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frutty [35]
3 years ago
7

A box contains 8 red marbles, nine blue marbles and 11 yellow marbles. what is the probability that a marble chosen randomly fro

m the box is blue? LEAVE ANSWER AS A FRACTION.
Mathematics
2 answers:
NemiM [27]3 years ago
7 0

Answer:

9/28

Step-by-step explanation: you put the amout of blue marbles over the total marbels

olga55 [171]3 years ago
3 0

Answer:

31%

Step-by-step explanation:

the sum total of all marbles at the beginning is 8+(9+9)=26

the probability of picking a red marble at this point is p(1)=(8/26)

now 25 marbles remain, the distribution is now 8+17=25

the probability of picking a red marble at this point is p(2)=(8/25)

now 24 marbles remain, the distribution is now 8+16=24

the probability of picking a red marble at this point is p(3)=(8/24)

it follows that the remaining probabilities are for "not picking a red marble".

these probabilities are 1-p([1;2;3]).

Probabilities are multiplicative.

The probability for 3 consecutive non-red draws is then given by:

(1-8/26)*(1-8/25)*(1-8/24) = 103/325 | that's roughly 31%

not 100% sure!

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vova2212 [387]

Answer:

16x16+14−99x8

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Step-by-step explanation:

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Width = 24 yards
Length = 24 x 5 = 120 yards

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3 years ago
Brittany has a gift box in the shape of a cube. Each side of the box measures 15 cm. what is the volume of the gift box?
miss Akunina [59]
The formula for the volume of a cube is:

v=s³

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There are 3 feet in 1 yard. How many feet are in 25 yards?
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5 0
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What is the area of parallelogram rstu? 21 square units 24 square units 28 square units 32 square units
Ray Of Light [21]

The area of the considered parallelogram RTSU is given by: Option A: 21 sq. units

<h3>How to find the area of a parallelogram?</h3>

Area of a parallelogram  = (its height × its base) sq. units.

<h3>What is the distance between two points ( p,q) and (x,y)?</h3>

The shortest distance(length of the straight line segment's length connecting both given points) between points ( p,q) and (x,y) is:

D = \sqrt{(x-p)^2 + (y-q)^2} \: \rm units

For this case, the missing diagram is attached below.

If we take the base as ST then as ST is parallel to y axis, the line perpendicular to ST would be parallel to x axis. The heigth of a parallogram  is the perpendicular distance between its base and top.

The base is ST and top is RU, the line segment US is perpendicular to both RU and US and its length,therefore, will serve as height as its length=perpendicular distance between the base and the top of the parallelogram.

Thus, we get:

Area of RTSU = Length of ST × Length of US

The coordinates of endpoints of ST are (4,-1), (4,-4)

Thus, the length of ST = distance between S and T = \sqrt{(4-4)^2 + (-1 - (-4))^2 }= 3

The coordinates of endpoints of US are (-3,-1), (4,-1)

Thus, the length of US = distance between U and S = \sqrt{(-3-4)^2 + (-1 - (-1))^2 }= 7

Thus, Area of RTSU = Length of ST × Length of US = 3 × 7 = 21 sq. units.

Thus, the area of the considered parallelogram RTSU is given by: Option A: 21 sq. units

Learn more about distance between two points here:

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2 years ago
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