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
Ilya [14]
3 years ago
15

A train leaves the station at time = 0. Traveling at a constant speed, the train travels 330 kilometers in 3 hours. Answers part

s a and b. A. Write a function that relates the distance traveled d to time t. The function that relates the distance traveled d to the time is.
Mathematics
1 answer:
amid [387]3 years ago
5 0

Answer:

The function that relates the distance traveled d to the time t is

f(t) = 110t, where d = f(t)

Step-by-step explanation:

From the question, we were told that the train is At a constant speed, the train travels 330 kilometers in 3 hours

We were told to write function that relates the distance traveled d to the time t, we can do this by writing a linear equation with those functions

Since we are told that the train travels 330 kilometers in 3 hours, then we can say the train travel (330/3) kilometers in 1 hour which means it travel 110 kilometers in 1 hour

Then d= 110t---------------eqn(1)

If if t = 0, then d = 0, as well since at t=0 the train is at the station

At t = 1 then d = 110.

From equation (1) d can be replaced by f(t) then we have

f(t) = 110t----------------eqn(2)

Now we replace d by f (t), because d = f t):

f(t) = 120t

Therefore, The function that relates the distance traveled d to the time is f(t) = 120t

You might be interested in
Solve the equation. Identify any extraneous solutions
Lelu [443]
Squaring both sides of the given equation:  w^2=7w, or w^2-7w=0.  

w^2-7w=0 can be factored:  w(w-7)=0.  Then, w=7 or w=0.  Both 0 and 7 are solutions of this equation.
4 0
4 years ago
If a man earns $200 for his first 40 hours of work in a week and then is paid one and one half times his regular rate for any ad
Luba_88 [7]
<span>200/40=5 5/2=2.5 2.5+5=7.5 30/7.5 = 4 hours</span>
5 0
4 years ago
Show that every triangle formed by the coordinate axes and a tangent line to y = 1/x ( for x &gt; 0)
vfiekz [6]

Answer:

Step-by-step explanation:

given a point (x_0,y_0) the equation of a line with slope m that passes through the  given point is

y-y_0 = m(x-x_0) or equivalently

y = mx+(y_0-mx_0).

Recall that a line of the form y=mx+b, the y intercept is b and the x intercept is \frac{-b}{m}.

So, in our case, the y intercept is (y_0-mx_0) and the x  intercept is \frac{mx_0-y_0}{m}.

In our case, we know that the line is tangent to the graph of 1/x. So consider a point over the graph (x_0,\frac{1}{x_0}). Which means that y_0=\frac{1}{x_0}

The slope of the tangent line is given by the derivative of the function evaluated at x_0. Using the properties of derivatives, we get

y' = \frac{-1}{x^2}. So evaluated at x_0 we get m = \frac{-1}{x_0^2}

Replacing the values in our previous findings we get that the y intercept is

(y_0-mx_0) = (\frac{1}{x_0}-(\frac{-1}{x_0^2}x_0)) = \frac{2}{x_0}

The x intercept is

\frac{mx_0-y_0}{m} = \frac{\frac{-1}{x_0^2}x_0-\frac{1}{x_0}}{\frac{-1}{x_0^2}} = 2x_0

The triangle in consideration has height \frac{2}{x_0} and base 2x_0. So the area is

\frac{1}{2}\frac{2}{x_0}\cdot 2x_0=2

So regardless of the point we take on the graph, the area of the triangle is always 2.

6 0
3 years ago
During the sixth grade lunch period, Paul asks every third student who enterd the lunchroom a survey question. Which question is
Neko [114]

Answer:

D

Step-by-step explanation:

You would have to eliminate A because the students have not yet been to other school districts especially if it's every third. You would also have to eliminate B because well, there really isnt any other place to eat but the lunchroom because otherwise it might pose a problem, and with C it can be difficult but again, if we were to try to change something the time they take really has no impact. D would have to be the correct answer because every third student will have various favorite lunch items and will ultimately tell the school that the gross macaroni that is like...unedible is bad and needs to be taken out...immediatley.

4 0
3 years ago
Read 2 more answers
PLEASEEE HELP ME I NEED THIS ASAP
Pavel [41]

Answer:

The fourth option is the correct answer

Step-by-step explanation:

The given expression is

-2n(5+n-8-3n)

Given that n=3,We substitute the value of n into the expression and simplify.

This implies that,

-2n(5+n-8-3n)=-2(3)[5+3-8-3(3)]

=-6(5+3-8-9)

=-6(-9)

=54

Hence the answer is 54

6 0
3 years ago
Read 2 more answers
Other questions:
  • PPLEASE HELP!!!!! WHAT IS THE INITIAL VALUE MEAN FOR THIS GRAPH/FUNCTION
    7·1 answer
  • A submarine is 600 feet below sea level. It is rising to the surface at a rate of 15 feet per hour. Which expression represents
    14·1 answer
  • Choose the postulate or theorem when combined with the AAA Postulate for triangle similarity can be used to establish the AA Pos
    10·2 answers
  • for decoration, meg cut out 8 groups of 7 snowflakes each. how many snowflakes did meg cut out in all?
    5·2 answers
  • Which polygon has an interior angle sum of 1080°?
    6·2 answers
  • A piecewise function g(x) is represented by the graph. On a coordinate plane, a piecewise function has 3 lines. The first line h
    8·1 answer
  • Abi is driving from Italy to Paris (Texas, that is). The coordinates are shown below on his map. He knows there is a rest stop b
    13·1 answer
  • Rewrite the given equation in logarithmic form. Then, select all of the equations with an equivalent solution.
    10·1 answer
  • HELP QUICK!! WILL GIVE BRAINILIST<br> Find the value of x in the triangle shown below.
    12·1 answer
  • Solve each question for the variable.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!