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3 years ago

How do you solve for X

Mathematics

1 answer:

spin [16.1K]3 years ago

8 0

Example: x − 2 = 4

When we put 6 in place of x we get:

6 − 2 = 4

which is true

So x = 6 is a solution.

How about other values for x ?

For x=5 we get "5−2=4" which is not true, so x=5 is not a solution.For x=9 we get "9−2=4" which is not true, so x=9 is not a solution.etc

In this case x = 6 is the only solution

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Is 11/16 bigger than 3/4

Goryan [66]

No 3/4 is bigger

if you multiply the top and bottom of 3/4 by 4, you get 12/16.

11/16 <12/16

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3 years ago

In indirect variation if y = 5 and x = 10, what is the value of k (the constant)?

Andre45 [30]

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3 years ago

suppose that a number written as a decimal has an infinite number of non- repeating digits after the decimal point. What is this

faltersainse [42]

Answer: Irrational number

If the decimal digits repeat forever, then the repeating decimal is considered rational.

For instance, 2/99 = 0.020202020202... where the "02" repeats forever

If we don't have such a pattern, then we cannot write the decimal as a fraction of two integers and the number is not rational. So it is irrational.

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3 years ago

The function y = x 2 - 10x + 31 has a ____

katrin [286]

Answer:

Option B. minimum is correct for the first blank

Option C. 6 is correct for second blank.

Step-by-step explanation:

In order to find the maxima or minima of a function, we have to take the first derivative and then put it equal to zero to find the critical values.

Given function is:

$f(x) = x^2-10x+31$

Taking first derivative

$f'(x) = 2x-10$

Now the first derivative has to be put equal to zero to find the critical value

$2x-10 = 0\\2x = 10\\x = \frac{10}{2} = 5$

The function has only one critical value which is 5.

Taking 2nd derivative

$f''(x) =2$

$f''(5) = 2$

As the value of 2nd derivative is positive for the critical value 5, this means that the function has a minimum value at x = 5

The value can be found out by putting x=5 in the function

$f(5) = (5)^2-10(5)+31\\=25-50+31\\=6$

Hence,

The function y = x 2 - 10x + 31 has a minimum value of 6

Hence,

Option B. minimum is correct for the first blank

Option C. 6 is correct for second blank.

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3 years ago

you put the names of all the students in your class in a paper bag. there are 15 boys and 11 girls. if you drawa name at random

rosijanka [135]

There is a 15/26 chance that it will be a boy

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3 years ago