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
torisob [31]
3 years ago
15

The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and

found that it could be modeled using the equation f(x) = –0.3x2 + 2x, where f(x) is the height of the path of the water above the ground, in feet, and x is the horizontal distance of the path of the water from the end of the hose, in feet.
When the water was 4 feet from the end of the hose, what was its height above the ground?

A. 3.2 feet
B. 4.8 feet
C. 5.6 feet
D. 6.8 feet

Mathematics
2 answers:
Kazeer [188]3 years ago
6 0
The problem above can be modelled as shown in the graph below

At x=4, the height of the water from the ground is
f(4)=-0.3 (4)^{2} +2(4)
f(4)=3.2 ft

Feliz [49]3 years ago
4 0

Answer:

The answer is 3.2

Step-by-step explanation:

I can't explain it very well but A is the answer.

You might be interested in
ABCD is a rectangle. What is the value of x?
ankoles [38]

Answer:

B

Step-by-step explanation:

Use the pythagorean theorem

a² + b² = c²

a² + 63² = 65²

a² + 3969 = 4225

a² = 256

a = 16

x = 16 meters

7 0
3 years ago
Read 2 more answers
Simple interest I in dollars is calculated using the formula I=​prt, where p represents the​ principal, or amount in dollars tha
Sergeeva-Olga [200]

and we do this one the same way as the other.


\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad  \begin{cases} I=\textit{interest earned}\dotfill&\$540\\ P=\textit{original amount deposited}\dotfill & \$4800\\ r=rate\to 4.5\%\to \frac{4.5}{100}\dotfill &0.045\\ t=years \end{cases} \\\\\\ 540=(4800)(0.045)t\implies \cfrac{540}{(4800)(0.045)}=t\implies 2.5=t

8 0
3 years ago
Read 2 more answers
Four randomly chosen Nevada students were asked how many times they drove to Arizona last year. Their replies were 4,5,6,7. The
den301095 [7]

The geometric mean of the numbers is 5.38

Given the values a, b, c and d

Geometric mean of the values will be expressed as:

GM = (abcd)^1/4

Given the values 4, 5, 6 and 7, the geometric mean will be expressed as:

GM = (4×5×6×7)^1/4

GM = (840)^1/4

GM = 5.38

Hence the geometric mean of the numbers is 5.38.

Learn more: brainly.com/question/23875011

8 0
3 years ago
A rain barrel is full of water and used to water the garden. The rain barrel loses water at the rate 2.5 gallons of water per mi
soldier1979 [14.2K]
Answer: <span>y - 37.5 = 2.5 ( x - 7)

Explanation:

1) The point-slope form is has this form:

 y - y1 = m (x - x1)

Where m is the slope or rate of change and x1, y1 are the coordinates of the point.

2) you are told that the the rate of change of water (m) is 2.5

m = 2.5

3) The point is given by that after 7 min the rain barrel contains 37.5 gallons. This is:

x1 = 7
y1 = 37.5

</span>4) Replace those value in the point-slope model:

y - 37.5 = 2.5 ( x - 7)

That is the point-slope model or equation.

4 0
3 years ago
What is the midpoint of (10,6) and (4,9)
Leona [35]

Answer:

The midpoint is (7,7.5)

4 0
3 years ago
Other questions:
  • What is the slope of the line through the points (-2, -1) and (8, -3)
    15·2 answers
  • Lily is 14 older than her little brother Ezekiel. In 8 years, Lily will be twice as old as Ezekiel will be then. What is Lily an
    7·1 answer
  • The system of equations is graphed on the coordinate plane.
    13·1 answer
  • The value of a car decreases by 20% per year Mr. Singh for purchase is a $22,000 automobile what is the value of the car the end
    15·1 answer
  • Janet has $120. If she saves $20 per week, in how many days will she have $500
    9·2 answers
  • Inductive Reasoning<br> Write the next two numbers in the pattern<br> 400, 200, 100, 50, 25,
    9·2 answers
  • Please help! I will vote your answer the best.
    14·1 answer
  • X/3 = 5/x-1 cross multiply
    11·1 answer
  • PLZ HELP. MATH TEST PICK ABC OR D !
    12·2 answers
  • Suppose you draw 8 cards out of a well-shuffled deck of 52 cards, and one-by-one with re-placement, consider X as the number of
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!