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4 years ago

-k+3k combined like terms to create an equivalent expression

Mathematics

2 answers:

Murrr4er [49]4 years ago

5 0

Answer:

Step-by-step explanation:

Add:

-k + 3k

-1k + 3k

(You have to add -1 + 3)

Hope this helps :)

trapecia [35]4 years ago

3 0

Answer:

Step-by-step explanation:

-k +3k

Factor out a k

k(-1+3)

k(2)

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Convert <br> [−1,∞) to inequality notation use the variable x.

Trava [24]

Answer:

$-1\leq x$

Step-by-step explanation:

We want to convert the interval [-1, ∞) to inequality notation using <em>x</em> as the variable.

The interval [-1, ∞) reads: "All real numbers between -1 and positive infinity."

In other words, it is all numbers greater than or equal to -1 and less than positive infinity.

Therefore:

$-1\leq x$

Note that we do not use "or equal to" for the infinity as we can never really "equal" infinity.

8 0

3 years ago

Find the equation of the line through point (3,−3) and parallel to y=3x−4. Use a forward slash (i.e. "/") for fractions (e.g. 1/

exis [7]

Answer:

y =3x - 12

Step-by-step explanation:

I'm fairly certain this is the answer.

Consider the point (3,-3). In terms of variables this is written (x,y).

Remember that the equation for slope is y = mx + b.

In that equation, "b" is your y-intercept, and "m" is your slope.

If 2 lines are parallel, they have the same slope but different y-intercepts. So you can use the slope from the equation y=3x-4 to find the parallel line. You can also plug in the values 3 and -3 to solve for b, our y-intercept.

If we set up the equation, we have -3 = 3(3) + b.

Now solve for b.

-3 = 9 + b

Combine like terms, so that -12 = b, and you have your y-intercept.

To create the equation, take out the coordinate pair that the line passes through, and only have the SLOPE and the Y-INTERCEPT showing in the equation.

Therefore, y = 3x - 12

5 0

3 years ago

How to find 8x4 by using Distributive property

joja [24]

4(2x1) ahdnwixkeobej <—- ignore that I just needed to type 20 characters

5 0

4 years ago

Read 2 more answers

What is -2 1/2 + 1 1/3 in fraction form?

olga nikolaevna [1]

$-2\frac{1}{2} +1\frac{1}{3}=\frac{-1}{6}$

Solution:

Given expression is $-2\frac{1}{2} +1\frac{1}{3}$ .

Let us first convert mixed fraction into improper fraction.

$-2\frac{1}{2} +1\frac{1}{3}=\frac{(-2\times 2) +1}{2} +\frac{(1\times 3) + 1}{3}$

$=\frac{-4 +1}{2} +\frac{3 + 1}{3}$

$=\frac{-3}{2} +\frac{4}{3}$

Take LCM for the denominators (LCM of 2, 3 = 6) and make the same.

$=\frac{-3\times3}{2\times3} +\frac{4\times2}{3\times2}$

$=\frac{-9}{6} +\frac{8}{6}$

$=\frac{-1}{6}$

$-2\frac{1}{2} +1\frac{1}{3}=\frac{-1}{6}$

Hence the fraction form of $-2\frac{1}{2} +1\frac{1}{3}$ is $\frac{-1}{6}$ .

5 0

3 years ago

PLEASE HELP I WILL GIVE BAINY LIST TO WHOEVER ANSWERS ALL THE QUESTIONS !!!!!

sergejj [24]

Answer:

1. $97\frac{3}{4}$

2. $3$ x $6\frac{3}{4}$ = $20\frac{1}{4}$

3. $77$ $\frac{1}{2}$

4. Yes (explanation given below)

Step-by-step explanation:

1. Find the area of the wall including the door...

Just multiply the numbers for the width and length.

$11\frac{1}{2}$ x $8\frac{1}{2}$ = $97\frac{3}{4}$

And now, as you can see.

$97\frac{3}{4}$ is our answer for 1.

2. Find the area of the door. (improper fraction)

Again, we just have to multiply, then simplify, and remember to keep it in improper fraction format.

$3$ x $6\frac{3}{4}$ = $20\frac{1}{4}$

so now, we can see that that is the area of the door, but according to the question, we have to leave the answer in the improper fraction format. To turn a mixed number into a improper fraction, we have to multiply the denominator of the fraction with the whole then, add the numerator, the answer that we get is going to be the numerator of the improper fraction and the denominator remains the same.

20 1/4 = 81/4 (improper fraction)

So, 81/4 is our answer for 2.

3. Without door space, give how much wall area there is. (mixed number)

So, as we already know that the door covers up 20 $\frac{1}{4}$ , so all what we have to do is, take the area of the Whole wall and door and subtract it by the door area.

WHOLE wall = 97 $\frac{3}{4}$

Door only = 20 $\frac{1}{4}$

$97\frac{3}{4}-20\frac{1}{4} = 77\frac{1}{2}$

So, hence, the answer for 3. is 77 $\frac{1}{2}$

4. Does Amelia have enough paint? Explain...

Yes, amelia has enough paint for covering the whole intire wall because she has enough paint for a 100 square feet, and the actual surfact area of her wall is JUST 97 3/4 square feet. So, she definitely has enough paint to cover that wall and door.

Thank You! Please mark me brainliest so that I get encouraged to make more great answers like this one!

5 0

2 years ago

Read 2 more answers