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
vredina [299]
3 years ago
13

Courtney is flying a kite and 125 ft of the string is let out. The angle of elevation between the kite and the ground is 48°. Fi

nd the approximate height of the kite.
Mathematics
1 answer:
Aneli [31]3 years ago
7 0

Answer:

rrrrrrreeeeeeeeeee

Step-by-step explanation:

jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

You might be interested in
I'm triggered rn plz help with 1,3,4,5 XD
Norma-Jean [14]
I found out 1 is:
3 cups of apple juice (let me know if you need the work)
P.S. I'm working on the other questions
3 0
4 years ago
Solve Using Dirac Deltla/discontinuous forcing
Jet001 [13]

Let A(t) denote the amount of salt in the tank at time t. We're told that A(0)=0.

For 0\le t\le15, the salt flows in at a rate of (1/5 lb/gal)*(5 gal/min) = 1 lb/min. When the regulating mechanism fails, 20 lbs of salt is dumped and no more salt flows for t>15. We can capture this in terms of the unit step function u(t) and Dirac delta function \delta(t) as

\text{rate in}=u(t)-u(t-15)+20\delta(t-15)

(in lb/min)

The salt from the mixed solution flows out at a rate of

\text{rate out}=\left(\dfrac{A(t)\,\mathrm{lb}}{50+(5-5)t\,\mathrm{gal}}\right)\left(5\dfrac{\rm gal}{\rm min}\right)=\dfrac A{10}\dfrac{\rm lb}{\rm min}

Then the amount of salt in the tank at time t changes according to

\dfrac{\mathrm dA}{\mathrm dt}=u(t)-u(t-15)+20\delta(t-15)-\dfrac A{10}

Let \hat A(s) denote the Laplace transform of A(t), \hat A(s)=\mathcal L_s\{A(t)\}. Take the transform of both sides to get

s\hat A(s)-A(0)=\dfrac1s-\dfrac{e^{-15s}}s+20e^{-15s}-\dfrac1{10}\hat A(s)

Solve for \hat A(s), then take the inverse of both sides.

\hat A(s)=\dfrac{\frac{10-10e^{-15s}}{s^2}+\frac{200e^{-15s}}s}{10s+1}

\implies\boxed{A(t)=10-10e^{-t/10}+\left(30e^{3/2-t/10}-10\right)u(t-15)}

7 0
4 years ago
What are the two constants of proportionality for the relationship between distance in kilometers
andrezito [222]
We call the ratio between two directly proportional quantities the constant of proportionality. When these two quantities may increase or decrease, the constant proportionality always remains the same
5 0
3 years ago
Plz help me well mark brainliest if correct ...?????.
jasenka [17]

Answer:

Apples

Step-by-step explanation:

8 0
3 years ago
Find the lengths of the segments with variable expressions
nlexa [21]

Answer:

EF = 7 units

AD =  3 units

BC =  11 units

Step-by-step explanation:

Since it is an isosceles trapezoid and the midsegment is x, the sum of the bases divided by 1/2 is the value of the midsegment, x.

x = 1/2(x-4 + 2x-3)

x = 1/2x - 2 + x - 1 1/2

x = 1 1/2 x - 3.5

-1/2 x = -3.5

x = 7 units

EF = 7 units

AD = 7-4 = 3 units

BC = 2(7) - 3 = 11 units

5 0
3 years ago
Other questions:
  • Solve for q<br> (Please show all work thank you:))
    12·1 answer
  • X squared plus 5x=126. What is X?
    9·1 answer
  • booker has a bag of marbles.there are 10 marbles 6 yellow marbles and 4 red marbles .book 4 teacher reaches into the bag without
    8·2 answers
  • PLEASE HELP RIGHT AWAY!!
    13·2 answers
  • What are the domain and range of the function on the graph​
    8·1 answer
  • I need help with this math problem so can anyone help me with it <br>​
    6·1 answer
  • Kacey bought 24 roses for $60.96, tax included. How much did each rose cost?
    12·1 answer
  • This is the question​
    14·2 answers
  • Ben takes out a personal loan of £1200 with a simple interest rate of 20% for a term of 3 years how much is the total cost of th
    7·1 answer
  • If the inequality contains &lt; symbol, then graph the equation using a _______________ line.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!