5
so 7 3/5 liters of water is still required to fill the tank.

Answer:

Step-by-step explanation:

Can someone help me on this im confused..
-3x-10=32

Answers

Answer:

x = -14

Step-by-step explanation:

First, you will add 10 to both sides, to get -3x=42, so basicallly you are just simplifying it. Then, you will divide both sides by -3, so you can get x by itself, which you would then be left with x=-14. A little extra information, when you divide a positive number by a negative number it will result in a negative number, hence how I got -14. I hope this helps :)

The diameter of a soccer ball is 8.65 inches what is the volume of the ball rounded to nearest hundredth

Answers

A soccer ball is an icosahedron with curved faces that is why it can be regarded as spherical. The volume of a sphere is calculated through,

Vs = 4πr^3/3

where Vs is the volume and r is radius. From the given, 8.65 in is the diameter which is 4.325 in in radius.

Vs = 4π(4.325^3)/3 = 338.88 in cubed.

Thus, the volume of the ball is 338. 88 in cubed.

The speed of a body falling freely from rest in a vacuum varies directly with the length of the time it falls. If after 6 seconds, a body was falling 58.8 m/s, how fast was it falling 4 seconds later? (Round off your answer to the nearest meter per second.)