All categories

3 years ago

The dot plot shows the number of hours that students spent watching TV.

Mathematics

1 answer:

STALIN [3.7K]3 years ago

5 0

Answer:

B C and D

Step-by-step explanation:

common sense

You might be interested in

The difference between a larger multiple of 4 and a smaller multiple of 4, is again a multiple of...

r-ruslan [8.4K]

Answer:

Hope that helps!

Step-by-step explanation:

8 0

3 years ago

Two particles move in the xy-plane. At time t, the position of particle A is given by x(t)=5t−5 and y(t)=2t−k, and the position

Ipatiy [6.2K]

Answer:

Part A) Not collide

Part B) k = 4

Part C) Particle B is moving fast.

Step-by-step explanation:

Two particles move in the xy-plane. At time, t

Position of particle A:-

$x(t)=5t-5$

$y(t)=2t-k$

Position of particles B:-

$x(t)=4t$

$y(t)=t^2-2t+1$

Part A) For k = -6

Position particle A, (5t-5,2t+6)

Position of particle B, $(4t,t^2-2t-1)$

If both collides then x and y coordinate must be same

Therefore,

For x-coordinate:

5t - 5 = 4t

t = 5

For y-coordinate:

$2t+6=t^2-2t-1$

$t^2-4t-7=0$

$t=-1.3,5.3$

The value of t is not same. So, k = -6 A and B will not collide.

Part B) If both collides then x and y coordinate must be same

For x-coordinate:

5t - 5 = 4t

t = 5

For y-coordinate:

$2t-k=t^2-2t-1$

Put t = 5

$10-k=25-10-1$

$k=4$

Hence, if k = 4 then A and B collide.

Part C)

Speed of particle A, $\dfrac{dA}{dt}$

$\dfrac{dA}{dt}=\dfrac{dy}{dt}\cdot \dfrac{dt}{dx}$

$\dfrac{dA}{dt}=2\cdot \dfrac{1}{5}\approx 0.4$

Speed of particle B, $\dfrac{dB}{dt}$

$\dfrac{dB}{dt}=\dfrac{dy}{dt}\cdot \dfrac{dt}{dx}$

$\dfrac{dB}{dt}=2t-2\cdot \dfrac{1}{4}$

At t = 5

$\dfrac{dB}{dt}=10-2\cdot \dfrac{1}{4}=2$

Hence, Particle B moves faster than particle A

8 0

3 years ago

HELP PLEASE

Luden [163]

The answer is the multiplicative rate of change of the function is 5

3 0

3 years ago

A seven letter word or phrase used to show division in a word problem.

gizmo_the_mogwai [7]

Answer:

You can use the below words

Step-by-step explanation:

Divided by or quotient of

7 0

3 years ago

Read 2 more answers

Rachel's credit card billing statement says she owes $350 for purchases last month. Her minimum monthly payment is $25. If she d

madreJ [45]

Answer:

number one

Step-by-step explanation:

7 0

3 years ago