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?

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

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.)

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

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

can someone give me answers plzz

solve using elimination:

5x-7y=-16

4x-2y=-20

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

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

Hellppp meeeeeee PLEASEEEEE can y’all help

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

Help I need to do this my 11:59

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

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?

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

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?

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.

what was the first thing that was mad in the history

What are the numbers shown on the number line?



{-5, 2.5, 6}

{-5, 4, 5}

{-4, 2, 6}

{-5, 0, 6}

How do I do this pls help

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

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

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

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

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

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

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?

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!

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?

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.

Can Some One Help Me Please

How do you find the area's square root?