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3 years ago

Please hurry I will mark you brainliest

Mathematics

2 answers:

devlian [24]3 years ago

8 0

Answer: -3x+y=-4

Step-by-step explanation:

Standard form is Ax+By=C. In y=Mx+b form, it would be y=3x-4. To put it into standard form you subtract 3x from both sides. So then you have -3x+y=-4.

jasenka [17]3 years ago

4 0

See the photo for details and answer.

Hope this helps! Please make me the brainliest, it’s not necessary but appreciated, I put a lot of effort and research into my answers. Have a good day, stay safe and stay healthy.

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Determine whether each is rational or not rational?

Free_Kalibri [48]

B and C are both rational numbers

hope that this helped hon :)

6 0

4 years ago

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Which of the following is an odd function?

Komok [63]

Given:

$f(x)=x^{3}+5 x^{2}+x$

$f(x)=\sqrt{x}$

$f(x)=x^{2}+x$

$f(x)=-x$

To find:

The odd function.

Solution:

If f(-x) = -f(x), then the function is odd.

If f(-x) = f(x), then the function is even.

Option A: $f(x)=x^{3}+5 x^{2}+x$

Substitute x = -x

$f(-x)=(-x)^{3}+5 (-x)^{2}+(-x)$

$=-x^3+5x^2-x$

$=-(x^3-5x^2+x)$

≠ - f(x)

It is not odd function.

Option B: $f(x)=\sqrt{x}$

Substitute x = -x

$f(-x)=\sqrt{-x}$

$=\sqrt{x} i$ (Since $\sqrt{-1} =i$ )

≠ - f(x)

It is not odd function.

Option C: $f(x)=x^{2}+x$

Substitute x = -x

$f(-x)=(-x)^{2}+(-x)$

$=x^2-x$

$=-(-x^2+x)$

≠ - f(x)

It is not odd function.

Option D: $f(x)=-x$

Substitute x = -x

$f(-x)=-(-x)$

$=-f(x)$

It is odd function.

Therefore, f(x) = -x is an odd function.

5 0

3 years ago

Find X: tangent, cosine or sine?

Gnom [1K]

Answer:

x ≈ 2.76

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan78° = $\frac{opposite}{adjacent}$ = $\frac{AB}{BC}$ = $\frac{13}{x}$ ( multiply both sides by x )

x × tan78° = 13 ( divide both sides by tan78° )

x = $\frac{13}{tan78}$ ≈ 2.76 ( to 2 dec. places )

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2 years ago

Four friends go out to lunch and decide to split the bill evenly. The bill comes to $48.20. How much does each person owe?

jeka94

Four friends go out to lunch and they agree to split the bill evenly.
so now you have to divide the price by 4 because there's four people.
$48.20. / 4.
so your answer is $12.05 that's so much each person will pay for their share of bill.

8 0

3 years ago

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HELP PLS ITS ALGEBRA 1

Georgia [21]

Answer:

$- \frac{2}{6}$