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
mylen [45]
4 years ago
12

Physical science : Find the speed of an object that covers 400 km in 5 hr.

Mathematics
1 answer:
statuscvo [17]4 years ago
8 0
speed=distance / time.

Data:
distance=400 Km
time=5 hours.

Speed=400 Km / 5 hours=80 km/hr.


Answer: b. 80 Km/hr.
You might be interested in
Pls help me! And explain how you found the answer pls
Dmitriy789 [7]

Answer:

y = \frac{1}{2} x - 3

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 22, - 14) and (x₂, y₂ ) = (- 18, - 12)

m = \frac{-12+14}{-18+22} = \frac{2}{4} = \frac{1}{2} , thus

y = \frac{1}{2} x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 18, - 12) , then

- 12 = - 9 + c ⇒ c = - 12 + 9 = - 3

y = \frac{1}{2} x - 3 ← equation of line

6 0
3 years ago
The organizer of a television show must select 5 people to participate in the show. The participants will be selected from a lis
Lemur [1.5K]
5/30 But you should say how many young people there are because for all we know all 30 could be young
3 0
4 years ago
Read 2 more answers
Can someone plz help me with this one problem plzzzzz!!!
dimaraw [331]
Yes it does and it would also be true if the y was 4 or 6 because 2 plays into all of those but it would be false if it was something like 5
7 0
3 years ago
Read 2 more answers
Write the standard form of the equation of the line passing through the point ( -3,5) and perpendicular to the line -5x-7y=7.
Free_Kalibri [48]

Answer:

all work is pictured and shown

5 0
3 years ago
What is the twelth square number
GenaCL600 [577]
Twelth square number is the square of 11 that is 121 as 0 is the square of of 0. Than 1=1, 2=4, 3=9, 4=16, 5=25, 6=36, 7=49, 8=64, 9=81, 10=100.
8 0
3 years ago
Other questions:
  • How do i check 1/3v=-5 ?
    13·1 answer
  • If f(x) = one/nine x -2, what is f^-1(x)
    11·1 answer
  • What is missing for the following quantity to be true? (3y*5b)*10 = __(5b*10)
    6·1 answer
  • Graph the equation 2y-6x=10
    5·1 answer
  • Help please (i pressed 0.09 by mistake)
    10·2 answers
  • Is the following relation a function? Two circles are shown, one labeled x and the other labeled y. The x circle contains the nu
    13·1 answer
  • 100 Points!!!!!!! Please Hurry!
    7·2 answers
  • Solve the equation 2x²-x=0
    10·2 answers
  • What is the slope of a line with one point at (6,3) and another point at (8,2)
    8·1 answer
  • What number is its own opposite?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!