Three times the sum of a number and nine is 12. Find the number.

Answers

Answer 1

Answer:

7

Step-by-step explanation:

3x+9=12

3x=21

x=7

Answer 2

Answer:

[tex] - 5[/tex]

Step-by-step explanation:

[tex]3(x + 9) = 12[/tex]


Related Questions

If y varies inversely as x and y = 9 when x = 4, find y when x = 6.

Answers

Answer: x

=

6

Explanation:

the initial statement is

x

1

y

to convert to an equation multiply by k the constant

of variation

x

=

k

×

1

y

=

k

y

to find k use the given condition

x

=

4

when

y

=

9

x

=

k

y

k

=

x

y

=

4

×

9

=

36

equation is

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

2

2

x

=

36

y

2

2

−−−−−−−−−−−−

when

y

=

6

then

x

=

36

6

=

6

Step-by-step explanation:

if layla can right 20 essays in 15 minutes and 8 in 6 minutes then how many can she right in 45 minutes?​

Answers

Answer:

60! hope this helps!

Step-by-step explanation:

Solve each multi-step inequality
6 - 8n > - 8 - 6n

Answers

Answer:

n<7

Step-by-step explanation:

hope i did okay for you

Answer:

7>n

Step-by-step explanation:

6-8n>-8-6n

Add 8n on both sides

6>-8+2n

Add 8 on both sides

14>2n

Divide

7>n

Mrs. Curry own a hair salon. One day, she gave 12 haircuts. She eamed $19.95 for each and received an average tip of $2 for each
haircut.
Select the equation that would express the total amount that she eamed?
a. (19.95 x 12)2
c 19.95 + 2 + 12
b. (19.95 x 2) +12
d. 12(19.95 +2)

Answers

Answer:

Option d     12(19.95 + 2)

Step-by-step explanation:

The answer would be an option d, since we know that she gets paid $19.95 plus the $2 per haircut, and we know that she gave 12 haircuts there for we multiply the sum of $19.95 and $2 by 12, and that can be written down as...

12(19.95 + 2)

Fully factorise 20x + 16.
.
2
-2

2
TT
0
Enter your answer

Answers

Answer:

4(5x+4) is the answer

Step-by-step explanation:

..............

Find m < E (Image Below)

Answers

Answer:

uiuiuiui86767

Step-by-step explanation:

your answer is e330408384

(HELP PLEASE - URGENT)

The elevation of a sea animalis -20 meters.
Choose all elevations that are greater than the elevation of the sea animal.
A. 5 meters
B. -16 meters
C-40 meters
D. O meters
E.-22 meters

Answers

Answer:

5,0 and -16

Step-by-step explanation:

Answer:

A, B, D

Step-by-step explanation:

-20<5

-20<-16

-20>-40

-20<0

-20>-22

What would you multiply by to increase a number by 4%?

Answers

Answer:0.04

Step-by-step explanation:4% is just 0.04. Example I multiply 2 by 4% i get 0.08. I multiply 2 by 0.04 i get 0.08. Hope this helped.

You have inherited land that was purchased for $30,000 in 1960. The value of the land increased by approximately 5% per year. What is the approximate value of the land in the year 2015?

Answers

Answer:

$112,500

Step-by-step explanation:

Pls help I don’t get it

Answers

Answer:

Try typing into a scientofic calculator I reccomed the site desmos

Step-by-step explanation:

Answer:

12a + 8b

Step-by-step explanation:

There isn't An outcome due to the fact that it needs more to be worked out, but that's the simplified form, I believe that's what they wanted to know.

Hope It Helps!

help will give brainliest

Answers

Answer:

18 and 32

Step-by-step explanation:

PLEASE ANSWER and show work
im literally giving 20 brainly points so PLEASE HELP ME

Answers

Answer:

I wrote out the answers on top of the sheet. Hope this helped!

Step-by-step explanation:

Which event has a probability of 1/2? Select all that apply.

A.rolling a number greater than 6 on a six-sided number cube.
B.Picking a black marble out of a bag of black marbles
C.A flipped coin landing on tails
D.A flipped coin landing on heads or tails
E.Picking a blue marble from a bag of 6 red marbles and 6 blue marbles
F.Rolling an odd number on a six-sided number cube

Answers

C, E, and F have 50 50 chance

Please help! 58 points for both questions and explain how to get the answer!

Answers

Answer:

number 2 is c

number 1 is d?

Step-by-step explanation:

because if it a has been 1 minute(m=1) the 35(1)=w --> w=35 for for one minute there is 35  words 35m=w

for 1 i cannot see, but if d says 3/4 and x=3/4 then d is the answer

Answer:

(For your second question.):

35w=m

Step-by-step explanation:

Why?

It states in the problem itself that miles types 35 words per minute.

"w" stands for words

'm' stands for minutes.

The constant rate relies on the clearest data after all. The equation itself is enough!

Remember: 1 min = 60 seconds.

SOMEONE ON THIS PLANET PLEASE HELP

Answers

Answer:

38*

Step-by-step explanation:

Shelly and Steve buy prepaid phone
cards so they can call home from
summer camp. Shelly buys 150 minutes
for $30. Steve buys 200 minutes for
$42. Who is the person getting the
better deal?

Answers

Answer:

Steve

Step-by-step explanation:

steve is buying 200 minutes which is more than 150 minutes

Hope i helped :) :) :)

Graph a line with a y-intercept of 3 and containing the point (2, 5).

To graph a line, plot two points on the line.

Answers

Answer:

click on the thanks

(c) Paul uses the function y = 7x + 30 to model the situation. What score does Paul’s model predict for 3 hours of homework?

(d) Describe what the number 30 in Part (c) mean in the context of the situation?

Answers

Answer:

(c) Paul's model predicts a score of 51 for 3 hours

(d) 30 represents the y intercept

Step-by-step explanation:

Given

[tex]y = 7x + 30[/tex]

Solving (c): What is y when x is 3

Substitute 3 for x in [tex]y = 7x + 30[/tex]

[tex]y = 7*3 + 30[/tex]

[tex]y = 21 + 30[/tex]

[tex]y = 51[/tex]

Solving (d): What does 30 represent

An equation is represented as:

[tex]y = mx + b[/tex]

Where

[tex]b = y\ intercept[/tex]

Compare: [tex]y = mx + b[/tex] to [tex]y = 7x + 30[/tex]

[tex]b = 30[/tex]

This implies that 30 represents the y intercept

50 POINTS !!!!!!!!
Which terms can be combined in the expression below? Select three options.

StartFraction 5 over 6 EndFraction a minus 2 b minus 16.3 + StartFraction b over 12 EndFraction + c minus 0.9 b
StartFraction 5 over 6 EndFraction a
–2b
–16.3
StartFraction b over 12 EndFraction
–0.9b

Answers

Answer:

-2b,  b/12,  -0.9b

Step-by-step explanation:

I understand this is late, but hopefully, it'll help someone who needs it, have a good day

Answer:

A Is your answer.

Step-by-step explanation:

24-79/12-2

2. 1. Asia's new boat has a cruising speed of 27 miles per hour. At that rate, how long will it take her to travel the 3 miles across Old Hickory Lake?​

Answers

Answer:Time = 1/9 Hours  0r  0.11111 hours

Step-by-step explanation:

We Know that Speed = Distance / Tim\e

Using the constant rate of the speed given as 27 miles per hour at

Distance = 3miles

Time = Distance  / Speed

Time = 3 miles / 27miles per hour = 1/9 hours

If a point (5,2) is rotated counterclockwise 90º about the origin, its image will be point

(Im on a timed test, please help)

theres are the answer choices:
A. (-2, 5)

B. (-5, 12)

C. (2, 5)

D. (2, -5)

Answers

Answer:

The answer is A

Step-by-step explanation:

On the morning of the sale, the store donated 50 pairs of shoes to a homeless shelter. Then they sold 64% of their remaining inventory during the sale. If the store had 288 pairs after the donation and the sale, how many pairs of shoes did they have at the start? how many shoes did they have at the start?

Answers

Answer:

850.

Step-by-step explanation:

Let the number at the start be x shoes. Then:

x - 50 - 0.64(x - 50) = 288

x - 0.64x - 50 + 32 = 288

0.36x = 288 + 50 - 32

0.36x = 306

x = 306/0.36 =  850.

Answer:

850 is the answer to the question

How many wreaths could Diego make with the available ribbon

Answers

Answer:

9

Step-by-step explanation:

The expression 3(-2m + 5) - 6(-4m - 2) can be written in the form am + b. What is the value of a + b?

Answers

Answer: 45

Step-by-step explanation:

3(-2m + 5) -6(-4m - 2) =

-6m + 15 + 24m + 12=

18m + 27

18= a 27= b 27 + 18= 45

The value of the expression a + b is 45.

What is an expression?

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the like terms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

First, we can simplify the expression using the distributive property:

3(-2m + 5) - 6(-4m - 2) = -6m + 15 + 24m + 12

Combining like terms, we get:

18m + 27

So, a = 18 and b = 27, which means:

a + b = 18 + 27 = 45

Therefore,

The value of a + b is 45.

Learn more about expressions here:

https://brainly.com/question/3118662

#SPJ3

What is the value of x?

Answers

Answer:

square root of 72

or 3 to the square root of 8

Step-by-step explanation:

below for question 10.
10. Harmony places the letters in the word DECEMBER into a bag. A letter will be randomly
selected and not replaced. Then another letter will be selected. What is the probability of
Hormony selecting a C and then an E?

Answers

Answer:

3/56

Step-by-step explanation:

There are 8 letters in the word DECEMBER. The probability of picking a C first is 1/8, since there's only one C. Since the letter is not replaced, there are now 7 letters to choose from, out which 3 of those are the letter E. Therefore, the probability of picking an E second is 3/7. The total probability then is equal to [tex]\frac{1}{8}[/tex] times [tex]\frac{3}{7}[/tex], which is equal to [tex]\frac{3}{56}[/tex].

Hope this helps! :D

An art class is making a mural for the school that has a triangle drawn
in the middle. The length of the bottom of the triangle is x. Another side
is 1 more than three times the length of the bottom of the triangle. The
last side is 2 more than the bottom of the triangle. Write and simplify an
expression for the perimeter of the triangle.

Answers

Answer:

Perimeter = 5x+3

Step-by-step explanation:

Perimeter = (3x+1)+(x+2)+x

Perimeter = 5x+3

It takes a total of 3 hours to wash every window on a building. There are 30 windows. How many minutes does it take to wash just one window? (4 points)
O 6 minutes
O 60 minutes
180 minutes
O 5,400 minutes

Answers

6 minutes per window. Multiply 3(60) and then divide by the number of windows (30)

Answer:

A. 6 minutes

Step-by-step explanation:

6 minutes is 1/10 of an hour.

60 minutes is 1 hour.

5,400 minutes is 90 hours.

3 hours is 180 minutes. You can solve this as a proportion:

[tex]\frac{180}{30} =\frac{x}{1}[/tex]

Cross multiply to get 30x = 180. x = 6.

Hope it helps!

(3-4 +5-3)-²

help me

Answers

Answer:

1

Step-by-step explanation:

Answer:

Your answer is literally 1

Step-by-step explanation:

(3−4+5−3)2

=1*1

=1

Hope this is what your looking for

If an ordered pair was added to the table, which of the following pairs would result in the table becoming not a function. (-3, 6) (0, 8) (3, 20) (8, 4) (-10, 8)

(A) (– 8, 8) (C) (8, 3) ( B) (6, 3)(D) (– 3, 4)
help please

Answers

Answer:

the answer is a I just took the test and its right

Step-by-step explanation:

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