1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
nikklg [1K]
3 years ago
8

The linear equation graphed above gives the height in feet above the ground of Shelly t seconds after she opened her parachute w

hen jumping from an airplane. According to the graph, how many seconds after opening her parachute will Shelly be 2,000 feet above the ground?

Mathematics
1 answer:
mars1129 [50]3 years ago
5 0

Answer:

\large \boxed{\text{60 s}}

Step-by-step explanation:

Assume your graph looks like the one below.

1. Calculate the equation of the straight line

The slope-intercept equation for a straight line is

y = mx + b

where m is the slope of the line and b is the y-intercept.

The line passes through the points (0,2600) and (30, 2300)

(a) Calculate the slope of the line

\begin{array}{rcl}m & = & \dfrac{y_{2} - y_{1}}{x_{2} - x_{1}}\\\\ & = & \dfrac{2300 - 2600}{30 - 0}\\\\& = & \dfrac{-300}{30}\\\\& = & \text{-10 ft/s}\\\\\end{array}

(b) Locate the y-intercept

The y-intercept is at 2600 ft

(c) Write the equation for the line

h = -10t + 2600

(d) Calculate the time to 2000 ft

\begin{array}{rcl}h & = & -10t + 2600\\2000 & = & -10t + 2600\\-600 & = & -10t\\t & = & \dfrac{-600}{-10}\\\\& = & \text{60 s}\\\end{array}\\

Shelley will be at 2000 ft 60 s after opening the parachute.

You might be interested in
Is this a reduction or enlargement?
Nesterboy [21]
Enlargement i think so
6 0
3 years ago
Sami's bank account earns 4% simple interest per year. If Sami deposits $500, how much simple interest will she earn in one year
timurjin [86]

Answer:

$20 simple interest.

Step-by-step explanation:

The simple interest that Sami earns is 4% of her deposit since she is trying to find how much she will earn in one year (given that the interest rate is 4% per annum).  

\$500\times4\%=\$20

∴ Sami earns $20 simple interest in one year.

Hope this helps :)

6 0
3 years ago
what is the difference between multiplying fractions and adding/subtracting fractions? complete sentances please
ss7ja [257]

Answer:

See Explanation!

Step-by-step explanation:

When multiplying fractions, you do not need a common denominator, and the entire fraction gets multiplied across, however when adding or subtracting fractions, you must have a common denominator, and then only compute the numerator, as the bases are already the same

7 0
2 years ago
The equation of line CD is y=3x-3. Write an equation of a line perpendicular to line CD in slop-intercept form that contains poi
Svetradugi [14.3K]
Y = -x/3 + b1 = -3/3 + b              
 substitute values of point1 = -1 + b                  
then reduce2 = b                          
 add one to both sides y = -x/3 + 2
8 0
3 years ago
One-step equations: integers 18=a/2
denpristay [2]

Answer:

36

Step-by-step explanation:

18=a/2

2*18=a

36=a

7 0
3 years ago
Read 2 more answers
Other questions:
  • Lesson 13.2 Checkpoint<br> Find the unknown length x in each right triangle, to the nearest tenth.
    14·2 answers
  • explain and illustrate what of means when you find a fraction of another number. what operation do you use when you find parts o
    9·1 answer
  • Rewrite the equation 5x – 8y + 3 = 5x – 7y + 2 into general form (ax + by + c = 0).
    13·1 answer
  • 54 is 75% of what number?
    11·2 answers
  • Find the LCM of 3,18,5
    13·1 answer
  • Paulo tracks his commute time. The coordinate plane below shows some of his commute times in the last two weeks. The xxx-axis of
    8·1 answer
  • Calculate the surface area of the figure below.
    14·1 answer
  • Write as an algebraic expression and then simplify if possible:
    14·1 answer
  • Evaluate the expression.<br> 5 - 2 x 4
    9·1 answer
  • Im doing an extra credit assignment and I need someone to help me solve by substitution method
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!