answer.
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
GaryK
15 days ago
10

A hot air balloon descends to the ground. The function a(t) = 210 – 15t can be used to describe the altitude of the balloon as i

t approaches the ground. The time is in minutes.
What does t represent?
altitude of the balloontime after the balloon begins to descendtime it takes the balloon to reach the ground

What does a(t) represent?
altitude of the balloontime after the balloon begins to descendtime it takes the balloon to reach the ground

What information will a(5.5) give?
time it takes the balloon to reach an altitude of 5.5 feetaltitude of the balloon after 5.5 minutestime it will take the balloon to reach the ground, or 5.5 minutes
Mathematics
2 answers:
tester [3.9K]15 days ago
7 0

a(t) = 210 - 5t

(1) What does t represent?

Since t is given in minutes, it stands for time.

Interpreting t as the balloon’s altitude is incorrect since a(t) represents altitude.

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

Time elapsed since the balloon starts descending

This is the correct interpretation.

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

Time for the balloon to reach ground level is incorrect because that would be a fixed moment, not a variable t.

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

(2) What does a(t) represent?

The balloon’s altitude

This is the correct answer.

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

Time since descent began is incorrect because that is represented by t.

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

Time to reach the ground is inaccurate since a(t) is altitude, not time.

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

(3) What does a(5.5) signify?

It does not represent the time to reach 5.5 feet altitude.

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

The altitude of the balloon after 5.5 minutes

This is the correct interpretation since a(5.5) is altitude when t = 5.5 minutes.

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

It is not the time needed to reach the ground.

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

5.5 minutes alone is not correct because a(t) denotes altitude, not time.

a(5.5) refers to altitude at t = 5.5 minutes.

PIT_PIT [3.9K]15 days ago
3 0

Answer:

1. The duration since the balloon starts its descent

2. The balloon's elevation above ground

3. The balloon's height after 5.5 minutes of descent

Step-by-step explanation:

You might be interested in
Given: △ABC, m∠A=60° m∠C=45°, AB=8 Find: Perimeter of △ABC, Area of △ABC
Svet_ta [4341]

We are given the triangle

△ABC, with m∠A=60° and m∠C=45°, and AB=8.

To start, we will calculate all angles and sides.

Finding angle B:

The total of all angles in a triangle equals 180.

m∠A + m∠B + m∠C = 180.

Substituting the known values,

60° + m∠B + 45° = 180.

This gives us m∠B = 75°.

Calculating BC:

Using the law of sines,

\frac{AB}{sin(C)}=\frac{BC}{sin(A)}

We can substitute in the values.

\frac{8}{sin(45)}=\frac{BC}{sin(60)}

BC=\frac{8}{sin(45)} \times sin(60)

BC=9.798

Finding AC:

\frac{AB}{sin(C)}=\frac{AC}{sin(B)}

Now we'll input the values.

\frac{8}{sin(45)}=\frac{AC}{sin(75)}

AC=\frac{8}{sin(45)} \times sin(75)

AC=10.928

Calculating Perimeter:

p=AB+BC+AC

We substitute values here as well.

p=10.928+8+9.798

p=28.726

Calculating Area:

Using the area formula,

A=\frac{1}{2}AB \times AC \times sin(A)

we can then insert values.

A=\frac{1}{2}8 \times 10.928 \times sin(60)

A=37.85570...............Answer

6 0
12 days ago
Read 2 more answers
the graph shows your budget and the total cost of x gallons of gasoline and a car wash you want to determine the possible amount
lawyer [4039]

Answer:

Part a) Your budget is $40.

Part b) The price for one gallon of gasoline is $3.55, while a car wash costs $8.

Part c) x \leq 9.01\ gal

Part d) Refer to the explanation below.

Step-by-step explanation:

Please see the complete question in the attached image.

Part a) The budget is expressed by the equation

y = 40

therefore,

Your budget amounts to $40.

Part b) In terms of costs, how much is a gallon of gasoline and what is the car wash price?

Let

y ------> denote the total cost for a gallon of gasoline along with a car wash

x -----> define the volume of gasoline in gallons

We can express the relationship as

y = 3.55x + 8

For calculations, when x = 0, we have:

y = 3.55(0) + 8 = 8

The y-intercept signifies the cost of the car wash, being $8.

Now, to identify the price of one gallon of gasoline:

We know the slope of the linear function is

m = $3.55 per gallon

This confirms that a gallon of gasoline costs $3.55.

Part c) Formulate an inequality representing the potential quantity of gasoline you can purchase:

We have:

3.55x+8 \leq 40

Now, solve for x:

3.55x \leq 40-8

3.55x \leq 32

x \leq 9.01\ gal

Part d) Utilize the graph to determine the solution of the inequality from part c)

We can set up the system:

y = 40

y = 3.55x + 8

The solution lies at the intersection of both graphs. By observing the graph, the intersection appears to be around (9, 40).

This indicates that the maximum volume of gasoline purchasable within your budget is approximately 9 gallons.

6 0
4 days ago
In politics, marketing, etc. we often want to estimate a percentage or proportion p. One calculation in statistical polling is t
Inessa [3926]

Answer:

La conclusión sobre p utilizando una desigualdad de valor absoluto es

0.325 < p < 0.375

Explicación paso a paso:

Según el enunciado, nos informan que

La proporción de la muestra es \r p = 0.35

El margen de error es E = 0.025

El intervalo de confianza se representa matemáticamente como

\r p -E < p < \r p +E

=> 0.35 - 0.025 < p < 0.35 + 0.025

=> 0.325 < p < 0.375

7 0
9 days ago
How do the graphs of the functions f(x) = (Three-halves)x and g(x) = (Two-thirds)x compare?
tester [3938]

Answer:

To summarize the answer:

Step-by-step explanation:

Given:

\bold{f(x)= (\frac{3}{2})^x}\\\\\bold{g(x)= (\frac{2}{3})^x}\\

Here is the graph associated with this question:

The second function, denoted as g(x)= (\frac{2}{3})^x, does not qualify as a function.

Keep in mind that the g(x) function is the inversion of the f(x) function. Recognizing this pattern indicates a reflection on the Y-axis.

Reflection on the axes:

In the x-axis:

Enhance the function by -1 to illustrate an exponential curve around the x-axis.

In the y-axis:

Decrease the input of the function by -1 to depict the exponential function around the y-axis.

8 0
12 days ago
Read 2 more answers
Raymond can paint 5/8 of a wall in 16minutes. How long would it take him to paint 1/3 of a wall?
PIT_PIT [3949]

Answer:

128/15 minutes or 8.5 minutes

Step-by-step explanation:

Utilizing the unitary method,

The duration to paint 5/8 of the wall is 16 minutes.

Consequently, the time to paint the entire wall is calculated as 16 × 8/5.

Thus, the time required to paint 1/3 of the wall amounts to 16 × 8/5 × 1/3.

4 0
6 days ago
Other questions:
  • Which is equivalent to sin 51°?<br><br>A) cos 51°<br>B) cos 39°<br>C) tan 39°<br>D) tan 51°​
    5·1 answer
  • A middle school chess club has 5 members: Adam, Bradley, Carol, Dave, and Ella. Two students from the club will be selected at r
    5·1 answer
  • g European roulette. The game of European roulette involves spinning a wheel with 37 slots: 18 red, 18 black, and 1 green. A bal
    5·1 answer
  • Last year, sales at a book store increased from $5,000 to $10,000. This year, sales decreased to $5,000 from $10,000. What perce
    9·2 answers
  • you buy 6 notebooks, 10 folders, 1 pack of pencils, and 1 lunch box for school. after using a $10 gift card, how much do you owe
    11·1 answer
  • Fire load (MJ/m2) is the heat energy that could be released per square meter of floor area by combustion of contents and the str
    12·1 answer
  • David read 69 books in a 12-month period. Sarah read 54 books in the same period of time. How many more books per month did Davi
    10·2 answers
  • What is the range of the function represented by the graph?
    9·2 answers
  • Mike has coffee worth $4 per pound that he wishes to mix with 20 pounds of coffee worth $7 per pound to get a mixture that can b
    5·1 answer
  • Model Exponential Growth Question :A sample of bacteria is growing at a continuously compounding rate. The sample triples in 10
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!