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s344n2d4d5 [400]
3 years ago
8

A jar contains six red balls three green balls five white balls and seven yellow balls to balls are chosen from the jar with tha

t with replacement what is the probability that both balls chosen are green
Mathematics
1 answer:
Llana [10]3 years ago
3 0
6+3+5+7= 21 balls total
Choose 2 balls

21C2= 210 total number of ways you could have chosen the two balls

(nCr- n=total, r=choose)

Total green balls= 3

You choose first green ball out of 3

3C1

Then you choose second green ball out of the 2 green balls left

2C1

Multiply these two outcomes

3C1•2C1= 6

Probability=

6/210= 1/35
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400 students are assembled in a square form.How many students are assembled in each now?​
tamaranim1 [39]

Answer:

20

400 is 20 square= 20*20

so  20 students in each row

3 0
3 years ago
What is the value of x?<br> A. 25°<br> B. 50°<br> C. 55°<br> D. 75°<br> E. 80°
Troyanec [42]

Answer:

<h2><em><u>Option</u></em><em><u> </u></em><em><u>B</u></em></h2><h2><em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>50</u></em><em><u>°</u></em><em><u> </u></em></h2>

Step-by-step explanation:

<em><u>By</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>condition</u></em><em><u>, </u></em>

25° + 105° + x = 180° <em>[</em><em>Angle</em><em> </em><em>sum</em><em> </em><em>property</em><em> </em><em>of</em><em> </em><em>triangle</em><em>]</em>

=> 130 + x = 180

=> x = 180 - 130

=> <em><u>x</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>50</u></em><em><u>°</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>

6 0
3 years ago
Read 2 more answers
What is less than 9 or factor of 27<br> ?
sesenic [268]

Answer:

3 is the answer

Step-by-step explanation:

8 0
4 years ago
A)none <br> B)7<br> C)6i<br> D)I-6<br> E) - square of 7<br> ( look at the picture better)
Anika [276]

The correct answer is A). None

Step-by-step explanation:

The given quadratic polynomial has 3 roots and some of roots are x=\sqrt{7} and x=6+i

It is necessary to note that one of the roots is a complex number and root of complex number always in pair of the conjugate to each other.

Since x=6+i

Conjugate of (6+i) is (6-i)

<em>Therefore, (6-i) is 3rd required root of a polynomial </em>

<em>The correct answer is A). None</em>

4 0
4 years ago
Josh plans to spend at most $45 on a gift for his mother, including the $15 he plans to spend on flowers. Which inequality repre
azamat

Answer:

x ≤ $30

Step-by-step explanation:

Including the $15 for flowers, there is a budget of $45. Josh cannot spend more than $30 on a gift.

x can be less than or equal to $30

4 0
3 years ago
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