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MrRa [10]
3 years ago
11

I need help in this section please!!

Mathematics
1 answer:
MrRissso [65]3 years ago
7 0

Answer:

\frac{1}{25}

Step-by-step explanation:

Probability of first yellow ball=\frac{total\ yellow\ ball}{Total\ ball}=\frac{2}{10}=\frac{1}{5}

Since first ball is again placed in the bag

Probability of second yellow ball=\frac{total\ yellow\ ball}{Total\ ball}=\frac{2}{10}=\frac{1}{5}

These two are independent events so the probability of both yellow balls==\frac{1}{5} \times \frac{1}{5} =\frac{1}{25}

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Harrizon [31]
Amanda could’ve ate 1/4 and Lauren could’ve ate 3/4. I hope this helps!
6 0
3 years ago
If n-8=-10 what is n
andrew11 [14]

Answer:

n=-2

Step-by-step explanation:

You do the reverse of -8 which is +8. -10+8=-2. n=-2

6 0
3 years ago
Read 2 more answers
Which shows all the exact solutions of sin^2 x + 3cos x - 1 = 2?
Zarrin [17]

Answer:

x = 2k\pi is the solution of this equation.

Step-by-step explanation:

This question is related to trigonometric equations.

The given equation is,

sin^{2} x + 3cos x - 1 = 2

We have to find the solutions of this equation.

Put sin^{2}x  = 1 - cos^{2}x

1 - cos^{2}x + 3cosx - 1 = 2

cos^{2}x -3cosx+2 = 0

For this equation only cosx = 1 is possible solution.

Cosx = 1 happens when x is a multiple of 2\pi

So x = 2k\pi is the solution of this equation.

3 0
3 years ago
Can SOmeone please help me i need to get a good grade on this please!!!!!!
Rudik [331]

Answer:

20 Units

Step-by-step explanation:

Hight times length/by half is tribular prism Formula

3 0
3 years ago
What is the solution to 2sin^(2)x+sinx+1=0
Alexus [3.1K]
Well you can try rewriting it to this

answer is   d  270

first start of by factoring  and subtracting the 1 into the right side

sin(x)  ( 2 sin (x)  + 1)  = -1  

set each one equal to -1 

sin( x) = -1   and   2 sin (x) +1 =  -1 

                              2 sin (x) = -2
                               sin ( x) = -1 
so therefore we have our final equation

sin ( x )  = - 1  and sin (x) = -1 

so then you look in your unit circle and find what coordinate equals -1 in terms of sin x 

3 0
4 years ago
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