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Sati [7]
3 years ago
15

A box contains 10 red marbles, 13 blue marbles, 6 green marbles and 7 white

Mathematics
2 answers:
Zarrin [17]3 years ago
7 0

Answer:

Total number of marbles = 10+20+30 = 60 out of which 20 are blue.

Probability of first marble being blue = 20/60

Probability of second marble being blue = 19/59

Probability of third marble being blue = 18/58

Probability of fourth marble being blue = 17/57

Probability of fifth marble being blue = 16/56

So probability of all marble being blue when five marbles are drawn from the box = (20/60)*(19/59)*(18/58)*(17/57)*(16/56) = 34/11977 = 0.00283877432

Step-by-step explanation:

Vaselesa [24]3 years ago
5 0
ANSWER: 10/36 or simplified to 5/18

explanation:

step 1: add all of the marbles together, you should get 36 marbles

step 2: now take your 36 and your 10 red marbles and convert that into a fraction, you should get 10/36

step 3: [only do this step of you need to simplify your fraction!] find a common denominator (a number that can be divided by both numbers in the fraction) and divide both numbers by the common denominator until you no longer can. 10 and 36 are both divideable by 2. After dividing, you should get 5/18. since 5 and 18 don't have any common denominators, you're done simplifying!

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. The area of a right triangle is 30 ft2. The base of the triangle is 12 ft. What is the length of the hypotenuse? Show
fgiga [73]

Answer:

The height is 5ft

Step-by-step explanation:

We know the area is 30ft^2 and the base is 12 ft.

Plug that information in the formula for the area of a triangle,

Formula for area of a triangle:

A = (1/2)bh  (area is one half of the product of    the base and height)

The question gives us A = 30, and b = 12.  We can plug them in and find h

30 = (1/2)(12)h

Now solve for h

  30 = 6h         (1/2)(12) means '12 times one half' or 'half of 12' which is 6

  5 = h              (30 divided by 6 is equal to 5)

5 0
4 years ago
38. The volume of a cylinder is 97 ft3. If the dimensions are doubled, what will be the new volume?
asambeis [7]

Volume is cubed. If the dimensions are doubled, cube the scale factor:

2^3 = 8

The volume will increase by a scale of 8.

The new volume would be 97 x 8 = 776 ft^3

8 0
4 years ago
Myles has a room that is 300 m². If he wants to tile the room using 5 cm x 5 cm tiles, how many whole tiles will he have to use?
amid [387]

Answer:

Number of whole tiles need = 120,000 tiles

Step-by-step explanation:

Given:

Area of room = 300 m²

Dimension of each tile = 5cm x 5cm

Find:

Number of whole tiles need

Computation:

Dimension of tile in meter = 5 /100 = 0.05 m

Area of each tile = 0.05 x 0.05

Area of each tile = 0.0025 m²

Number of whole tiles need = Area of room / Area of each tile

Number of whole tiles need = 300 / 0.0025

Number of whole tiles need = 120,000 tiles

Total 120,000 tiles need to cover 300 m² room.

3 0
3 years ago
Please show your work
Vikentia [17]

next time, include pictures so people know what the other values of the problem is

5 0
3 years ago
2. Find the circumference of a circle if the area is 300 square centimeters. A. 84.74 cm B. 9.77 cm C. 61.38 cm D. 56.25 cm
Vadim26 [7]
The circumference of the circle is C. 61.38 cm
3 0
3 years ago
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