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
ivolga24 [154]
3 years ago
9

Abdul walks 5km in 35 minutes. How far does he walk in 21 minutes​

Mathematics
2 answers:
AleksandrR [38]3 years ago
7 0

Answer:

1km=7 mins

3km = 21 mins

Step-by-step explanation:

Ber [7]3 years ago
7 0

Answer:

3km

Step-by-step explanation:

divide both by five.

5/5 = 1 (km)

35/5 = 7 (mins)

multiply the 2 so that the minutes is 21

7 x 3= 21 mins

1 x 3 = 3 km

You might be interested in
I need help finding the values of the last boxes shown in the image.
Bingel [31]

The volume of the region R bounded by the x-axis is: \mathbf{\iint_R(x^2+y^2)dA = \int ^{tan^{-1}(4)}_{0} \int^{\frac{2}{cos \theta}}_{0} \ r^3 dr d\theta}

<h3>What is the volume of the solid revolution on the X-axis?</h3>

The volume of a solid is the degree of space occupied by a solid object. If the axis of revolution is the planar region's border and the cross-sections are parallel to the line of revolution, we may use the polar coordinate approach to calculate the volume of the solid.

In the graph, the given straight line passes through two points (0,0) and (2,8).

Therefore, the equation of the straight line becomes:

\mathbf{y-y_1 = \dfrac{y_2-y_1}{x_2-x_1}(x-x_1)}

where:

  • (x₁, y₁) and (x₂, y₂) are two points on the straight line

Thus, from the graph let assign (x₁, y₁) = (0, 0) and (x₂, y₂) = (2, 8), we have:

\mathbf{y-0 = \dfrac{8-0}{2-0}(x-0)}

y = 4x

Now, our region bounded by the three lines are:

  • y = 0
  • x = 2
  • y = 4x

Similarly, the change in polar coordinates is:

  • x = rcosθ,
  • y = rsinθ

where;

  • x² + y² = r²  and dA = rdrdθ

Now

  • rsinθ = 0   i.e.  r = 0 or θ = 0
  • rcosθ = 2 i.e.   r  = 2/cosθ
  • rsinθ = 4(rcosθ)  ⇒ tan θ = 4;  θ = tan⁻¹ (4)

  • ⇒ r = 0   to   r = 2/cosθ
  •    θ = 0  to    θ = tan⁻¹ (4)

Then:

\mathbf{\iint_R(x^2+y^2)dA = \int ^{tan^{-1}(4)}_{0} \int^{\frac{2}{cos \theta}}_{0} \ r^2 (rdr d\theta )}

\mathbf{\iint_R(x^2+y^2)dA = \int ^{tan^{-1}(4)}_{0} \int^{\frac{2}{cos \theta}}_{0} \ r^3 dr d\theta}

Learn more about the determining the volume of solids bounded by region R here:

brainly.com/question/14393123

#SPJ1

5 0
2 years ago
You go to a school dance. There is an entrance fee, and there are slices of pizza for sale. After having 1 slice of pizza, you h
ANEK [815]
Xcubed=y
Each slice was 2$ entrance fee was 4$
4 0
3 years ago
. What is the order of the coordinates in an ordered pair (4, 6)
Harlamova29_29 [7]

Answer:

i lost lots of pts so i had to do it bro

Step-by-step explanation:

im really sorry bb

5 0
3 years ago
A ball is thrown straight out at 80 feet per second from an upstairs window that's 15 feet off the ground. Find the ball's horiz
Alex73 [517]

Answer:

Step-by-step explanation:

In order to find the horizontal distance the ball travels, we need to know first how long it took to hit the ground. We will find that time in the y-dimension, and then use that time in the x-dimension, which is the dimension in question when we talk about horizontal distance. Here's what we know in the y-dimension:

a = -32 ft/s/s

v₀ = 0 (since the ball is being thrown straight out the window, the angle is 0 degrees, which translates to no upwards velocity at all)

Δx = -15 feet (negative because the ball lands 15 feet below the point from which it drops)

t = ?? sec.

The equation we will use is the one for displacement:

Δx = v_0t+\frac{1}{2}at^2 and filling in:

-15=(0)t+\frac{1}{2}(-32)t^2 which simplifies down to

-15=-16t^2 so

t=\sqrt{\frac{-15}{-16} } so

t = .968 sec (That is not the correct number of sig fig's but if I use the correct number, the answer doesn't come out to be one of the choices given. So I deviate from the rules a bit here out of necessity.)

Now we use that time in the x-dimension. Here's what we know in that dimension specifically:

a = 0 (acceleration in this dimension is always 0)

v₀ = 80 ft/sec

t = .968 sec

Δx = ?? feet

We use the equation for displacement again, and filling in what we know in this dimension:

Δx = (80)(.968) +(0)(.968)^2 and of course the portion of that after the plus sign goes to 0, leaving us with simply:

Δx = (80)(.968)

Δx = 77.46 feet

5 0
3 years ago
Need help asap
harina [27]

Answer:

2 hours, 9 minutes (and 19 seconds if u wanna be exact)

Step-by-step explanation:

4 0
2 years ago
Other questions:
  • What is the ordered pair for point K?
    8·2 answers
  • If marie wants to decorate a gift box with ribbon. She measures three pieces that she has with a ruler.They are 32. Centimeters,
    13·1 answer
  • In the diagram of movie theater seats, the incline of the floor, f, is parallel to the seats, s.
    7·1 answer
  • The graph shown represents Tommy’s drive to work as a function of his distance from home over time:
    15·2 answers
  • The systolic blood pressure of 18- year- old women is normally distributed with a mean of 120 mmHg and a standard deviation of 1
    12·2 answers
  • I REALLY NEED HELP PLEASE !!!! 1. Suppose you pay $45.00 for an electronic game that has been discounted 15%. What is the origin
    13·1 answer
  • Round 12,628 to nearest 1,000
    9·2 answers
  • Brian invests £4000 into his bank account.
    6·1 answer
  • Please solve the following question.
    5·1 answer
  • What is the slope <br> 3y = -4x+6
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!