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3 years ago

Please help with these functions, provide work as well please :(

Mathematics

1 answer:

Strike441 [17]3 years ago

8 0

Please be specific about the kind of help you want. Ideally you'd do all the work you can and then stop and ask questions whose answers might help you move forward again. Graph the function f(x)=2x+4. This is the equation of a straight line with slope 2 and y-intercept 4. What help do you need in doing this? What help do you need beyond this?

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Select the correct answer.

adoni [48]

The correct answer is b) 2

8 0

4 years ago

Four times two less than a number is the same as thrice one more than the number. Find the number.

IgorLugansk [536]

Answer:

See below:

Step-by-step explanation:

We can first setup an equation by doing the following:

$4(2-x) = 3(x+1)\\8-4x=3x+3\\8-7x=3\\-7x=3-8\\-7x=-5\\x=-5/-7 (5/7)$

Whole proccess above!

If you would like an explanation, please let me know so.

Its basically algebra and it's mainly on how you interpret it!

Have a nice day!

5 0

2 years ago

3r + 7 = -8 what does r =

jekas [21]

Answer: R = -5

Step-by-step explanation: 3r + 7= -8 is turned into 3(-5) + 7= 8. -15 + 7=8

4 0

3 years ago

-1/3x+2x=3 3/4 what does the variable represent?

svet-max [94.6K]

Start off by combining like terms on the LHS (the terms with x in them).

So we get $\frac{-1}{3}x+2x= \frac{-1}{3}x+ \frac{6}{3}x= \frac{-5}{3}x$

Replacing this result with what we had before on the LHS, we get $\frac{-5}{3}x=3 \frac{3}{4}= \frac{9}{4}$

⇒Solve for x (divide both sides $\frac{-5}{3}$ )
⇒Don't forget about reciprocity rules when dividing. This is the same as multiplying both sides by $\frac{3}{-5}$

⇒ $x= \frac{9}{4}( \frac{3}{-5})
$
⇒ $x= -\frac{27}{20}=-1\frac{7}{20}$ ***This is a proper fraction

4 0

3 years ago

Read 2 more answers

30.5 $ with a 5% tax rate

Vlad [161]

Answer:

$32.03

Step-by-step explanation:

Since there is a tax rate, you want to multiply $30.50 by 1.05 since you are adding tax to it and it is 5%. You should get 32.025 as the result, but since you need to round it, it is $32.03.

4 0

3 years ago