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3 years ago

Two friends are collecting stuffed animals Veronica has 5 more than

Mathematics

2 answers:

Mars2501 [29]3 years ago

8 0

Answer:

subtraction... we need the rest of the question.

Step-by-step explanation:

Ronch [10]3 years ago

3 0

We need to see the rest of the question...

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Urgent i need it 20 points for whoever that does it

PIT_PIT [208]

Answer:

Step-by-step explanation:

Took the test

4 0

2 years ago

Which word in the sentence is the indirect object? I gave Serena some flowers.

Pepsi [2]

I gave. gave what? flowers= direct object
gave flowers to who? Serena=indirect object.
I hope this helped. :)

7 0

2 years ago

In quadratic drag problem, the deceleration is proportional to the square of velocity

Mars2501 [29]

Part A

Given that $a= \frac{dv}{dt} =-kv^2$

Then,

$\int dv= -kv^2\int dt \\ \\ \Rightarrow v(t)=-kv^2t+c$

For $v(0)=v_0$ , then

$v(0)=-kv^2(0)+c=v_0 \\ \\ \Rightarrow c=v_0$

Thus, $v(t)=-kv(t)^2t+v_0$

For $v(t)= \frac{1}{2} v_0$ , we have

$\frac{1}{2} v_0=-k\left( \frac{1}{2} v_0\right)^2t+v_0 \\ \\ \Rightarrow \frac{1}{4} kv_0^2t=v_0- \frac{1}{2} v_0= \frac{1}{2} v_0 \\ \\ \Rightarrow kv_0t=2 \\ \\ \Rightarrow t= \frac{2}{kv_0}$

Part B

Recall that from part A,

$v(t)= \frac{dx}{dt} =-kv^2t+v_0 \\ \\ \Rightarrow dx=-kv^2tdt+v_0dt \\ \\ \Rightarrow\int dx=-kv^2\int tdt+v_0\int dt+a \\ \\ \Rightarrow x=- \frac{1}{2} kv^2t^2+v_0t+a$

Now, at initial position, t = 0 and $v=v_0$ , thus we have

$x=a$

and when the velocity drops to half its value, $v= \frac{1}{2} v_0$ and $t= \frac{2}{kv_0}$

Thus,

$x=- \frac{1}{2} k\left( \frac{1}{2} v_0\right)^2\left( \frac{2}{kv_0} \right)^2+v_0\left( \frac{2}{kv_0} \right)+a \\ \\ =- \frac{1}{2k} + \frac{2}{k} +a$

Thus, the distance the particle moved from its initial position to when its velocity drops to half its initial value is given by

$- \frac{1}{2k} + \frac{2}{k} +a-a \\ \\ = \frac{2}{k} - \frac{1}{2k} = \frac{3}{2k}$

7 0

2 years ago

Alyssa is building a brick mailbox. She is going to stack bricks that are each 2/3 ftstart fraction, 2, divided by, 3, end fr

Reptile [31]

7 bricks

7 x 2/3 = 4 2/3

4 0

2 years ago

Write an equation in point-slope form of the line that passes through the given point and with the given slope m.

alexgriva [62]

Step-by-step explanation:

Given:

(-3,2)

m = 2

Computation:

x1 = -3

y1 = 2

Equation of slop

(y-y1) = m(x-x1)

So;

(y-2) = 2(x+3)

y-2 = 2x + 6

y = 2x + 8

#learnwithbrainly

3 0

2 years ago