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yawa3891 [41]
3 years ago
14

A bag contains 6 red marbles, 4 black marbles, 10 green marbles, and 2 blue marbles. Marbles are taken at random from the bag, o

ne at a time, and then replaced. Find the probability of drawing a black marble, then drawing a green marble.
A 2/11
B 7/11
c 10/121
d 20/231​
Mathematics
1 answer:
Inga [223]3 years ago
4 0

Answer:

B

Step-by-step explanation:

First you will add them all up

6+4+10+2=22

Second find the black and green amount and add them together

4+10=14

Thirdly turn this into a fraction

14/22

Lastly simplify

14/11 / 2 = 7/11

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To form 3 adjacent squares (as in the figure), 10 toothpicks are required. How many toothpicks are required to form 100 adjacent
Sonja [21]
<span>Let's say in general you want "n" adjacent squares. Each one needs a top, so that's n toothpicks. Each one needs a bottom, so that's another n toothpicks, and we're up to 2n total. You need one on the far left, and one on the far right, which brings us up to 2n + 2 toothpicks. Now we need to worry about the middle ones. But notice that you don't need n toothpicks for the interior because adjacent squares share. It turns out that you only need n-1. That brings us up to a grand total of 3n + 1 toothpicks, which would be 301 for n = 100.


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
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7 0
2 years ago
The volume of a single layer in a rectangular prism is 18 cubic centimeters. There are 5 layers in this rectangular prism. What
sweet [91]

Answer: 90cm^3

Step-by-step explanation:

A rectangular prism is a three-dimensional solid.

A rectangular prism has six faces (each one of these faces are rectangles), eight vertices and twelve edges.

You know that this rectangular prism has 5 layers and the volume of one of these layers is 18 cubic centimeters (18cm^3).

Assuming that all these layers are equal, the volume of this rectangular prism can be calculated with:

V_{prism}=5*V_1

Where V_1 is the volume of one layer.

Substituting, you get:

V_{prism}=(5)(18cm^3)\\\\V_{prism}=90cm^3

8 0
3 years ago
After a 15% reduction, the sale price of a car is £13175. What was the
OlgaM077 [116]

Answer:

<u>The original price of the car was 11198.75</u>

Step-by-step explanation:

Hope it helps!

6 0
1 year ago
The “prize” discovery at the Nansen Crater was olivine. What valuable information did NASA learn from this sample?
Ghella [55]

Answer:

1. One valuable information NASA learnt from the sample of olivine is that some parts of Mars had been dry over a long period of time.

2. The two materials are:

i. Oxygen supply.

ii. Air temperature and pressure regulation.

Step-by-step explanation:

NASA went on a research mission on mars and observed the Nansen crater, and discovered the olivine in the crater. It was learnt from the sample of olivine that parts of Mars had been dry over a long period of time.

2. The Personal Life Support System is a part of the suit used by astronauts to create an artificial habitat condition for their body system. This suit contains some materials that preserve their lives in space. The major materials in the suit are; oxygen (for breathing purpose) and air temperature and pressure regulation.

3 0
2 years ago
3(x-2) write in a word ​
lina2011 [118]

Answer:

3x-6

Step-by-step explanation:

Thats the answer. .

3 0
3 years ago
Read 2 more answers
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