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Kobotan [32]
2 years ago
9

A teacher will pick 1 student at random from 25 for the lead in a play. What is the probability of a student, Jo, of winning?

Mathematics
2 answers:
morpeh [17]2 years ago
7 0
Twenty two is the answer
CaHeK987 [17]2 years ago
6 0
Twenty two percent is the answer
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<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7B9x%7D%5E%7B2%7D%20-%20%7B%28x%7D%5E%7B2%7D%20-%204%29%20%7B%7D%5E%7B2%7D%20
Alenkinab [10]

Answer:

{ x^2+3x-4}

Step-by-step explanation:

Factor top and bottom.

The numerator is a difference of two squares, and the denominator is a quadratic.

\frac{ {9x}^{2} - {(x}^{2} - 4)^{2} }{4 + 3x - {x}^{2} }

= \frac{ (3x+x^2-4)(3x-x^2+4) }{(1+x)(4-x)}

= \frac{ (x-1)(x+4) (1+x)(4-x) }{(1+x)(4-x)}

If x does not equal -1 and does not equal 4, we can cancel the common factors in italics to give

= { (x-1)(x+4)}

= { x^2+3x-4}

3 0
2 years ago
Read 2 more answers
What is the 9th term of (2x+3)^10<br><br><br> PLEASEEEEEEE ANSWERRRRR
Bond [772]

Answer:

1.668x10^13

Step-by-step explanation:

5 0
3 years ago
Hi please help me I'm in the middle of a test and I don't want to get grounded
lawyer [7]

Answer:

8(3j-2)

Step-by-step explanation:

4 0
2 years ago
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HELP me. I will rate 5 stars.
kaheart [24]

Answer:i would help but the picture is tooooo blurry

Step-by-step explanation:

7 0
3 years ago
Solve the following system of equations:<br> 4x+5y=23<br> -3x-7y=-14
Korvikt [17]
Basically you're solving for both variables here.
I prefer elimination method so that is what I used.
I started off by multiplying each equation in order to get one of the variables at the same value so it would be possible to cancel it out.
Multiplying the first equation by 3 gave me,
12x + 15y = 69
Then I multiplied the second equation by 4,
-12x + 28y = -56
As you can see, it's not possible to cancel out the x variable.
12x + 15y = 69
+(-12x + 28y = -56)
_____________
13y = 13
Then just solve for y which gives you -1.
After you have one variable solved simply insert it into one of the original equations to find the other variable.
4x + 5(-1) = 23
4x - 5 = 23
4x = 28
x = 7.
And there you have it! Hope this helped!

5 0
3 years ago
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