Mathematics Middle School

What is the value of x in the equation x – 7 = 11?
answer choices
1.57
4
15
18

Answers

Answer 1

Answer:

18 is the answer

Step-by-step explanation:

x-7=11

x=11+7

x=18

Related Questions

The mean of four numbers is 7. Three of the numbers are 5, 7, and 7. What is the fourth number? Show your work.

Answers

Answer:

4th number = 9

Step-by-step explanation:

let 4th number = X

mean = 7

observations = 5, 7, 7, X

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

mean = sum of observations ÷ numbers of observations

7 = 5+7+7+X ÷ 4

28 = 19 + X

28 - 19 = X

9 = X

The mean of the four numbers is 7. Three of the numbers are 5, 7, and 7. So, the 4th number would be 9.

How to find the mean value of a data set?

The mean value of the data set is the ratio of the sum of the data set's values to the number of values it has.

If the data set consists of values

[tex]x_1, x_2, ..., x_n[/tex]

, then we get the mean value as:

[tex]\overline{x} = \dfrac{x_1 + x_2 + \cdots + x_n}{n}[/tex]

The mean of the four numbers is 7. Three of the numbers are 5, 7, and 7.

let 4th number = X

Mean = 7

observations = 5, 7, 7, X

Mean = sum of observations / numbers of observations

[tex]7 = 5+7+7+X / 4\\28 = 19 + X\\28 - 19 = X\\9 = X[/tex]

Learn more about mean;

https://brainly.com/question/4515179

#SPJ2

Help asap pls. The mean of a math test took by 50 students is 85% Two students got a 10% on the test. If those outliers were removed, what would the new mean be? Pls don't answer for points. And also DONT ANSWER TO ASK A QUESTION COMMENT IT. it takes away a chance for people who actually know the answer to answer

Answers

Answer:

okay I'm not 100% sure but I have a good idea (it's okay if u remove me it's just an educated guess)

89%

Step-by-step explanation:

if there were 100 students that would mean 1 student represented 1% of the results. so if there were 50 students 1 student would represent 2% of the results. so if two students were removed then that would mean the result would improve by a total of 4% which would get you 89%

a. 35
b. 22
c. 14
d. 13

Answers

count tally marks and it adds up to 22

Answer:

B. 22

Step-by-step explanation:

You just add the total amount of people that have dogs which is 12 with the total amount of people that have cats which is 10 so the total amount that have dogs and cats as pets is 22 because 10 + 12=22

Help for lots of points

Answers

Answer:

45

Step-by-step explanation:

i hope this helps you :) i would do the middle one but you dont need that one

Answer:

its 45

Step-by-step explanation:

Please help me this is important!

Answers

The answer is B to your question

Domain and range pls

Answers

Definition is

The domain of a function is the set of all values for which the function is defined, and the range of the function is the set of all values that f takes. They may also have been called the input and output of the function.)

Answer:

domain = -7<x  range= 0<y

Step-by-step explanation:

3) Find the area of the polygon below. Give your answer as a number with no label. Assume your answer is square meters. (no links please!! i only have 27 points left!! and ip address hackers, i know who you are!!)

Answers

Answer:

32

Step-by-step explanation:

four times eight is 32 therefore area is then 32

a 29 foot rope is cut into 2 pieces. the longer feet is two feet longer than twice the shorter piece. how long is each piece? PLS ANSWER

Answers

Answer:

the short piece is 9 feet and the long piece is 20 feet

Step-by-step explanation:

29-x=2x+2

27=3x

x=9

29-9=20

fr help me plsss. sum of all the answers, also need to round the neatest tenth. I got 11 but somehow it was wrong. Pls help quickly

Answers

Answer:

the answer is 11, tell the teacher

Step-by-step explanation:

Translate each verbal phrase into an algebraic expression:
1. The sum of N and 6 is less than 2.

2. The value X n is greater than 12.

3. The value of P is at most 15.

4. R multiplied by 11 is greater than or equal to 33.

5. 5 subtracted from N is at most 18.

Answers

Answer:

1) N+6<2

2) Xn>12

3) P≥15

4) R times 11≥33

5) 5-N≥18

I think this is the answer :)

Step-by-step explanation:

1.) N+6 < 2
2.) Xn > 12
3.) P < 15 (underline the “<”)
4.) 11R > 33 (underline the “>”)
5.) N-5 < 18 (underline the “<”)

***IT IS VERY IMPORTANT THAT YOU UNDERLINE THE SIGN WHEN STATED OR ELSE THE EQUATION WILL BE INCORRECT BECAUSE THE UNDERLINE SIGNIFIES THAT IT MEANS (less/greater) THAN OR EQUAL TO...

Indicate whether the sentence or statement is true or false.

This figure is a polygon:


Please select the best answer from the choices provided

A. T
B. F

Answers

Answer:

B. false I'm built different

b. can i have brainliest

the problems are in the pictures

Answers

Answer:

6. B) 115

7. B) 180 - (180 - 90 + 30) = x

Step-by-step explanation:

6. B - 117
7. B 180 - (180-90+30) = x

guess my favorite color for brainliest/brainiest ! u can pick 3 times

Answers

Answer:

IՏ IT ᗷᒪᗩᑕK, ᗷᒪᑌᗴ Oᖇ ᘜOᒪᗪ? ᵗʰᵒˢᵉ ᵃʳᵉ ᵐʸ ᶠᵃᵛ ᶜᵒˡᵒʳˢ

Okkkkkk here goes nothing

1. Purple/Violet
2. Turquoise or like a green-blue
3. Red

helllllllllllp me pls

Answers

Answer:

Group A

Step-by-step explanation:

group A I think i’m not to sure tho

Can someone PLEASEEEE help with this and dont forget the step by step solution i wanna LEARN how to do it

Answers

Answer:

Right Triangle

Step-by-step explanation:

This triangle is right because it has a right angle and all the angles add up to 180°.

Answer:

They mean what type of triangle is it and because there is a 90 degree angle it is a right triangle.

Step-by-step explanation:

This is another question i need help with.

Answers

Answer:

C, this diagram will show 2 1/3- 2/3 which is 7/3-2/3 which is 5/3 which is 1 2/3

Step-by-step explanation:

The answer is C! Hope this helps

picture of the question below

Answers

6x6x10=360 you have to multiply all sides
To answer this you must split the shape into 2 other shapes at least this how I do it

First do the square 6x6=36
Then do the 2 triangles
3x10=30
(Normally you would divide the answer by 2 since a triangle is half of a square but since there is another triangle this is not needed)
After that add the area of the square to the area of the 2 triangles and your answer is 66

more plz help i kinda suck at dependent and independent

Answers

Answer:

I think T is the independant and B is the dependant

Step-by-step explanation:

the amount of time they have is not changed, however the amount of bands they can fit into that time slot is undetermined and relies on the time they have

Answer:

the first option

Step-by-step explanation:

independent is something you can change OR determine

dependent is something that will happen BECAUSE of the independent and you can not change it

in this case- the sentence states that " the amount of time that the venue has been reserved for DETERMINES how many bands will play"

You can change or schedule how long you want to reserve the venue but how many bands that will play depends on the independent variable (t)

Thats why it say determines, because (t) determines or changes (b)

(i tried to explain it as much as possible, i hope it makes a little bit of sense)

dinElla’s test grades in her history class are 89, 94, 82, 84, and 98. What score must Ella make on her next test to have a mean test score of 90?

needed on the next test

Answers

Just calculate it hahahaha

Answer:

93

Step-by-step explanation:

help please lol i really need it

Answers

Answer:

its c

Step-by-step explanation:

The answer is C.

The volume of the box Jamie wants to pack in is V=4x3x5=60ft^3

The volume of the big box is V=5x8x4=160ft^3

Let’s check how much is left over.
V(left over)=160-60=100ft^3 (it will fit)

A juice factory offers its juice in both bottles and cans. A class of students on a field trip decides to compare the numbers of cases of bottled juice and canned juice that are packaged each minute. The students count the number of cases that are packaged on each assembly line over several minutes.

What is the unit rate for canned juice, in cases per minute? Explain how you found this unit rate.

Answers

Answer: 50 cases per minute

Step-by-step explanation:

1. Select one of the points on the graph. Let's use (2, 100) in this case.

2. Divide the number of cases (y) by the amount of minutes (x) This means the equation would be 100 ÷ 2.

3. Since 100 cases ÷ 2 minutes = 50 cases per minute, that means that is unit rate, which can be expressed by y = 50x or f(x) = 50x.

50 cases per minute. Hope this helps

Is this one solution, no solution or infinitely many solutions


-2x - 2y = 6

10x + 10y = -30


can someone also tell me how you can find out if the equation has no soultion? ( best explanation gets brainiest)

Answers

Answer:

-2y=2x+6

y=-1x-3

10y= -10x-30

y=-1x-3

Infinitley many solutions

Step-by-step explanation:

plz help!!! due today

Answers

133.3 is your correct answer

Answer:

133.3 is the correct answer

Step-by-step explanation:

Please answer ASAP I will gave brainliest to best answer

Answers

Answer: the next one is a triangle with a  square inside

i think

The temperature in Salt Lake City was -10.6°C. Which absolute value equation best describes how many degrees the temperature was below 0°C?
A) |-10.6| = -10.6
B) |-10.6| = -10
C) |-10.6| = 10
D) |-10.6| = 10.6

I have a feeling that it’s D but at the same time, A...

Repost, links = report to moderators

Answers

The answer to the question is D.
The answer is D to this question

PLEASE HELP!!
Maria wants to solve the following system using the elimination method:

4x + 9y = 59
x + y = 17

What number should the equation x + y = 17 be multiplied by to eliminate y? (4 points)

A. 4
B. −4
C. 9
D. −9

Answers

Answer: D. -9

Step-by-step explanation:

The price of a cell phone model was tracked over a ten-month period. The graph shows the relationship between the price of the phone and the time.



How does part E of the graph relate to the situation?

A.
Part E represents a period when the price was not tracked.

B.
Part E represents a period when the price remained the same.

C.
Part E represents a period when the price decreased at the fastest rate.

D.
Part E represents a period when the price decreased at a slower rate than in part C.

Answers

Answer:

D

Step-by-step explanation:

Part E represents a period when the price decreased, but slower than C. C is a very steep line which means it decreased faster.

The table shows students’ favorite subjects in Mrs. Boggs’ class.

What is the ratio of students who prefer Math to students who prefer Social Studies?

Answers

Answer:

I want to say 5-4 but I COULD BE WRONG

Step-by-step explanation:

Look at how many people chose Math and Social studies

Whatss the Median??????????????????????///

Answers

The median is the middle point in a dataset half of the data points are smaller than the median and half of the data points are larger. To find the median Arrange the data points from smallest to largest. If the number of data points is odd the median is the middle data point in the list.

I WILL GIVE BRAINLIEST!!!!

Answers

Answer:

53.12ft

Step-by-step explanation:

Area of triangle:

The formula to find the area of a triangle is 1/2bh

- We plug in the values given.

1/2 x 8 x 7

Which is 28ft.

Area of semicircle:

The formula to find the area of a semicircle is 1/2[tex]\pi[/tex][tex]r^{2}[/tex]

- We plug in the values given

1/2 x [tex]\pi[/tex] x [tex]4^{2}[/tex]

1/2 x 16[tex]\pi[/tex]

8[tex]\pi[/tex] or 8 x 3.14 = 25.12

                    In order to get the total area of the whole shape we need to add the areas of those two, which will be 25.12 + 28 = 53.12

Answer will 53.13!!!!!!
Other Questions
A scientist performs an investigation in which thermal energy is removed from a sample of a substance. When the substance begins to change from a gas to a liquid, the scientist measures the temperature of the substance. This temperature is the substance's A. melting pointB. freezing point C. evaporationD. condensation In the diagram, AP is a tangent and PBC is a secant in a circle O. If PC = 12 and BC = 9, what is AP? A random sample of 10 fields of corn has a mean yield of 22.5 bushels per acre and standard deviation of 5.84 bushels per acre. Determine the 99% confidence interval for the true mean yield. Assume the population is approximately normal. Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. 85152Find the value of the missing angle Patty has decided to redecorate her room with parallelograms. She finds a piece of fabric with a parallelogram design and makes a tapestry to hang on the wall. The tapestry is a parallelogram with a base of 3 feet and a height of 4 feet.A parallelogram has a base of 3 feet and a height of 4 feet.What is the area of the tapestry? ft2 Lamborghini rental company charges a rate to rent a Lamborghini of $85 plus an additional fee of five dollars per mile you drive a car wouldnt ultimate ticket or geometric sequence best model the situation what explicit formula models the situation how much would you have to pay if you drive 150 miles PLEASE HELP WILL MAKE BRAIN IF YOU HELP! Whoever tells me the correct answer gets brainlest and thanks . please help me thanks! shock is a local contraindication true o false Which of these best completes the diagram? what is the distance between the points (-7,3) and (4,-5) Ohio Swiss Milk Products manufactures and distributes ice cream in Ohio, Kentucky, and West Virginia. The company wants to expand operations by locating another plant in northern Ohio. The size of the new plant will be a function of the expected demand for ice cream within the area served by the plant. A mar-ket survey is currently under way to determine that demand. Ohio Swiss wants to estimate the relationship between the manufacturing cost per gallon and the number of gallons sold in a year to determine the demand for ice cream and, thus, the size of the new plant. The following data have been collected.Plant Cost per Thousand Gallons (Y) Thousands of Gallons Sold (X)1 $1,015 416.92 973 472.53 1,046 2504 1,006 372.15 1,058 238.16 1,068 258,67 967 5978 997 4149 1,044 263.210 1,008 372Total $10,182 3,654.40Required:a. Develop a regression equation to forecast the cost per gallon as a function of the number of gallons produced.b. What are the correlation coefficient and the coefficient of determination? Comment on your regression equation in light of these measures.c. Suppose that the market survey indicates a demand of 325,000 gallons in the Bucyrus Ohio, area. Estimate the manufacturing cost per gallon for a plant producing 325,000 gallons peryear. Based on the timeline, which of the following statements is true? First one near with CORRECT answer yet the brainless!! Which expression is equivaien. to 6 (3x + 4)? Kings were the most powerful group during the Middle Ages. true or false Which of the following is not true about ocean acidification?A) caused by excessive CO2 in the atmosphereB) it decreases concentration of CO32- needed for marine life shell formationC) caused by floodingD it is caused by decreased pH Classify each of the following costs as a product cost or period cost. If it is a product cost, classify it as direct (or indirect) materials, direct (or indirect) labor, or overhead. a. Wheat used to make flour at General Mills. b. Sales commissions paid to sales personnel at Gap retail stores. c. Costs incurred by General Motors to ship automobile seats purchased from the Lear Corporation to GM assembly plants. d. Insurance paid on the Target retail stores in Michigan. Please help I do not know how to do this An open organ pipe emits E (330 Hz ) when the temperature is 26 C. The speed of sound in air is v(331+0.60T)m/s, where T is the temperature in C. Determine the length of the pipe.