which property of equality should you use to solve the equation for x? -3x = 21
A. The division property of equality
B. The subtraction property of equality
C. The addition property of equality
D. The multiplication property of equality

Answers

Answer 1

Answer:

A. The division property of equality

Step-by-step explanation:

To get x you need to find a way to get it by itself, which can be done by dividing -3 from both sides of the equation (which is the division property of equality).

For example,

-3x=21

/-3  /-3

x=21/-3

x=-7


Related Questions

please help me it would help a lot

Answers

Answer:

7/80 is the answer because there are 7 possible chances she can get a red or blue gumball.

Step-by-step explanation:

Tai has a bag of different-colored balloons. Without looking in the bag, she selects a balloon, records its color, and puts it back in the bag. All balloons are equally likely to be chosen. She performs 50 trials.

Number of times a red balloon was chosen 15

Number of times a yellow balloon was chosen18

Number of times a green balloon was chosen9

Number of times a pink balloon was chosen8

Based on the data Tai collected, what is the estimated probability, in simplest form, of choosing a yellow balloon from the bag?

A. 9/50

B. 18/100

C. 9/25

D. 50/18​

Answers

Answer:

9/25

Step-by-step explanation:

Integer Quotient Problem
Two positive integers have a sum of 92.
If the larger integer is divided by the smaller one, the quotient is 3
and the remainder is 12. What are the two integers?

Answers

Suppose that we have x and y as the integers( x is bigger than y ).

As the question told :

x = 3y + 12

_________________________________The integers have a sum of 92 which means :

x + y = 92 ==》( 3y + 12 ) + y = 92

==》 4y + 12 = 92

==》 4y = 92 - 12

==》 4y = 80

==》 y = 20

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x + y = 92 ==》x + 20 = 92

==》x = 92 - 20

==》x = 72

Answer:

The two integer is, y = 20 and

                               x = 72

Step-by-step explanation:

Definition of integer:

Integer, positive or negative whole number, or 0 The integers are created using the counting numbers 1, 2, 3,... and the subtraction function. The result of subtracting a counting number from itself is zero; for example, 4 4 = 0. When you subtract a greater number from a smaller number, you get a negative whole number; for example, 2 3 = 1. Every integer may be deduced from the counting numbers in this fashion, resulting in a set of numbers that can be subtracted.

As the question told :

x = 3y + 12

The integers have a sum of 92 which means :

x + y = 92

        = ( 3y + 12 ) + y = 92

        = 4y + 12 = 92

        =  4y = 92 - 12

        =  4y = 80

     y = 20

Then, x + y = 92

       x + 20 = 92

                x = 92 - 20

                x = 72

The two integer is, y = 20 and x = 72

To know abour integer here, https://brainly.com/question/17695139  

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In Phoenix, Arizona, the average temperature is 85 degrees Fahrenheit or higher during 25% of the year. During about how many weeks of the year is the average temperature below 85 degrees Fahrenheit?

Answers

Answer: 39 weeks

Step-by-step explanation:

Given

The average temperature is [tex]85^{\circ}F[/tex] or higher

A year has 52 weeks

It is given 25% of the time-temperature is above [tex]85^{\circ}F[/tex]

So, in the remaining 75% of the weeks, the average temperature is less than [tex]85^{\circ}F[/tex]

No of weeks can be determined by

[tex]\Rightarrow 75\%\ \text{of}\ 52\\\\\Rightarrow \dfrac{75}{100}\times 52=39\ \text{weeks}[/tex]

7b^2-63b+140 Factor the polynomial (show your work)

Answers

Answer:

7 (b - 5) (b- 4)

Two angles form a linear pair. The measure of one angle is eight
times greater than the measure of the other angle. Find the measure
of the bigger angle only.

Answers

Answer:

160

Step-by-step explanation:

Givens

Let the smaller angle = x

Let the larger angle = 8x

Equation

x + 8x = 180       Combine like terms

Solution

9x = 180             Divide by 9

9x/9 = 180/9

x = 20

Answer

The larger angle = 8 * 20 = 160    

Find the 8th term of the geometric sequence 6,-12,24...

Answers

786 is the 8th term the geo sequence 6, 12, 24, 48

Solve for x.

ax + bx = 10


Answers

The answer to ur question is X=10/a+b
ax+Bc=10
x(a+b)=10
Divide both the sides by a+b
X(a+b)/(a+b)=10/a+b
Therefor x=10/a+b

Pls help easy one.
What is the median of 26, 29, 29, 17, 33, 24, 32, 24, 21, 29

Answers

Answer:

27.5

Step-by-step explanation:

17,21,24,24,26,29,29,29,32,33

26+29

55/2

27.5

PLS HELP PLSSS HELP!

Answers

Answer:

3/8 is 3 divided by 8

Step-by-step explanation:

Three is in the numerator and eight is in denominator and so it is 3 divided by eight

the circumference of a circle is 62 TT cm. the area of the circle is ___ TT cm^2.​

Answers

Answer:

961 TT cm^2

Step-by-step explanation:

c=TTD note that d is diameter which is 62 thus radius is half 31a=TTr^2. TT31^2Answer is 961 TT cm^2

Which expression is equivalent to 12m(2n + 6p - 10)?

Answers

Answer:

24mn + 72mp - 120m

Step-by-step explanation:

Multiplying as indicated, we get 24mn + 72mp - 120m

Answer:

[tex]24mn + 72mp - 120m[/tex]

Step-by-step explanation:

[tex]12m(2n + 6p - 10)[/tex]

[tex]12m(2n)12m(6p)12m(-10)[/tex]

[tex]12 \times 2mn + 12 \times 6mp - 120m[/tex]

[tex]24mn + 72mp - 120m[/tex]

Hope it is helpful....

im confused on this problem

Answers

Answer:

y = 54, x = 62

Step-by-step explanation:

plz mark helpful, 5 str, and give brailiest, thx!

20 POINTS!!!! PLEASE I NEED HELP!
Describe a scenario in a trimmed mean would be more applicable than a arithmetic mean?

Answers

Can I give u a file?

How do I solve this ?

Answers

Answer:

16

Step-by-step explanation:

because it's g of 7 use the third equation.

(7+1)(7-5) = 8x2 = 16

98x24(100-2)x24 using the distributive property

Answers

Answer:

98 x 24 = 2352

2352 x 2400 = 5,644,800

2352 x (-48) = - 112,896

5,644,800 - 112,896 = 5,531,904

5,531,904 x 24 = 132,765,696

Step-by-step explanation:

Elaine has a $25 gift card. She uses the card each
month to purchase a magazine for $3.50 at the
bookstore. How much money will Elaine have
remaining on her gift card after 7 months?

Answers

Answer:

$0.50

Step-by-step explanation:

multiply 3.50 by 7 and you get 24.5. $25.00-$24.50= $0.50

Answer:

0.5

Step-by-step explanation:

Well lets start with a basic equation.

$25=3.50(7)

25= 24.5 multiply 3.50 and 7

25-24.5=0.5 subtract the total from the whole

After using the card for 7 months she will have 5 cents left on her card.

What is the volume of each figure? (Please write the formula and answer)

Answers

Answer:

1. (top left corner) = 8km^3

2. (bottom left corner) = 243 in^3

3. (top right corner) = 200 cm^3

4. (bottom right corner) = 3165.12 m^3

Step-by-step explanation:

1. (top left corner) lwh = 4km x 2km x 1km = 8km^3

2. (bottom left corner) (lwh)/3 = (9 x 9 x 8) / 3 = 243 in^3

3. (top right corner) lwh = 5 x 5 x 8 = 200 cm^3

4. (bottom right corner) πr^2h

R = 12

3.14 x 12^2 x 7 = 3.14 x 144 x 7 = 3165.12 m^3

Eight is less than 4 times another number can be shown by the inequality 8 < 4n. Choose the answer that make this inequality a true statement.

Answers

Answer:

n < 2

Step-by-step explanation:

Let

The unknown number = n

8 < 4n

n < 8 / 4

n < 2

therefore, n must be less than 2

If n = 2

Then, 8 Will be equal to 4 times the number

Which function does this graph represent

Answers

Answer:

b. f(x) = -3(x+1)^2+2

Step-by-step explanation:

i hope this helps :)

What is the mode of the following numbers?
3,7, 5, 2, 5, 5, 2,5

Answers

The mode is 5.ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ

Answer:

The mode is 5, hope this helps!

Need help with math!!!!!!

Answers

Answer:

3

Step-by-step explanation:

the third option

It is D because 3/5 is .20x3 so it is .60

helpppp lol two questions

Answers

Answer:

1. x= y/5 + 22/5    

2. y=17 − 3x2

Step-by-step explanation:

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Answers

Answer:

i believe it b 75% sure i sorry if i can't help

Step-by-step explanation:

x/3-300=250 Show your work

Answers

Answer:

x=1650

Step-by-step explanation:

1650/3=550-300=250

Answer:

x = 1650

Step-by-step explanation:

We are given the equation x/3 - 300 = 250 and are asked to solve for x.

To solve this, we need isolate x, do as followed :

x/3 - 300 = 250

Add 300 to both sides :

x/3 = 550

Multiply 3 to both sides :

x = 1650

LAST POINTS PLEASEE PLEASEEEE HELP!! :(

Answers

Answer:

D. 22  2/3

Step-by-step explanation:

To find area you multiply length times width.

Here:

L = 5 2/3

and W = 4

So multiply 5 2/3 by 4, you get 22 2/3

Good luck! Please mark brainliest!

2y greater than or equal to -12-4y OR 2y>-14+6y

Answers

Answer:

2y bigger or same -12-4y is correct

Step-by-step explanation:

Y=1

2=-12-4×1

2=-16

2 is bigger

Y=-2

-4=-12-4×(-2)

-4=-4 it's same

number of goals scored

Answers

Answer:

a) 30 games

b) 66 points total

c) 2.2 points/ game

d) modal goals = 1

Step-by-step explanation:

a) 2 + 10 + 7 + 6 + 3 + 2 =  30 total games

b) (2*0) + (10*1) + (7*2) + (6*3) + (3*4) + (2*5)

0 + 10 + 14 + 18 + 12 + 10 = 66 total goals

c) 66 goals/ 30 games = 2.2 goals/ games

d) highest frequency of number of goals is 1 goal

Connor has 3 3/4 feet of brown fabric and 3/4 yard how many more feet of brown than green fabric those he have

Answers

Answer:

1 1/2

Step-by-step explanation:

1 YARD = 3 FEET

3/4 X 3 = 9/4 = 2 1/4

[tex]3\frac{3}{4} - 2\frac{1}{4}[/tex]

[tex]1\frac{3-1}{4}[/tex] = [tex]1\frac{2}{4}[/tex]

To transform to the simplest form. divide both the numerator and the denominator by 2

1 1/2

Find the perimeter of quadrilateral ABCD with vertices A=(1,1) B=(4,4) C=(7,1) D=(4,-2). Explain your answer.​

Answers

we have the coordinates of ABCD

there are 2 ways of doing this one is you find the distance of ab, bc, cd and da and then add the answers together. there is another way but i dont remember it properly so i am just gonna do it this way

distance between 2 point = [tex]\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}[/tex]

AB

[tex]d = \sqrt {(4 - 1)^2 + (4 - 1)^2}[/tex]

[tex]d = \sqrt {(3)^2 + (3)^2}[/tex]

[tex]d = \sqrt {9 + 9}[/tex]

[tex]d = \sqrt 18[/tex]

AB = 4.24

now repeat the same with all

BC= 4.24

CD= 4.24

DA= 4.24

so its a square with all the same sides so perimeter is 4 x 4.24

perimeter is 16.96

hope this helps

mark me as brainliest please

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