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
ruslelena [56]
3 years ago
15

Can someone please answer these questions?

Mathematics
1 answer:
andrew11 [14]3 years ago
8 0

5.a) since the distance is 140km, and the time is 2hours, and we need the speed in km/h,  we have to divide the distance by time, and we will get the speed: s=d/t = 140km/2h = 70km/h

b) the distance is 43km, and the time is 30 minutes, which is 0,5hours, we do the same thing here, with given formula : s=d/t = 43km/0,5h = 86km/h

You might be interested in
Point-Slope Form<br> *See photo*
Ne4ueva [31]

Answer:

y = 3x - 5

Step-by-step explanation:

We know that the equation 'y = 3x + ?' intersects the point (1, -2). This means that when x = 1, y = -2 in out equation above. To solve this just plug in the x and y values to get '?'.

y = 3x + ?\\-2 = 3(1) + ?\\-5 = ?

Now that we know '?' is -5, we write it back into slope intercept form, so our final answer is y = 3x - 5

4 0
2 years ago
When comparing the functions using the equation, which conclusion can be made?
ankoles [38]

Answer:

  domain of f(x) is x ≤ 0; domain of f^-1(x) is x ≥ 4

Step-by-step explanation:

The square root function will always give a positive value, so the opposite of the square root function will give non-≤positive values. That means ...

  • the domain of f(x) is restricted to non-positive values
  • the domain of the inverse function is restricted to values of x that make the root be of a non-negative number: x ≥ 4

The domain of f(x) is x ≤ 0; the domain of f^-1(x) is x ≥ 4.

8 0
3 years ago
Paula skates 2 miles in 13 hour. How many miles does she skate in 1 hour?
lilavasa [31]

Answer:

2/13 of an hour

Step-by-step explanation:

3 0
3 years ago
If A and B are two points having coordinates (- 2, 2) and (2,-4) respectively, find the coordinates of P such that AP= AB.​
Karo-lina-s [1.5K]

Answer:

(0,1)

Step-by-step explanation:

The mid point of A(-2,2) and B(2,-4) is the coordinates of point P, which is (x,y)

Hence, the line AB = AP + PB.

At point AP: x = (-2+2)/2 = 0

also, point PB: y = (2 - 4)/2 = -1

Therefore, coordinates of point P = (0,-1)

7 0
3 years ago
Equation of the line that contains the point (-9,2) and is perpendicular to the line y=-3/2x-3
lilavasa [31]

Answer:

y=2/3x+8

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • What is the probability that a randomly selected child from this group will have red hair, given that he has straight hair? (Ent
    9·1 answer
  • (3x + 20) (5x) find x
    14·1 answer
  • Afflatus is a BIG brain
    11·2 answers
  • How do you solve radical 2x plus 5 equals x?
    15·2 answers
  • Is 2/15 closer to 0, 1/2, or 1
    15·1 answer
  • Does this set of ordered pairs represent a function? Why or why not. Don’t need a step to step just the answer
    5·2 answers
  • Prove <img src="https://tex.z-dn.net/?f=%5Clim_%7Bx%20%5Cto%200%7D%20%5Cfrac%7Bsin%20x%7D%7Bx%7D%20%3D%201" id="TexFormula1" tit
    15·1 answer
  • A coordinate plane with Number of Text Messages on the x-axis and Number of Minutes Used on the y-axis, with points plotted at,
    8·2 answers
  • A container of chocalates has a ratio of dark to milk chocolates of 3 to 5. If you have 18 dark chocolates, then how many milk c
    14·1 answer
  • Which settlers were taught by members of the powhatan confederacy to plant tobacco?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!