Ask question

Ask question

All categories

3 years ago

9

A bag contains 7 red marbles, 6 blue marbles and 3 green marbles. If three marbles are drawn out of the bag, what is the probabi

lity, to the nearest 10th of a percent, that all three marbles drawn will be blue?

1 answer:

Anettt [7]3 years ago

3 0

Answer:

Step-by-step explanation:

probability of blue : 6/(7+6+3)

=6/16

=3/8

You might be interested in

What is the factor of 5x^2 + 10x

Marat540 [252]

Answer: 5 x 2 − 10 x = 5 x ( x − 2 )

Step-by-step explanation:

5 0

3 years ago

(GIVING BRAINLIEST AND 15 POINTS FOR ANSWER) Solve five and three sixths minus two and one third.

a_sh-v [17]

Answer:

three and three eighteenths

5 3/6 = 33/6

2 1/3 = 7/3 = 14/6

33/6 - 14/6 = 19/6 = 3 1/6 or 3 3/18

5 0

3 years ago

If b is the midpoint of AC, which of the following choices is the value of x?

katrin [286]

If B is the midpoint of AC, that means that the distances from A to B and B to C are the same. The distance from A to B is 8x + 4, and the distance from B to C is 10x - 6, so we can set these two equivalent:

8x + 4 = 10x - 6

Solving for x:

4 = 2x - 6 (subtract 8x from both sides)
10 = 2x (add 6 to both sides)
5 = x (divide both sides by 2)

So, x = 5, which is the second option given.

8 0

4 years ago

Write an equation for an ellipse centered at the origin, which has foci at (0,\pm\sqrt{63})(0,± 63 )left parenthesis, 0, comma

steposvetlana [31]

Answer:

$\frac{x^{2} }{4312 } + \frac{y^{2} }{8281 }$

Step-by-step explanation:

Since the foci are at(0,±c) = (0,±63) and vertices (0,±a) = (0,±91), the major axis is the y- axis. So, we have the equation in the form (with center at the origin) $\frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} }$ .

We find the co-vertices b from b = ±√(a² - c²) where a = 91 and c = 63

b = ±√(a² - c²)

= ±√(91² - 63²)

= ±√(8281 - 3969)

= ±√4312

= ±14√22

So the equation is

$\frac{x^{2} }{(14\sqrt{22}) ^{2} } + \frac{y^{2} }{91^{2} } = \frac{x^{2} }{4312 } + \frac{y^{2} }{8281 }$

8 0

4 years ago

Help with this please free brainlist i promise only if you get it right though

goldenfox [79]

Answer:eirther C or D not sure

Step-by-step explanation:

5 0

3 years ago