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LiRa [457]
1 year ago
7

X2 - x - 42 a=? b=? C=? help me ​

Mathematics
1 answer:
lisabon 2012 [21]1 year ago
6 0

Step-by-step explanation:

thr standard form for a quadratic equation is:

ax²+bx+c

in this example, a=1, b=(-1), c=(-42)

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What is product of x/3 and 6/x when x=0 ? <br>A.2 <br>B.18 <br>C.2/x^2<br> D.18/x^2
Ahat [919]

Answer:

A) But if anyone thinks this they should go back to preschool

Step-by-step explanation:

On any other value of x you would take the numerators and denominators and multiply them across:

\frac{x}{3}*\frac{6}{x}=\frac{x*6}{x*3}=\frac{6}{3} =2

But, this literally does not make since considering the fact that you cannot divide any value by zero. Try it, it won't work. If we plug these into a trusty dusty calculator, we get this:

\frac{0}{3}=0\\\\\frac{6}{0}=DOMAINERROR

0*DOMAINERROR= You can't do it.

There are other reasons why you can't divide by zero, I would suggest looking them up on YT and learning about them.

I would answer A, but the person who wrote this question just wasn't focusing when they wrote the question.

4 0
3 years ago
Identify all number sets to which the square root of 25 belongs to.
const2013 [10]

Answer:

SOLUTION: Explain why the square root of 25 belongs to 4 subsets of the real numbers , but the square root of 5 only belongs to 1 . tell which subsets each belong to and why .

Step-by-step explanation:

The square root of 25 is 5, which  

1. A rational number, since 5 is the ratio of the two integers 5 and 1.

2. An integer since 5 is an element of {...,-3,-2,-1,0,1,2,3,.}  

3. A whole number, since 5 is an element of {0,1,2,3.}

4. A counting number, since 5 is an element of {1,2,3,}

The square root of 5 is only  

1. An irrational number, since it is not the ratio of any two integers.

[It can only be approximated by

this nonrepeating infinite decimal, it goes on forever:

2.2360679774997896964091736687312762354406183596115257...]

4 0
2 years ago
Which bigger 0.80 or 0.08
nekit [7.7K]
0.80 because when you line up the decimals 0.80 is bigger

0.80
0.08
4 0
3 years ago
Read 2 more answers
Same test, similar question! please help!
soldier1979 [14.2K]

Answer:

Idg

Step-by-step explanation:

Please Explain in the comments

7 0
3 years ago
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Write the number 0.5 in the form a/b using integers to show that it is a rational number
LekaFEV [45]
0.5 = \frac{5}{10} =  \frac{1}{2}
5 0
2 years ago
Read 2 more answers
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