Mathematics Middle School

A hot-air balloon is 1200 feet off the ground and its altitude is slowly changing at a constant rate of −712 feet per second.
How many seconds, s, will it take for the balloon to drop to below 310 feet?

Answers

Answer 1
It will take 2 seconds

Explanation:
1200-712= 488
488-712= -224
Answer 2
It will take 2 seconds

Related Questions

xander walks 389 steps from his house to the toy store .it is 149 steps to elm street.. it is 52 steps from elm street to maple street.

Answers

Answer:

the answer is 590 steps

Step-by-step explanation:

389+ 149+ 52= 590

Answer: mannn if you want me to add it up then its 590 man

Step-by-step explanation: basic addition 389+149+52

Hellppp meeeeeee PLEASEEEEE can y’all help

Answers

Answer:

90

Step-by-step explanation:

11 + 34=45

45+45=90 your welcome

90 is going to be your answer

If Dorie devotes the same number of hours to studying for these three classes each week, what is the total number of hours Kathleen will study over a three week period?

Answers

Answer:

The answer is 17.2 hours

Step-by-step explanation: Because first you add all hours together (which is 86/15) then multiple it by 3 (week) which is 86/5 = 17.2 hours

Can Some One Help Me Please

Answers

both of them are linear

Answer:

Nonlinear.

Step-by-step explanation:

A linear graph would show a straight line in the graph (as shown in Function II). Function I, on the other hand, shows a parabola, which is a nonlinear.

Function I is a nonlinear function.

~

Help please I'm tired and I just need help with this one

Answers

Answer:

My answer would be y=x times 4 because every 4 packs of honey you get, the number goes up times 4.

Example: 4x4=16, 8x4=32

Hopefully that explains it.

y=x•4 because i said so

Jessie typed the first 300 words of her essay in 12 minutes. She then got tired and typed the remaining 300 words of her essay in 15 minutes. what was the average speed of Jessie's typing?

Answers

Answer:

22,22 min

Step-by-step explanation:

Answer:

22.5 words per minute

Step-by-step explanation:

To find the average, you add the words per minute together then divide by two.

300/12+300/15= 45/1

22.5 words per minute

Help I need to do this my 11:59

Answers

Answer:

5

Explanation:

-5=-10+?

     +5

-5=-5

5 because you do -10 and what makes you get to -5? 5 does

what was the first thing that was mad in the history

Answers

The first thing ever made in the history of men (probably in the 4th century) was the invention of a wheel.

Dave builds sheds. The widths of the doorways for the sheds vary with the area of the shed. One of Dave's sheds has an area of 24 square feet and a doorway that is 2 feet wide. Another one of Dave's sheds has an area of 48 square feet and a doorway that is 4 feet wide. What is the pattern rule that Dave uses for the widths of the shed doorways?

Answers

Answer:12 ft long

Step-by-step explanation:

First, divide 24 by 2 and get 12

Second, divide 48 by 4 and also get 12

Last, the answer is 12 ft long

Graph this line using the slope and y-intercept:
y=–2/5x + 6
Click to select points on the graph.

Answers

Step-by-step explanation:

start at the 6 then go down 2 Y and over 5X

Answer:

See explanation below

Step-by-step explanation:

Start at (0,6) which is the y-intercept where b=6, then go down 2 units, and 5 units to the right which represents the slope m=-2/5 and mark that point. Repeat until you feel you're done and then connect the points to form the line of the equation.

For example, the next point after (0,6) would be (5,4) because by going 5 units to the right and 2 units down, we can represent this as (0+5,6-2) which is (5,4). I've attached a graph with some points to help draw the line.

Hope this was helpful!

can someone give me answers plzz

Answers

Answer:

I do not understand that so, sorry!

Step-by-step explanation:

Does not make sense

1:38
2:76
3:114
4:152
5:190
Meaning Tim can’t read 200 words in 5 minutes but he can read 190 in 5 minutes I hope it helped? :)

Could someone help me on my assignment?






its a repost because last time i asked i didnt get a full answer nor was it even correct

Answers

first box (under 1) is 7, next box (above 12.5) is 6.5 and the last box is 16

What is the height of this triangle when the base is 10cm

Answers


Follow lyricalcosplays on TikTok!! xxxx

Oh and the answer is 7

Answer:

I think it would be 7

Step-by-step explanation:

dont quote me on it though.

solve using elimination:

5x-7y=-16

4x-2y=-20

Answers

X=- 4
Y= 0
Hope this helps
X=-4
Y=0
Hope this helps you

Irma works for a service that delivers groceries and pet supplies. She earns a base monthly salary of $1,900. In addition, she gets a commission of 1.8% of the cost of each grocery order, plus a fee of $11 for each delivery of pet supplies.

Part A

How is calculating Irma’s total annual earnings different from calculating earnings based on salary and commission?

Answers

irma’s annual income has the delivery fees already taken out. earnings based on salary and commission is higher becuase fees have not been taken out

Answer:

Irma also gets $11 for each delivery.

Step-by-step explanation:

How do you find the area's square root?

Answers

To find a square root you have to determine the greatest number multiplied by the same number to find the square root for example the square root of 4 would be 2 since if you multiply 2x2 you get for which 2 is the greatest number that can be multiplied by 2 and get 4

How do I do this pls help

Answers

Answer:

Might be wrong, but, Stephan bought the bike and helmet for 115.2$

Step-by-step explanation:

(might be wrong)

$307 and 2 cent i think

A diving board is 12 feet above the ground. The bottom of the pool is 16 feet below the ground. Write and solve an equation that gives the distance from the diving board to the bottom of the pool. Write and solve an equation that gives the distance from the diving board to the bottom of the pool. pls help wit this

Answers

Answer: 12+16=28

Step-by-step explanation: trust me

Wwwwwwwwwwwwwwwwwww

Can like someone help me with O.o.O (order of operations)

Show your work please...thats why I provided a ton of space.

Answers

Answer:

183

Step-by-step explanation:

168+2^3+3^3-20=

Exponents

168+8+27-20

Addition

203-20

Subtraction

183

183 is the answer.

Answer:

10

Step-by-step explanation:

Using the process PEMDAS I got the answer 10.

168÷2^3+3^3-20

There are no parentheses so you solve the exponents first.

168÷8+9-20

Next, we do not multiply which makes division our second step.

This gives us 21+9-20.

Now we add 21+9 which gives us the sum of 30.

30-20 is equal to 10.

This is how I got my answer and I really hope this helps you

I dont understand nothing for math because they teach us hard ways to do it even tho that's how u actually have to do it

Answers

Answer:

First Picture: A

Second Picture: C

Third Picture: B

Forth Picture: C

Fifth Picture: C

Step-by-step explanation:

The order is ACBCC and if it’s not I’m sorry

Write an equation of a line that passes through the point (2,0) and is perpendicular to the line y = − 1/2 x + 3.

Answers

Answer:

Step-by-step explanation:

The answer to your problem is y = 2x - 4

Find each product. Enter your final answer as a simplified fraction. (− 23 ) (− 38 ) ( 89 ) The product is

Answers

unfortunately I cant manage to understand ur question

What are the numbers shown on the number line?



{-5, 2.5, 6}

{-5, 4, 5}

{-4, 2, 6}

{-5, 0, 6}

Answers

Answer:

{-5, 2.5, 6}

Step-by-step explanation:

-5, 2.5, 6 would be correct

ok so....
the numbers to the code are 0 3 3 8 8
the number is less than 50
the value of the hundredths digit is 10 times the value of the thousandths digit
the value of the ones digit is one-tenth the value of the tens digit

Answers

Answer:

300????

Step-by-step explanation:

because you multiply 100 to the number of tens is equal 300 i think

Answer- 300
Multiply 100 to the number of 10s

Need your guyzes halp, no false answers and I will give you most of my points
The bike store marks up the wholesale cost of all the bikes they sell by 30%.

Andre wants to buy a bike that has a price tag of $125. What was the wholesale cost of this bike?
$

If the bike is discounted by 20%, how much will Andre pay (before tax)?
$

How much will the store make off the sale of the discounted bike?
$
Thaks Guys, I purple you!

Answers

Answer$32

Step-by-step explanation:

125 divided by 2 = 31.25 +00.05+32

Answer:

the whole sale price of the bike was $91.15

Step-by-step explanation:

130% = $125

= $125/1.3

= $91.15

Solve the photo please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Step-by-step explanation:

75x + 15= 15(5x+1)
150x + 15= 15(10x + 1)
225x + 15= 15(15x+1)
300x + 15= 15(20x+1)

Hope this helps, sorry if I was to late

9. Andrew was measuring the height of the tree in his yard. Four years after it was planted, the tree was 11 feet tall. Twelve years after the tree was planted, it was 21 feet tall. Assuming the tree was growing at a constant rate, create the equation that models that growth of the tree over time. Show or explain your reasoning. (HINT: Use the two points to find the slope and use point-slope form to create an equation.)

Answers

Answer:

y=10/8x+6

Step-by-step explanation:

This is because when you plot the points you can find the slope by using rise over run and by finding the slope you can find the y intercept and that is all you need for the equation.

Answer:

first it show 11ft over 4 years so do 11/4 the answer would be 2.75 ft every year and to try doing it with the tree in 12 years

Step-by-step explanation:

Lin rode her bike 2 miles in 8 minutes. She rode at a constant speed. Complete the table to show the time it took her to travel different distance at this speed.

Answers

0.25 for the distance and 4 for the elapsed time
4 for the time and 0.25 for the distance

Please help. :( I will be happy with it.....

Answers

A and D is the right answer
I believe that it’s d

Which of the following statements concerning the linear correlation coefficient are true?

I: If the linear correlation coefficient for two variables is zero, then there is no relationship between the variables.
II: If the slope of the regression line is negative, then the linear correlation coefficient is negative.
III: The value of the linear correlation coefficient always lies between –1 and 1.
IV: A linear correlation coefficient of 0.62 suggests a stronger linear relationship than a linear correlation coefficient of –0.82.

I and IV

II and III

I and II

III and IV

Answers

Answer:

I and IV... ig (:

I and IV because i’m very extremely intelligent
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