All categories

3 years ago

There are two approaches to solving the equation -3x + 10 = 4x - 20

Mathematics

2 answers:

rosijanka [135]3 years ago

7 0

Answer:

You can take this equation into two approaches.

#1 subtracting 4x from both sides:

-3x+10=4x-20 (subtract 4x from each side)

-7x+10=-20 (then subtract 10 from each side)

-7x=-30 (then divide by -7 to get x by itself)

x=30/7

#2 Add 3x to both sides:

-3x+10=4x-20 (Add 3x to both sides)

10=7x-20 (then add 20 to each side)

30=7x (divide both sides by 7)

30/7=x

Either way you do it you will get x=30/7 as your answer.

Hope this helps ;)

ycow [4]3 years ago

6 0

Answer:letter c x=30/7

Step-by-step explanation:

You might be interested in

Find the x-intercept and the y-intercept of the graph of the equation.

andriy [413]

Answer:

x = 6

Step-by-step explanation:

To attain the x-intercepts you have to let y = 0.

So in this case you will be having:

4x + 2(0) = 24

4x/4 = 24/4

x = 6

Hopefully it makes sense.

:)

6 0

3 years ago

What is the slope of a line perpendicular to the line whose equation is x-y=5x−y=5.

stepladder [879]

Answer:

Step-by-step explanation:

5 0

3 years ago

Simplify the expression by combining like terms. 23+6c+8d−7d−6

Varvara68 [4.7K]

The answer is:

17 + 6c + d

You can combine the 23 with the -6 and the 8d with the -7d

4 0

4 years ago

Read 2 more answers

A parabola opens down and its vertex is (2, 5). What is the range of this function?

Margaret [11]

The range of the parabola that opens down and has its vertex as (2, 5) is (b) $(-\infty,5]$

<h3>Vertex</h3>

The vertex of a parabola can represent the minimum or the maximum point in the parabola

The vertex of the parabola is given as:

$(h,k) = (2,5)$

<h3>The range</h3>

The range of a function is the set of output values the function can take

From the question, we understand that the parabola opens down.

This means that, the vertex of the parabola is a maximum.

Hence, the range of the parabola is $(-\infty,5]$

Read more about parabola at:

brainly.com/question/13136492

7 0

3 years ago

a box of candy contains 0.6 of pounds of caramels and 3.6 pounds of coconut what precent of the contents of the box

enyata [817]

Answer:

We know that the box has:

0.6lb of caramels

3.6lb of coconut.

Then the total mass of candy in the box is:

0.6lb + 3.6lb = 4.2lb

This is the 100% of the box.

Now, we can write this as:

4.2lb = 100%

For example, if we want to know which percentage is caramels, we write the equation:

0.6lb = X

We want to find the value of X

Then we have two equations:

0.6lb = X

4.2lb = 100%

Let's take the quotient of these two equations:

(0.6lb/4.2lb) = X/100%

Now we can solve this for X:

(0.6lb/4.2lb)*100% = X = 14.3%

the caramels represent the 14.3% of the wheight of the box.

And for the coconut candy, we have the relation:

3.6lb = Y

Now let's do the same again, we start with the two equations:

3.6lb = Y

4.2lb = 100%

Take the quotient:

(3.6lb/4.2lb) = Y/100%

Solve for Y:

(3.6lb/4.2lb)*100% = Y = 85.7%

Now we found the percentage that represent each type of candy in the box.

5 0

3 years ago