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
Flauer [41]
3 years ago
14

A train can travel 744 miles in 3 hours .what is the unit rate that this train is traveling per hour in miles

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0

If the train travels 744 miles in 3 hours then to determine the unit rate the train is traveling per hour you have to divide the miles by the hours, in this case (744 miles)/(3 hours). The final result concludes as 248 miles per hour.

You might be interested in
Help please!posted picture of question
Evgen [1.6K]
The region is in the first quadrant, and the axis are continuous lines, then x>=0 and y>=0
The region from x=0 to x=1 is below a dashed line that goes through the points:
P1=(0,2)=(x1,y1)→x1=0, y1=2
P2=(1,3)=(x2,y2)→x2=1, y2=3
We can find the equation of this line using the point-slope equation:
y-y1=m(x-x1)
m=(y2-y1)/(x2-x1)
m=(3-2)/(1-0)
m=1/1
m=1
y-2=1(x-0)
y-2=1(x)
y-2=x
y-2+2=x+2
y=x+2
The region is below this line, and the line is dashed, then the region from x=0 to x=1 is:
y<x+2 (Options A or B)

The region from x=2 to x=4 is below the line that goes through the points:
P2=(1,3)=(x2,y2)→x2=1, y2=3
P3=(4,0)=(x3,y3)→x3=4, y3=0
We can find the equation of this line using the point-slope equation:
y-y3=m(x-x3)
m=(y3-y2)/(x3-x2)
m=(0-3)/(4-1)
m=(-3)/3
m=-1
y-0=-1(x-4)
y=-x+4
The region is below this line, and the line is continuos, then the region from x=1 to x=4 is:
y<=-x+2 (Option B)

Answer: The system of inequalities would produce the region indicated on the graph is Option B

8 0
3 years ago
Evaluate the function.<br> f(x) = 3x2 + 16<br> Find f(-1)
SIZIF [17.4K]

Answer:

f(-1)=19

Step-by-step explanation:

<u>Evaluating Functions</u>

Given a function y=f(x), evaluate the function for x=a means substituting the variable for the given value.

We have the function:

f(x)=3x^2+16

Find f(-1):

f(-1)=3(-1)^2+16

f(-1)=3(1)+16

f(-1)=3+16

\boxed{f(-1)=19}

4 0
3 years ago
Josh wants to pour 70.83 grams of salt into a container. So far, he has poured 39.1 grams. How much more salt should Josh pour?
nadya68 [22]

Answer:

31.73 grams

Step-by-step explanation:

70.83 g - 39.1 g = 31.73 g

6 0
2 years ago
Which number is in scientific notation
I am Lyosha [343]
The  choice D is in scientific notation 
7.8*10^5
6 0
3 years ago
If someone travels 20km in 30mins, what is their speed?
scoundrel [369]
You are given a distance of 20 kilometers and time of 30 minutes. You are required to find for the speed of the travelling object. The equation for speed is distance over time. Speed is a scalar quantity. It tells you the direction of the travelling object. The solution in this problem is,  

Speed = distance/time
Speed = 20 kilometers / 30 minutes
<u>Speed = 2/3 kilometers per minute or 0.667 kilometers per minute</u>
<span>Therefore, the speed of the object is 0.667 km per minute.</span>
4 0
3 years ago
Other questions:
  • Find the difference- (ab+3a+7)- (-5ab-2)
    8·1 answer
  • A manager samples the receipts of every fifth person who goes through the line. Out of 50 people, 4 had a mispriced item. If 1,5
    14·1 answer
  • What is the exact volume of a sphere that has a radius of 8.4 in.?
    10·1 answer
  • Question 3 (Multiple Choice Worth 6 points)
    6·1 answer
  • Solve this equation, and show work. worth 40 points.
    8·1 answer
  • Select the correct answer from each drop-down menu. Gino is buying wood screws at the corner hardware store. The table shows dif
    6·1 answer
  • Which statement correctly describes the end behavior of f(x)=ax+b, where a and b are positive numbers?
    14·1 answer
  • − 10x− 6y= 12 <br> 4x+ 7y=− 14
    13·1 answer
  • Help help help pls pls pls
    13·1 answer
  • Mr. Parker spent $96.30 on 3 hats and 6 key chains. if each hat cost $15.50 how much did each key chain cost?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!