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pantera1 [17]
3 years ago
12

Kyle has a bag of red, green, and blue marbles. He asks Linda to draw a marble without looking in the bag, record its color, and

replace it. She draws 20 times with these results: 7 red marbles, 9 green marbles, and 4 blue marbles. What is the experimental probability of drawing a red marble? Write your answer as a fraction (in simplest form), decimal, and percent. Fraction: Decimal: Percent:
Mathematics
1 answer:
pickupchik [31]3 years ago
8 0

Answer: red marble 7 out of 20 : 7/20 : 0.35: 35%

Step-by-step explanation:

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4 martians, 3 plutonians and 5 jupiterians are to be seated in a row at an interplanetary conference. How many seating arrangeme
Rudik [331]

we are given

martians =4

plutonians =3

jupiterians=5

so, total number of seats =4+3+5=12

number of seating arrangement for martians is 4!

number of seating arrangement for plutonians is 3!

number of seating arrangement for jupiterians is 5!

total number of seating arrangement is 12!

so, we get

possible seating arrangements are

=\frac{12!}{4!3!5!}

=27720.............Answer

8 0
3 years ago
Please help calculate the total surface area​. Thanks
Gnoma [55]

Answer: 70cm³

EXPLANATION:

1/2 x base x height x 2 (this is to find the surface area of one of the triangular faces since the other side of the triangular shape has the same measurements you should multiply it by 2 straight away since it makes it easier for you)

1/2 x base x height x 2

1/2 x 3 x 3 x 2 ← <em>(to get the height of the triangle substract 7 from 10)</em>

1/2 x 18 ←<em> (multiply 3x3x2=18) </em>

9cm³  ←<em>(since 18 is 2x9 your answer is 9cm³)</em>

<em></em>

1/2 x base x height x 2 (this is to find the surface area of the other triangular face with different measurements and since the other side of the triangular shape has the same measurements you should multiply it by 2 straight away since it makes it easier for you)

1/2 x base x height x 2

1/2 x 4 x 3 x 2 ← <em>(to get the height of the triangle substract 7 from 10)</em>

1/2 x 24 ←<em> (multiply 4x3x2=24) </em>

12cm³  ←<em>(since 24 is 2x12 so your answer is 12cm³)</em>

<em></em>

Then next you have to find the surface area of one face of the rectangle and multiply it by 2 since the back side of the rectangle has the exact same measurements. The formula to find the area of a rectangle is area= length x breath

A= 3x7= 21cm³

then find the area of the other rectangular face with different measurements and multiply it by 2 since the back side of the rectangle has the exact same measurements. The formula to find the area of a rectangle is area= length x breath

A= 4x7= 28cm³

<u>FINALLY</u>

add all the areas of the faces you have found and you'll get the total surface area!

<u>9+12+21+28=70cm³</u>

Thank you! I hope you understood something and I hope you have a great day! good luck!

3 0
2 years ago
Help with this word problem
denis23 [38]
I believe the answer is Diane brought 4 pounds of coffee.
6 0
3 years ago
Match these items match the items in the left column to the items in the right column
Setler [38]
1) Base
2) Exponent
3) Metric system
5 0
3 years ago
Mary bought a handbag for 15.00naira. if she sold it for 18.00,what was her percentage gain?​
melomori [17]

Answer:

total profit gained = 20%

Step-by-step explanation:

profit = SP - CP = 18 - 15 = 3 naira

total profit percentage =

  • ( profit / CP ) × 100
  • 3 / 15 × 100
  • 20%

hence her total percentage gain was 20%

8 0
3 years ago
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