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Stella [2.4K]
3 years ago
7

You have in the class 11 boys and 8 girls. You also have 3 seniors, 4 juniors, and 12 sophomores. If you select a student at ran

dom, what is the probability you select a boy *
1 point
11/38
7/11
11/19
19/11
Mathematics
1 answer:
Daniel [21]3 years ago
5 0

Answer:

38

Step-by-step explanation:

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Please could you explain this step by step I’m really stuck.
allochka39001 [22]

Answer:

x = -2.5
x = 2

Step-by-step explanation:

Hello!

We can remove the denominators by multiplying everything by it.

Solve:

  • \frac{5}{x + 3} + \frac4{x + 2} = 2
  • 5 + \frac{4(x + 3)}{x + 2} = 2(x + 3)
  • 5 + \frac{4x + 12}{x + 2} = 2x + 6
  • 5(x + 2) +4x + 12 = (2x + 6)(x + 2)
  • 5x + 10 + 4x + 12 = 2x^2 + 6x + 4x + 12
  • 9x + 22 = 2x^2 + 10x + 12

Let's make one side equal to 0.

  • 0 = 2x^2 + x - 10

Solve by factoring, and then the zero product property.

  • 0 = 2x^2 + x - 10\\

Multiply 2 and -10. You get -20. Think of two number that multiply to -20, and add to 1. If we think about the standard form of a quadratic, ax^2 + bx + c, think two numbers that equal "ac" and add up to "b".

  • 0 = 2x^2 - 4x + 5x - 10
  • 0 = 2x(x - 2) + 5(x - 2)
  • 0 = (2x + 5)(x - 2)

Using the zero product property, set each factor to 0 and solve for x.

  1. 2x + 5 = 0
    2x = -5
    x = -5/2 = -2.5
  2. x - 2 = 0
    x = 2

The two answers are x = -2.5, and x = 2.

3 0
2 years ago
Read 2 more answers
Round 12.5478 to the nearest hundredth's
sp2606 [1]

Answer:

I'm pretty sure it's 12.55

Step-by-step explanation:

4 0
2 years ago
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What is the equation, of the perpendicular to y= 1/8x + 2, , passing through the point (1,-5)?
BARSIC [14]

Answer:

yes passing is the best thing to do so you can get a job

Step-by-step explanation:

7 0
3 years ago
A text font fits 12 characters per inch. Using the same font, how many characters can be expected per yard of text?
Radda [10]
The answer is 432 characters
8 0
3 years ago
M=2 A= M+1 T=8 H=T-A MATH=
goldenfox [79]
288 is your answer


Hope this helps :) have a good day
5 0
3 years ago
Read 2 more answers
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