Combine like terms to simplify each expression.
1) -3x + 7x

Answers

Answer 1

Answer:

4x

Step-by-step explanation:

-3x + 7x

(-3 + 7)x

4x

Answer 2

Answer:

4x

Step-by-step explanation:

to make it easier, remove the x:

-3+7

Add:

4

Put the X back:

4x

This method will not always work for every problem.


Related Questions

-3y-2=7 what is the value of y

Answers

Answer:

y = -3

Step-by-step explanation:

Add 2 to each side to isolate the -3y. Doing this leaves you with -3y=9. You then divide each side leaving you with y = -3

Answer:

The equation has one solution at which y = -3.

Step-by-step explanation:

To find the value of y, we need to isolate it from the rest of the equation.

Add 2 to both sides of the equation.Divide by -3 on both sides of the equation.Simplify the equation if necessary.

[tex]\displaystyle{-3y-2=7}\\\\-3y = 9\\\\\bold{y = -3}[/tex]

We can check to make sure that y = -3 by substitution.

[tex]\displaystyle{-3(-3)-2 = 7}\\\\9-2=7\\\\7= 7 \ \checkmark[/tex]

Because we got a true statement, we can determine that y = -3.

Please help!!!!!!!!!!!​

Answers

Answer:

6/72

Step-by-step explanation:

6/72 =0.0833333333

Answer: 2/9 X 3/8

NOW'

2  X 3   =   6   THIS IS THE ANSWER WHEN U MULTIPLY NOW AS PER

9      8        72

THE QUESTION WE NEED TO SIMPLIFY IT....

SOOOOOO LETS SEE FIRST IF WE CAN SIMPLIFY IT......

my method)

6/72 (lets divide num nd deno by 2)

3/36( Ahh! we cn simplify it further now divide by 3)

1/12

Other metthod

6/72 ( DIVIDE BY 6)

1/12

Step-by-step explanation:

What is the range of the function graphed below?

Answers

The range is all possible y values. In this function, range is from -3 < y
* the

5. Which number is irrational? 3 (1) V16 (2) V12 (3) (4) 0.50

Answers

Answer:

(3)√12

Step-by-step explanation:

The other numbers are not continuous

what is 0.144444444444 as a fraction

Answers

Answer:

18/125

Step-by-step explanation:

Heather has a bag with 3 marbles, 7 tennis balls, 3 apples, and 3 books. What is the ratio of books to tennis balls?
A.
(3/7) or 3:7
B.
(7/8) or 7:8
C.
(4/7) or 4:7

Answers

Answer:

B

Step-by-step explanation:

I hope it's correct and I'm thinking it is,. Sorry if it's not

Answer:

I think A

Step-by-step explanation:

3/7. Or 3:7

Cause there are 3 books and 7 tennis balls

Help Really quick
The table shows data collected from 14 people.

Shoe Size, x 8.5 9 9 9.5 10 10 10.5 10.5 11 11 11 12 12 12.5
Height (inches), y 66 68.5 67.5 70 70 72 71.5 70 71 71.5 73 73.5 74 74
Determine the correlation coefficient for the data. Round to the nearest hundredth.

r=

Answers

Answer:

i need the answer ;(

Step-by-step explanation:

How do I solve this please?

Answers

Answer:

given us,

n=4

here

3^-n+1-3^-n+2

3^-4+1-3^-4+2

-4+1-4+2

-5

Step-by-step explanation:

we can put value in n .we can power add and subtract then we can cut 3 then power we can add or subtract

Mary went to the local market to purchase some fruit. Each box of
oranges sold for $3 and each box of pears for $5. Mary purchased a total
of 18 boxes of fruit for $68. How many boxes of oranges did she
purchase?

Answers

Answer:

11

Step-by-step explanation:

11 BOXES OF ORANGES IS $33

7 BOXES OF PEARS IS $35

WHICH EQUALS $68

MEANING THERE IS 11 BOXES OF ORANGES

HELP ME OUT PLS AND TY

Answers

Answer:

No, the line does not pass (0,0).

No, the line does not pass (0,0)

Brainliest Appreciated!

Answer:

NoNo

I hope this helps!

Which graph represents the equation y=−12x+1?

Answers

Answer:

Graph the equation of the line for the equation , y = 3x-12.

Step-by-step explanation:

hope this helps

The length of a rectangle is 10 more than 10 twice the width , if the perimeter is 80inches find the length the width

Answers

Answer:

The width is 10 inches

The length is 30 inches

Step-by-step explanation:

Perimeter of a Rectangle

The perimeter of a rectangle of length L and width W is calculated as follows:

P = 2L + 2W

It's given the length of a rectangle is 10 more than twice the width:

L = 2W + 10

Substituting into the formula of the perimeter:

P = 2(2W + 10) + 2W

Operating:

P = 4W + 20 + 2W

P = 6W + 20

It's given this perimeter is 80 inches, thus

6W + 20 = 80

Subtracting 20:

6W = 80 - 20 = 60

Dividing by 6:

W = 60 /6 = 10

Since :

L = 2W + 10

L = 2*10 + 10

L = 30

The width is 10 inches

The length is 30 inches

Solve the following equation for a.
n=b/a+3.

a=

Answers

Answer:

the answer is a=b/n-3

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

2. A set of barbells consist of red and blue discs. Discs with the same color have the same mass. Using a balance,
Lia found that 7 blue discs balance 1 red disc and a 5kg mass, while 2 blue discs and a red disc balance a 4kg
mass. Find the masses of the red and blue discs. (2kg, 1kg)

Answers

Let r be the mass of a red disc and b the mass of a blue disc.

7 blues have the same mass as 1 red along with a 5 kg mass, so

7b = r + 5

7b - r = 5

2 blues and 1 red have the same mass as a 4 kg mass, so

2b + r = 4

Solve for b and r . Notice that adding the equations together eliminates r :

(7b - r) + (2b + r) = 5 + 4

9b = 9

b = 1

Then

7 • 1 - r = 5

r = 7 - 5

r = 2

So each red disc has a mass of 2 kg, and each blue disc has a mass of 1 kg.

Which describes how to graph h(x)= –RootIndex 3 StartRoot x EndRoot + 3 using transformations of the parent function? Reflect over the horizontal axis, and then translate the graph right 3 units. Reflect over the horizontal axis, and then translate the graph up 3 units. Reflect over the vertical axis, and then translate right 3 units. Reflect over the vertical axis, and then translate up 3 units.

Answers

Reflect over the horizontal axis, and then translate the graph up 3 units

Answer: Reflect over the horizontal axis, and then translate the graph up 3 units.

Write the following fractions in order of size
1/3
3/4
1/4
7/12
1/2
Start with the smallest fraction.​

Answers

Ans wer 7/12 3/4 1/3 1/2

Step-by-step explanation:

The graph of the function B is shown below. If B(x) = -1, then what is x?
1
2
-1

Answers

Answer:

x = 2

Step-by-step explanation:

B(x) = - 1 means what is the value of x for y = - 1

This is the dot positioned at (2, - 1 )

with x = 2

Answer: its the first one

Step-by-step explanation:

hope thats what your lookinf for

A population of kangaroos is growing at a rate of 2% per year, compounded continuously. If the rate continues, how many years will it take of the population to reach 150% of its current size according to the exponential growth function?

Answers

Answer:

75 years.

Step-by-step explanation:

Divide 150 by 2, that gives you the years.

(Please help!!) Arnold is paid a graduated commission on sales. He earns 7% on sales up to $10,000 and 10% on sales over that amount. His goal is to make $2,500 next month. How much will he need to sell?

Answers

Answer:

Step-by-step explanation:

10000*7%= $700.00

2500-700=1800

1800 is 10% of 18,000

So 18,000 +10,000 = 28,000 in sales is needed to get $2,500 in commission.

What is the solution to the equation?

2(x + 7)2/3 = 8
A. -15 and 1
B. -15
C. 1
D. no solution

Answers

No solution (D)
Answer = -1

Answer:

-1 option D (no solution)

Step-by-step explanation:

2(x + 7)2/3 = 8

2(X+7)2/3=8

4(X+7)=24

4x+28=24

4x=24-28

4x=-4

X=-4/4

X=-1

So the answer is -1

Simplify to create an equivalent expression. 617 - 3y) + 6(y + 1)​

Answers

You have to simplify

Answer:

623+3y

Step-by-step explanation:

You distribute the 6 then you add the ys and the numbers together

Desarrolla el siguiente cuadrado de binomio (2x³ - 6x)²

Answers

Answer:

[tex]4x^{6} - 24x^{4} + 36x^{2}[/tex]

Step-by-step explanation:

One number is eight more than another. If their sum is increased by 17, the result is 95. Find the numbers.

Answers

Answer:

No. are 35&43

Step-by-step explanation:

Let the one no. Be= X

Then the other no.= X+8

Sum of both no.= X+ X+8= 2X+8

When sum is increased by 17 = 2X+8+17=95

2X+25=95

2X=70

X=35

Other no=X+8= 35+8=43

Maddox is stacking cans to make a display at the grocery store. The bottom row of the stack has 20 cans. Each row has 4 fewer cans than the row below it until there are no cans left.

How many rows of cans are in Maddox’s stack

Answers

Answer: 5

Step-by-step explanation:

Factorise fully : 12x-8
please help :(

Answers

Answer:

-96 :)

Step-by-step explanation:

12 x (-8) = -96

if there is one negative in the problem the answer will be negative.

Answer: 4(3x-2)
12x-8
=4(3x-2)

1/2 of the sum of a number and 10

Answers

Answer:

1/2(x+10)

Step-by-step explanation:

Jackie solved the equation by completing the square.

x^2−8x+14=0
Which equation shows one of the steps Jackie could have taken to complete the square?

Question 1 options:

x^2−8x+64=−14

x^2−8x+16=−14

x^2−8x+64=−14+64

x^2−8x+16=−14+16

Answers

A is the correct answer.

Interpreting Unit Rates on Graphs - Item 1820
Questio
The graph shows the temperature of a liquid that is being heated during an experiment
Three of the statements are true. Which is NOT?
Temperature ("C)
(6.5, 26)
Time (min)

Answers

Answer:

what are the statements?

Step-by-step explanation:

Answer:

At this rate, it would take less than 10 minutes for the temperature of the liquid to rise 52°.

Step-by-step explanation:

HELP ASAP The number of hours you study for an exam affects your grade. What is a reasonable value of the range?
A) 75
B) 1.25
C) -30
D) 1/2

Answers

Answer
B I could be wrong
Explanation

Points c (-5,8) and d (2,5) lie in line cd, if points c and d are created by translating points c and d left 6 units, what is the slope of line c’

Answers

Answer:

Step-by-step explanation:

Remark

Moving 6 points left is not going to alter the slope (or it shouldn't).

The x value has to have 6 subtracted from it. Leave the y value alone.

Givens

C: (-5-6,8) = (- 11,8)

D: (2-6,5) =  (-4,5)

Formula

m = (y2 - y1)/(x2 - x1)

Solution

m = (8 - 5)/(-11 - - 4)

m = 3 / - 7

m = - 0.429

Check

Let's find the slope of the original points.

(8 -5)/(-5 - 2) = 3/-7 which is the same thing.

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