Can anyone help mewith this probability question.

Mathematics

1 answer:

Brrunno [24]2 years ago

6 0

Answer:

It's 0.72

Step-by-step explanation:

It's independent of gender, so we can ignore the boys and girls part.

Adding the columns, 18 pass and 7 failed the last history test.

Adding those two numbers, you get 25.

So, 25 people took the test, and 18 passed.

You can get the probability by dividing 18 by 25.

Dividing that gives us 0.72

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I need help on this what is RS

lana [24]

Answer:

Step-by-step explanation:

If RS=TV

5x-9=2x+3

5x-2x=3+9

3x=12

x=4

RS is 5x-9

5(4)-9

20-9

6 0

2 years ago

I don’t remember how I get the answer to this. I have the answer key though. Please help, I have a test in an hour

mrs_skeptik [129]

Answer:

f(x) = (x -2)(x -1+3i)(x -1-3i)

Step-by-step explanation:

You can use synthetic division to find the remaining quadratic factor in the cubic. Then any of the usual means of solving the quadratic will help you find its linear factors.

In the attached, I show the synthetic division, the factoring to real numbers, and the solution that finds the complex linear factors by completing the square.

Of course, you know that for zeros a, b, and c, the linear factors are ...

f(x) = (x -a)(x -b)(x -c)

Here, we have a=2, b=1-3i, c=1+3i.

f(x) = (x -2)(x -1+3i)(x -1-3i)