Mathematics Middle School

A backpacker started his day at an elevation of x feet above sea level. After a day of hiking, the backpacker was at sea level.Which equation models this situation? (asap, thanks.)

A. x + 0 = 0

B. x + x = 0

C. 0 - x = x

D. x + (-x) = 0

Answers

Answer 1
D. x + (-x) = 0

That is the answer because if you are x feet above sea level, to get back to sea level, which equals zero (0), you need to go down the same amount you went up (x), so you need to go down x feet (-x).
Answer 2
my guess is that your answer D :)

Related Questions

Simplify 2(6x+21)+14

Answers

12x+56 is the simplified form
(12x+41)+14

Just multiply the 2 into the parenthesis

Can 9/12 be simplified

Answers

yes. 

9/12 can be simplified to 3/4

(divide by 3 top & bottom)

hope this helps
Yes they can. When it comes to simplifying fractions, whatever you do to the numerator, you must do to the denominator. With this fraction, we can divide both the top and bottom by 3 to get 3/4. 9/12 is 3/4 in simplest form.

25% of all the seats in the auditorium is 37 shares the total number of seats in the auditorium is

Answers

The number of seats in the first row is 18;
The number of seats in the second row is 18+2=20;
The number of seats in the third row is 18+2*2=22;
The number of seats in the fourth row is 18+3*2=24;
...
The number of seats in the nth row is 18+(n-1)*2.

Notice that if we knew the total number of rows we would be able to sum the number of seats in each row and get the total number of seats.

(1) The number of rows of seats in the auditorium is 27. Sufficient.
(2) The number of seats in the last row is 70 --> 18+(n-1)*2=70, where n is the number of rows. We can get n. Sufficient.

Answer: D. 

Simplify the following expression by combining like terms: 2x⋅2x⋅7x

11x

4x+7x

28x3

28x

Answers

The correct answer would be C.

28x^3

Hopefully this Helped!:)

it total revenue is $3000, cost of goods is $1500, and total selling expenses is $500 what is the Profit for the business

Answers

$3000- $1500= ?... ?- $500= your answer
Hope this helped if you need more help let me know and i will explain more
Hello!

To find your answer, you simply need to subtract:

3000 - 1500 = 1500

1500 - 500 = 1000

So, the profit for the business is $1000.

I hope this helped you! :)

create a slope that will be parallel to the slope provided which is 5/9 what is the parallel slope?

Answers

parallel lines have the same slope so 5/9 would be the answer 

Answer:

The parallel slope would be 5/9

Step-by-step explanation:

Parallel lines have the same slope. So, if the original line had a slope of 5/9, the new line would also have that slope.

converting percent into decimals

Answers

To convert a percent to a decimal, you move the the decimal left two places to convert the percent to a decimal. For example, if you were to convert 14% to a decimal, you move the decimal left two places so that 14% converted to a decimal would look something like this: 0.14

Percent means per 100 so 40% 40 per 100, or simply 40/100

When we divide 40 by 100 we get 0.4 which is a decimal number.

to convert from percent to decimal you have to divide by 100, and then remove the % sign.

Jenna read 25 pages of a book in 30 minutes at the same rate how many pages can she read in 3 hours

Answers

• Convert 3 hours into minutes: 3 x 60(minutes in an hour) = 180 minutes
• Divide to see how many times 30 minutes goes into 180: 180 ÷ 30 = 6
• Multiply: 25 x 6 = 150 

So, Jenna can read 150 pages of a book in 3 hours. Hope this helps! :D

~PutarPotato

Order the number from least to greatest. 1/2, 0.55, 5/7. TELL ME FAST!!!

Answers

It is the order you have there: 1/2, 0.55, then 5/7
1/2 is also known as 0.5, and 5/7 is 0.71, so we’ll use that.
Think of these numbers without the decimal. 50 is less that 55, and 55 is less than 71.
So, the answer would be: 0.5 (aka 1/2), 0.55, and 0.71 (aka 5/7).

Hope that helped! :)

You eat 3 8 of a pie and your sister eats 1 4 of the pie. Explain who ate more of the pie

Answers

First, you need to find a common denominator, you should get 2/8 and 3/8. So, you ate more of the pie
You ate more of the pie, the reason this is the case is because you ate 1.5 fourths of the pie. In order to solve these types of problems, you need to make the divisors of the amount of the pie you ate the same. in order to do this, we need to make 8 become 4, to do this we need to divide 8 by 2 which gives us four, remember what you do to the top of the fraction you MUST do to the bottom, which means that we need to divide the bottom by 2 which gives us 1.5.
We could also make the divisor of the fraction that expresses the amount of pie your sister ate 8 instead of making the other divisor 4. In order to do this, we must multiply 4 by 2 to give us 8, remember what we do to the top of the fraction you MUST do to the bottom, so we multiply the bottom by 2 giving us 2/8. You ate 1.5/4 and your sister ate 1/4 or your sister ate 2/8 and you ate 3/8. You ate more of the pie. I hope that this helped you out.

What is an intersection point?

Answers

An intersection point is a point where two lines meet.
A point on a on two lines that are on the same plane that pass through each other
hope this helps

Suppose △PKN≅△BGH△PKN≅△BGH. Which other congruency statements are correct? Select each correct answer. △NKP≅△HBG△NKP≅△HBG △KPN≅△BHG△KPN≅△BHG △NPK≅△HBG△NPK≅△HBG △KNP≅△GHB

Answers

Answer:

△NPK≅△HBG; and △KNP≅△GHB

Explanation:

Using the given congruence statement, we can determine corresponding pieces of the triangles:

P corresponds to B; K corresponds to G; and N corresponds to H.

This means that △NKP≅△HGB, not HBG.

△KPN≅△GBH, not BHG.

△NPK≅△HBG; this is correct.

△KNP≅△GHB; this is correct.

Answer: k12 answers have a nice day!!!

Step-by-step explanation:

120% of 33 is what number?

Answers

Change 120% into a decimal using the DP rule. D stands for decimal and P stands for percent. If you are trying to change a percent into a decimal then move the decimal spots two spaces to the right, but if you are changing a decimal into a percent then you move the decimal two spaces to the right. In this case we have to move the decimal two spaces to the left. Imagine in a percent that there is an imaginary decimal on the right of the 0 in 120 so when you move the decimal to the left it will become 1.20. Now multiply 1.20 and 33 which should give you an answer of 39.6 .
The answer is simply 39.6

How do you write 5.8 as a percentage

Answers

Multiply 5.8 by 100 to convert to percent:

5.8 × 100 = 580 %
580%, hope this helps!

the price of a fan is 15 dollar the price is 27% lower than last week

Answers

$55.56 - $40.56 = $15
100% 73% 27%
^ ^
last week this week

What is the median and mode

Answers

Median is the middle number

60, 60, 65, 70, 70, 85, 90

70 is your median

mode is the number(s) that show up the most
60 and 70 is your mode, since they show up twice (one more than the others)

Range is largest number minus the smallest
90 - 60 = 30, 30 is your range

Mean is all the numbers added together divided by the number of numbers there are 
60 + 90 + 65 + 70 + 70 + 85 + 60 = 500
500/7 = 71.42
Mean = 71.42

hope this helps

The sun produces 3.8x10^27 joules of energy per second. How much energy is produced in a year? (Note: a year is approximately 31,000,000 seconds.) Put it in scientific form.

Answers

If you're talking about the 'scientific notation', the answer would be (3.800000000000000000000000000, 26 zeroes.) 

Answer: About [tex]\approx1.178\times10^{35}[/tex]

Step-by-step explanation:

Given : The sun produces[tex]3.8\times10^27[/tex] joules of energy per second.

It is also given that a year is approximately 31,000,000 seconds.

In scientific notation , it can be written as [tex]3.1\times10^7[/tex]

Then , the amount of energy is produced in a year will be :-

[tex]3.8\times10^{27}\times3.1\times\times10^7\\\\=3.8\times3.1\times10^{27}\times10^7\\\\=11.78\times10^{27+7}\\\\=11.78\times10^{34}=1.178\times10^{35}[/tex]

Hence,  the amount of energy is produced in a year  [tex]\approx1.178\times10^{35}[/tex]

A piece of carpet is 8 feet wide and 12 feet long. The carpet needs to be reduced by a scale factor so that the reduced carpet is 2 feet wide. What is the area of the reduced carpet

Answers

6 feet because 8 / 12 reduces to 2 / 3 and you multiply 2 times 3
Hi there.

So, we've got the dimensions. 

l = 12, w = 8

We know that the width has been divided by 4. That means we also divide the length by 4. This gives us the new dimensions of:

l = 3, w = 2

A = lw 

3 · 2 = 6 ft²

Cheers~


Carmen, Reuben, and Bob have a total of $133 in their wallets. Bob has 3 times what Reuben has. Carmen has $8 more than Reuben. How much does each have?

Answers

So you will want to form a few equations. The first one is:
C+R+B=133
Then you will want to form an equation for Bob:
B=3R
Then, another for Carmen
C=R+8

Knowing this information, you can plug each in, solving for R.

R+8+R+3R=133      Now Solve
5R+8=133               Subtract 8 from both sides
5R=125                   Divide 5 from both sides
R=25                       Now substitute R in for Carmen and Bob equations.

R=25                        Reuben has $25
C=8+25                    Add
C=33                        Carmen has $33
B=3(25)                    Multiply
B=75                        Bob has $75

Check answer:

25+33+75=133
133=133

I hope this helps!

Melissa’s family is driving out of state to her grandmother’s house. They know that it takes 20 gallons of gas to get there, and the cost of three gallons of gasoline is $10.50. How much should the family budget to make the one-way trip? $20.00

Answers

3 gallons cost 10.50

20 gallons / 3 = 6 2/3

6 2/3 * 10.50 = 70

 they need $70 for the trip

What is the value of 48x +35. When x=2

Answers

48x + 35
x = 2
plug in 2 for x
48(2) + 35
multiply 2 and 48 together
48 x 2 = 96
add the product (96) with 35
96 + 35 = 131
answer is 131


131 is your answer

hope this helps
48x + 35 = ?
48 x 2 + 35 
96 + 35 =
131
I hope this helps
Please make me brainliest

Doug dives from a platform that is 5 meters above water. His dive takes him 2.6 meters below the surface of the water. How far does Doug's dive take him?

Answers

The total distance Doug dives from the platform to the under the water is  7.6 meters.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, Doug dives from a platform that is 5 meters above the water.

His dive takes him 2.6 meters below the surface of the water.

∴ To find the total distance Doug dived we have to sum the height of the platform above water and the distance which he dived below the water,

= (5 + 2.6) meters.

= 7.6 meters.

learn more about numerical expression here :

https://brainly.com/question/14642484

#SPJ5

Nathan and Sydney start out together on a bike trail that is 24 miles long. Nathan bikes at 88 miles per hour while Sydney bikes at 12 miles per hour. Which statement is true?

Answers

sydney is true because the bike trail is no longer than 24 miles


Sydney is true because 88 miles is longer than 24 miles

Let a and b stand for two different rational numbers. If |a| > |b| then what else must be true?

Answers

a is farther from 0 then b is

Quadrilateral ACEG≅ Quadrilateral MNPR

Which statement is true?

Answers

Line CE is congruent to line NP is the true statement.

How do you solve this using the elimination method of systems of equations?

Answers

Easiest approach:  Mult. the first eqn by 2; this results in 10x - 2y = 12.  To this new equation, add the second equation:

10x - 2y = 12
 5x  + 2y  = 3
-------------------
15x        = 15, so x = 1.  Subst. 1 for x in either of the given equations, and then find y from the resulting equation.

Write your solution in the form (1, ? ).
Answer: 5x - y= 6 ×5 ------- equation 1 5x+ 2y=3 ×5-------- equation 2 -------------

25x - 5y= 30

- 25x + 10y=15

------------------

-5y-(+10y)=30-15

-5y-10y =15

-15y= 15

divide both sides by -15

y= -1

finding the value of x by subs. y=-1

into equation 1

5x-(-1)=6

5x +1=6

5x=6-1

5x=5

divide both sides by 5

x= 1

is the product of a fraction less than 1 and a whole number greater than or less than the whole number? explain

Answers

It depends, if the numerator is greater than the denominator, the product will be greater. If not, the product will be less than the whole number. If the fraction is equal to one,(ex. 2/2,50/50,-2/-2), then it would be equal.

Multiplying a fraction less than 1 with a whole number produces a result that is less than the original whole number because you are taking a portion of it.

The product of a fraction less than 1 and a whole number is always less than the original whole number. To understand why, consider the fraction as a part of the whole. If you multiply the whole by a part less than the whole (a fraction less than 1), you're essentially taking only a portion of it, which must logically be smaller than the whole itself.

A race car can travel 615 miles in 3 hour.A small jet can travel 575 miles in 2.5 hours.write and solve an equation to determine if the car or jet travels at a faster rate

Answers

car:
615/3= 205
the car travels 205 miles per hour.
jet:
575/2.5= 230
the jet travels 230 miles per hour.
the jet travels at a faster speed.
Final answer:

To compare the rates of travel of a race car and a small jet, divide the distance traveled by the time taken for each. The small jet travels at a faster rate than the race car.

Explanation:

To determine which travels at a faster rate, we need to compare their rates of travel. The rate of travel is found by dividing the distance traveled by the time taken. Let's denote the rate of the race car as 'r1' and the rate of the small jet as 'r2'.



For the race car, we have r1 = 615 miles / 3 hours = 205 miles per hour.



For the small jet, we have r2 = 575 miles / 2.5 hours = 230 miles per hour.



Comparing the rates, we see that the small jet travels at a faster rate than the race car.

Learn more about Comparing Rates of Travel here:

https://brainly.com/question/33598980

#SPJ2

Which is an inccorect rounding of 53.864

Answers

from your options the answer is 50.

what is 4018 divide by 82

Answers

the answer is of 4018 divided by 82 is 49
4018 / 82 = 49


Hope this helps
Other Questions
Why does bolivar believe that spain's efforts to hold on to its american territories are doomed?? Which of the following best summarizes the conversation between Elisa and Henry? The only Central American country with a long history of democratic government is A. Belize. B. Guatemala. C. Costa Rica. D. Nicaragua. John Tucker is interested in purchasing stock. He wants to determine the costs. What were the results of the air war and the Battle of the Atlantic? What conflict did the Framers resolve by choosing a bicameral legislature? which of the following statements about single-member districts is true Please help with this English question, I WILL give 50 points and brainliest for the best answer!!!!! An object is dropped onto the moon (gm = 5 ft/s2). How long does it take to fall from an elevation of 250 ft.? What term indicates a free tempo that alternately speeds or slows to add expression? PLZ HELP! I WILL GIVE BRAINLIEST OR WHATEVER U PPL WANT JUST HELP!Describe Newton's First Law of motion. Provide an example to support your explanation. Write an equation in point-slope form of the line having the given slope that contains the given point. m=34m=34, (36,24) factor the polynomial completely y^3+6y^2-4y-24 Type of material transport that requires energy from the cell *endocytosis*osmosis*facilitated diffusion*diffusion How many french and americans were there in the battle of yorktown? 6.24 divided by 200 equals what How much money should be invested at 5% interest, compounded quarterly, so that 7 years later the investment will be worth $5000? This amount is called the present value of $5000 at 5% interest. Giambattista bodoni redefined letterforms, giving them a more mathematical geometric , mechanical look, his typeface design exemplifies the _______ style. which of the following sentences is written in the active voice Please help! Which type of rock would be most likely to contain fossils? A. igneousB. sedimentary C. metamorphic.(They didn't have the topic I needed so I picked randomly). Steam Workshop Downloader