8)
Erica chooses a number. She divides it by four then subtracts 11. She then divides this
result by two. Her answer is 12.5. What was the number she started with?

Answers

Answer 1

Step-by-step explanation:

Let x be the number.

Divide it by 4

x/4

Subtract 11

x/4 - 11

x-44/4

Divides this result by 2

x-44/4 ÷ 2

x-44/4 × 1/2

x-44/8

Her answer is 12.5

x-44/8 = 12.5

x-44 = 12.5 × 8

x = 100 + 44

x = 144

Hence,

She started with 144 number.


Related Questions

HELP!!!
A chemical manufacturer wants to lease a fleet of 26 railroad tank cars with a combined carrying capacity of 560,000 gallons. Tank cars with three different carrying capacities are​ available: 7,000 ​gallons, 14,000 ​gallons, and 28,000 gallons. How many of each type of tank car should be​ leased?

Answers

Answer:

16 of the 28,000 gallon tanks

6 of the 14,000 gallon tanks

4 of the 7000 gallon tanks

Step-by-step explanation:

ez

The tank should be leased by each quantity by 4 tank cars of  7000 gallons , 6 tank cars of 14000 gallons and 16 tank cars of 28000 gallons .

What is elimination method?

In the elimination method, we eliminate any one of the variables by using basic arithmetic operations and then simplify the equation to find the value of the other variable. Then we can put that value in any of the equations to find the value of the variable eliminated.

According to the question

Let Tank cars of 7000  ​gallons = x

Let Tank cars of 14000  ​gallons = y

Let Tank cars of 28000  ​gallons = z

A chemical manufacturer wants to lease a fleet of 26 railroad tank cars with a combined carrying capacity of 560,000 gallons.

i.e ,

x + y + z = 26 ---------------------------------------(1)

and

7000x + 14000y + 28000z = 560000  

x + 2y + 4z = 80  --------------------------------(2)

Now , solving equation (1) and (2) by elimination method

x = 4

y = 6

z = 16

Hence, The tank should be leased by each quantity by 4 tank cars of  7000 gallons , 6 tank cars of 14000 gallons and 16 tank cars of 28000 gallons .

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When the teacher asked Henrietta which is bigger 0.8 or 0.64, Henrietta said 0.64 because “it represents 64 of the hundredths, rather than only 8 of them” what do you think of Henriettas explanation?

Answers

Answer:

Henrietta is incorrect

Step-by-step explanation:

Start in the tenths place and notice that 8 is greater than 6. This makes 0.8 greater than 0.64

You don't need to consider the hundredths place value unless both numbers in the tenths are the same.

Which pair of lines are perpendicular?

A y=-8 and y = 2
B y= -4x + 1 and 8X+2Y=-10
C x=4 and y= -1
D x-y=7 and y=x+3

Answers

9514 1404 393

Answer:

  C.  x=4 and y= -1

Step-by-step explanation:

A: lines are parallel (both are horizontal)

B. lines are parallel (both have slope -4)

C. lines are perpendicular (one is vertical, one is horizontal)

D. lines are parallel (both have slope 1)

please help me I don't understand ;-;

Answers

Answer:

-3.8

Step-by-step explanation:

to find the average [mean] of a data set, you add all the numbers [-19] and then divide by the amount of numbers [5]

Answer:

-3.8

Step-by-step explanation:You add all of the number together and divde the sum by however man numbers. (-4)+(-7)+(-2)+(-4)+(-2)=-19.-19 divided by 5 equals -3.8

Joaquin made four times as many goals as daniel during soccer practice today. What is the ratio?

Answers

Answer:

4:1

Step-by-step explanation:

Let the no. of goals Daniel scored be x

Hence,

No. of goals Joaquin scored = 4 x

No. of goals Daniel scored = x

Hence,

The ratio of the no. of goals scored by Joaquin to the no. of goals scored by Daniel

[tex]=\frac{4x}{1x}[/tex]

[tex]=\frac{4}{1} \\=4:1[/tex]

7x + 3x + 4 - 24 (Given)
10x + 4 = 24 (Simplify)
10x = 20)
x = 2 (Division)
What is the missing reason for the argument shown?
A)
addition.
B)
division
C)
subtraction
D)
multiplication

Answers

Answer:

The missing reason for the shown argument is subtraction.

Step-by-step explanation:

Graph the following figure in the coordin
X(0,1), Y(4, - 2), Z(-5,-2)
The perimeter is

Answers

Answer: I am in highschool and im doing this stuff. If you find out the answer let me know please.

subract 5 3/4 - 2 7/8

Answers

Answer:

2.875

Step-by-step explanation:

you have to change them into decimals. so 5 3/4 would be 5.75 and 2 7/8 would be 2.875. once you do that you can subtract

48 on shelves how many on 12 shelves ​

Answers

Answer:

Step-by-step explanation:

If there are 48 books on shelves

Then number of books in 12 shelves

= 48 ÷ 12 = 4 books

Answer:

576

Step-by-step explanation:

because 48 books on each shelves 48×12=576

what is 1000000000000x0??????

Answers

Answer:

0

Step-by-step explanation:

Everything multiplied by 0 is 0.

Quinn is playing video games at a virtual reality game room. The game room charges 20 dollars for every 30 minutes of play time.

Answers

Answer:

whats the question-

Step-by-step explanation:

Answer:

so how many hours does he play, we need to know that so we can calculate it

Step-by-step explanation:

How many subsets of 5 e elements can be made from a set of 7 elements?

Answers

Answer:

seems like this.

Step-by-step explanation:

From set theory, the factorial combinations are 2^N where N are the number of induvidual mambers of the set and that includes the null set. If we require that one element be the minimum to form a set, this eliminates the empty set (and there is only one empty set) so we must subtract one from the formula. The correct answer is therefore 2^N-1. In this case that is 2^5–1 = 31.

Xavier plays an online video game that allows him to control many different characters. Each character starts the game with 200 gold coins and receives 30 gold coins for each month that passes within the game. If Xavier controls 50 characters and the numbers of months passed within the game is represented by x which function can be used to determine the total number of gold coins that Xavier has collected in the game

Answers

Answer:

c

Step-by-step explanation:

Answer:

Step-by-step explanation:

The question is.

Xavier plays a video game that allows him to control many different characters.

Each character starts the game with 200 gold coins.

Each character receives 30 gold coins for each month that passes within the game.

Xavier controls 50 characters in the video game.

Which function shows the relationship between A(x), the total number of gold coins that Xavier has collected playing the game, and x, the number of months that have passed within the video game?

Your answer would simply be C. A(x) = 50(30x + 200)

Because, your basicaly puting it in an equation, and pluse i got it right on my test so yea

in 2009,Alaska suffered an earthquake of magnitude m=7.1. find the intensity of that earthquake​

Answers

Answer:

Here you go :)

7.0 to 7.9 Major earthquake. Serious damage. 20

Or

Major 7 - 7.9

________

Answered by James

Step-by-step explanation:

Rewrite the following expression: x3 + x5 =

Answers

Answer:

x + 8 = x8

Step-by-step explanation:

This is one of the many ways to rewrite this equation. The reason this is a way of rewriting it is because 3x plus 5x equals 8x and if you take away the variable from 3 and 5 and add the numbers together you get 8. So take the variable x add it to 8 and you get x8. Both equations have the same answer so therefor this is another way of writing the equation.

Translate the sentence into an equation.
Twice the difference of a number and 2 equals 6.
Use the variable b for the unknown number.

Answers

Answer:

b + 2 = 6

Step-by-step explanation:

This may not be the right answer, but its what I think it is.

Gerrit Cole’s salary pitching for the Yankees in 2020 is $36,000,000. Cole averages about 2,000 pitches each year. About how much money does Gerrit Cole make per pitch

Answers

36000000 x 2000 = 72000000000

(3x + 23) degree (7x - 37) degree find m angle XYV

Answers

Answer:

An Obtuse angle is an angle whose degree measure is greater than 90 and less than 180o. ... 2x + 8 + 3x + 2 = 180 ... 14 – 23, Provide the name of the following relationships: 14. ... m∠BEC = 5x - 25 and m∠DEA = 7x – 65, find ... 37. If the measures of the angles of a triangle are represented by 2x + 8, x - 8 and 2x – 20.

Step-by-step explanation:

The required measure of angle ∠XYV is given as 112°.

What are the angle?

Orientation of the one line with respect to the horizontal or other respective line is known as a measure of orientation and this measure is known as the angle.

here,
According to the given condition,
As Line WV intersects line XZ at V so,
Angle XYW = Angle VYZ
Substitute the value in the above expression,

3x + 23 = 7x - 37

60 = 4x
x = 15

∠ XYW = 3x + 23
            = 3(15) + 23
            = 45 + 23
            = 68

Now,
∠XYV = 180 - ∠ XYW
Substitute the value in the above expression,


∠XYV = 180 - 68
∠XYV = 112°

Thus, the required measure of angle ∠XYV is given as 112°.

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What is the slope-intercept equation of the line below?
5
-5
H
O A. y = 2x+1
O B. y=-2x+1
O C. y= 2x-1
O D. y=-2x-1

Answers

Answer:

could I have a picture of the line

What is the first step to solve this equation:
11 - 3x = 44

Answers

Answer:

Subtract 11 from both sides

Step-by-step explanation:

X has to be alone

Answer:

Subtract 11 from sides

Step-by-step explanation:

You have to get the x by itself first

Determine the type and number of solutions for the follow equation.
x² – 8x=-7

Answers

Answer:
x = 7 OR x = 1

Have a nice day

Select two ratios that are equivalent to 7: 10.


Just trying to get my late work done ✅ thxs

Answers

Answer:

21:30

35:50

Step-by-step explanation:

21 divide by 3 =7  30 divide by 3=10

35 divide by 5=7    50 divide by 5=10


Which unit of length would be most appropriate to describe the length of your
foot?

Answers

Answer:

inches

Step-by-step explanation:

well depends on how big your foot is

I need some help I suck at math‍♂️‍♂️

Answers

Answer:

x = 11

Step-by-step explanation:

Add 7/6 to each side, so it now looks like this: 5/6x = 55/6Divide each side by 5/6 to cancel out the 5/6 next to x. It should now look like this: x = 11

I hope this helps!

Which best describes the solution set of the compound inequality below?

Answers

Answer:

All real numbers except x=1.

(6x^4-8x^2) divided by 2x^2, where x does not equal 0?

Answers

Answer:

3x^2 - 4

Step-by-step explanation:

(6x^4 - 8x^2) ÷ 2x^2

3x^2 - 4

What is the reflection image of (4, -1) across line y=x?

a
(-1,4)
b
(-1,-4)
c
(1,-4)
d
(-4,1)

Answers

Answer:

I think it is a. (1,-4) b. (1,4) c. (-1,4) and d. (4, -1)

Step-by-step explanation:

Im sorry if this did not help you but I tried.

Answer:

A (-1, 4)

Step-by-step explanation:

When you reflect over the y=x line the rule is that the Y and X switch places. So, (4, -1) ---> (-1, 4)

If a right triangle has two legs of 7m and 24m what is the length of the longest side? *

Answers

Answer:

It would be 24m

Step-by-step explanation:

The longest side of a right triangle is the hypotenuse.

Use the Pythagorean theorem to solve for the hypotenuse:

X = sqrt(7^2 + 24^2)

X = sqrt( 49 + 576)

X = sqrt(625)

X = 25

The longest side is 25m

PLEASE HELP ME OK SO WHAT IS X/5 + 6 <2

Answers

Answer:

x < -20

Step-by-step explanation:

[tex]\frac{x}{5}[/tex] + 6 < 2

subtract 6 from both sides of the equation

[tex]\frac{x}{5}[/tex] < 2 - 6

[tex]\frac{x}{5}[/tex] < -4

multiply both sides of the equation by 5

x < -4 * 5

x < -20

estimate 203*12 = answer it plzzz

Answers

Answer:

2,436

Step-by-step explanation:

Answer: 2400 estimated

Step-by-step explanation:

Real answer would be 2,436

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