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3 years ago

True or False: In scientific notation a number is written m X 10^w where m is between 1.000 and 9.999...

Mathematics

1 answer:

Bogdan [553]3 years ago

8 0

Answer: True

Step-by-step explanation:

We try to keep the number greater than 1 and lower than 10, so between 1, and 9.

For example: 3545346 would be 3.5x10^6

you can see 3.5 is between 1 and 9

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Who can help me on edge 24/7?? ill give user and pass. must be reliable

Jet001 [13]

Answer:

not me srry

Step-by-step explanation:

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3 years ago

For the given position vectors r(t) compute the unit tangent vector T(t) for the given value of t .

algol13

Answer:

a) $T(t) = \frac{}{5}=$

$T(4) =$

b) $T(t) = \frac{}{8\sqrt{37}}$

$T(4) =$

c) $T(t) = \frac{}{2425825977}$

$T(4) = \frac{1}{2425825977}$

Step-by-step explanation:

The tangent vector is defined as:

$T(t) = \frac{r'(t)}{|r'(t)|}$

Part a

For this case we have the following function given:

$r(t) =$

The derivate is given by:

$r'(t) =$

The magnitude for the derivate is given by:

$|r'(t)| = \sqrt{25 sin^2(5t) +25 cos^2 (5t)}= 5\sqrt{cos^2 (5t) + sin^2 (5t)} =5$

And then the tangent vector for this case would be:

$T(t) = \frac{}{5}=$

And for the case when t=4 we got:

$T(4) =$

Part b

For this case we have the following function given:

$r(t) =$

The derivate is given by:

$r'(t) =$

The magnitude for the derivate is given by:

$|r'(t)| = \sqrt{4t^2 +9t^4}= t\sqrt{4 + 9t^2}$

$|r'(4)| = \sqrt{4(4)^2 +9(4)^4}= 4\sqrt{4 + 9(4)^2} = 4\sqrt{148}= 8\sqrt{37}$

And then the tangent vector for this case would be:

$T(t) = \frac{}{8\sqrt{37}}$

And for the case when t=4 we got:

$T(4) =$

Part c

For this case we have the following function given:

$r(t) =$

The derivate is given by:

$r'(t) =$

The magnitude for the derivate is given by:

$|r'(t)| = \sqrt{25e^{10t} +16e^{-8t} +1}$

$|r'(t)| = \sqrt{25e^{10*4} +16e^{-8*4} +1} =2425825977$

And then the tangent vector for this case would be:

$T(t) = \frac{}{2425825977}$

And for the case when t=4 we got:

$T(4) = \frac{1}{2425825977}$

5 0

3 years ago

You have 50 blueberry scones and 75 cranberry scones. You want to make as many identical bags as possible. Each bag should have

LekaFEV [45]

There could be 25 bags with 2 blueberry scones in each and 3 cranberry scones in each. This is because 25 is a factor of both amounts so you would divide each by 25. That leaves it with 2 blueberry scones and 3 cranberry scones.

7 0

3 years ago

Read 2 more answers

Mallory has $9 to buy lollipops that cost $0.35 each. What is the greatest number of lollipops she can buy?

inn [45]

She can buy 25 lollipops

5 0

3 years ago

What is the surface area of the net below?<br> 4 cm<br> 7.2 cm<br> 12 cm

Ulleksa [173]

Answer: 163.2 cm^2

(4*7.2) + (7.2*12) + (12*4)

28.8 + 86.4 + 48

163.2

If that is the answer your looking for then brainliest pwease! <3

7 0

2 years ago