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3 years ago

Need help ASAP!!!!!!!

Mathematics

2 answers:

lutik1710 [3]3 years ago

6 0

I’m pretty sure it’s C I think

natima [27]3 years ago

4 0

Answer:

Step-by-step explanation:

You can subtract normally when the square roots are the same( like in your problem) but the squares stay they same and the numbers on the outside change.

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Find the length of the arc of the circular helix with vector equation r(t) = 2 cos t i + 2 sin t j + tk from the point (2, 0, 0)

USPshnik [31]

$\vec r(t)=2\cos t\,\vec\imath+2\sin t\,\vec\jmath+t\,\vec k$

$\implies\vec r'(t)=-2\sin t\,\vec\imath+2\cos t\,\vec\jmath+\vec k$

$\implies\|\vec r'(t)\|=\sqrt{(-2\sin t)^2+(2\cos t)^2+1^2}=\sqrt5$

Then the length of the arc is

$\displaystyle\int_0^{2\pi}\|\vec r'(t)\|\,\mathrm dt=\sqrt5\int_0^{2\pi}\mathrm dt=2\sqrt5\,\pi$

4 0

3 years ago

Question

meriva

Question:

In a neighbourhood pet show, each of the animals entered is equally likely to win. if there are 7 dogs, 6 cats, 3 birds, and 2 gerbils entered, what is the probability that a bird will win the top prize?

Answer:

Probability that a bird will win the top prize is 0.167

Step-by-step explanation:

Given:

The number of dogs = 7

The number of cats = 6

The number of birds = 3

The number of gerbils = 2

To Find:

Probability that a bird will win the top prize = ?

Solution:

Let us first find the total number of pets .

The Total number of pets = 7 + 6 + 3 + 2 = 18

Now the probability of a bird will win the top prize is

=> $\frac{\text {Number of birds}}{\text{ Total number of pets}}$

=> $\frac{3}{18}$

=> $\frac{1}{6}$

=>0.167

4 0

3 years ago

Am I correct? If so why?

babunello [35]

Answer: its correct

Step-by-step explanation: and its correct cuase its the answer you choose

7 0

2 years ago

For a random sample of 20 professional athletes, there is a strong, linear relationship between the number of hours they exercis

QveST [7]

Answer:

D) -0.87

Step-by-step explanation:

I took this test don't quote me on the answer but this is what my peers put.

6 0

3 years ago

2/10times6/10. Please help

babunello [35]

Answer:

I believe the answer is 1 2/10

Hope this helps!

8 0

3 years ago

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