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3 years ago

If x / y is an integer, which of the following statements must be true?

1 answer:

5 0

Only E) is true. If I were to arbitrarily pick x = 2.2 and y =1.1, then I could show that A), B), C), and D) to be false, given x/y = 2.2/1.1 = 2 (which is an integer). However for E), if we define x/y = n where n is an integer, then by rearranging terms, we can show x = n*y where n still equals an integer and our original equation is still valid.

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Find five solutions for the linear equations 2x+y=5, and plot the solutions as points on a coordinate plane. Did i do this right

beks73 [17]

For the second row i think it should be 2 + y = 5 because 2 x 1 equals 2

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2 years ago

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3 years ago

Solve the quadratic equation 4x2 − 121 = 0. Verify your answer using a difference-of-squares factoring method.

Alenkasestr [34]

Answer:

Option d) is correct

That is x equals plus or minus start fraction 11 over two end fraction

Step-by-step explanation:

Given quadratic equation is $4x^2-121=0$

To write the given quadratic equation by using a difference-of-squares factoring method:

$4x^2-121=0$

The above equation can be written as

$4x^2-11^2=0$

$(2x)^2-11^2=0$

The above equation is in the form of difference-of-squares

Therefore the given quadratic equation can be written in the form of difference-of-squares

by factoring method is $(2x)^2-11^2=0$

$(2x+11)(2x-11)=0$ (which is in the form $a^2-b^2=(a+b)(a-b)$ )

2x+11=0 or 2x-11=0

$x=\frac{-11}{2}$ or $2x=11$

$x=\frac{-11}{2}$ or $x=\frac{11}{2}$

$x=\pm \frac{11}{2}$

Therefore option d) is correct

That is x equals plus or minus start fraction 11 over two end fraction

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2 years ago

I will mark brainliest for correct answer

statuscvo [17]

24, it’s the lcf and is the closest number that they have in common

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2 years ago

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Im really confused! How do i figure out this problem:

EleoNora [17]

Okay, so let's start by setting up this problem:
(original number=x)(percentage=.06)=(percentage of original number)
So it should look like this:
(x)(.06)=51 Now we should divide .06 from each side
x=850 And there we go! 850 is the answer.
i hope this help

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2 years ago

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