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vodomira [7]
3 years ago
5

Mary has 3 red marbles and 7 yellow marbles in a bag. What is the probability of she draw 3 marbles at the same time, all of the

m are red marbles?
Mathematics
1 answer:
LenaWriter [7]3 years ago
3 0
The probability would be 3/10 or 30%
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PYTHAGOREAN THEOREM IN 3D URGENT PLEASE PHOTO INSERTED
Andrews [41]

To find the length of the diagonal, we need to calculate the length of the base first and then use the value to calculate the diagonal since we are given the value of height of the triangle.

<h3>Pythagorean Theorem</h3>

This theorem is used to find the missing side of a right angle triangle given that we have the length of two sides.

To calculate the base of the triangle, let's use Pythagorean theorem here

x^2 = y^2 + z^2\\x^2 = 2^2 + 3^2\\x^2 = 4 + 9 \\x^2 = 13\\x = \sqrt{13} \\x = 3.61

Having the length of the base, let's consider the height of the triangle which is 6 and substitute the values.

d^2 = 6^2 + 3.61^2\\d^2 = 36 + 13.0321\\d^2 = 49.0321\\d = \sqrt{49.0321} \\d = 7.00

From the calculations above, the values of the triangle are

  • diagonal = 7
  • base = 3.61
  • height = 6

Learn more on pythagorean theorem here;

brainly.com/question/231802

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7 0
2 years ago
Solve for px thanks
koban [17]
Px + 12 = 17
px = 5
x = 5/p

ans) D
6 0
3 years ago
Read 2 more answers
Plsss help no spam.<br><br><br><br>.....................​
gregori [183]

Answer:

Third one.

x=6 y=12

Ok!

7 0
3 years ago
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Jacqueline has $5.65 in nickels and quarters. If she has 45 coins in all, how many nickels does she have?
Semenov [28]

Answer:

28 Nickels

Step-by-step explanation:

5 0
3 years ago
PLEASE HELP!! WILL AWARD BRAINLIST TO WHOEVER HAS ALL THE CORRECT CALCULATIONS!
Gekata [30.6K]

Law of cosine:

c² = a² +b² -2ab*cosC.

Because the triangle is equilateral a=b=c=x,

and we can write,

x²=x² +x² -2xx*cosC

x² =2x² -2x²* cos C

-x² = -2x²*cos C

cos C= 1/2,

so m∠C=60⁰.

Because all sides are equal, and across of the equal sides should be equal angles, all angles will be also equal and = 60⁰.

8 0
3 years ago
Read 2 more answers
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