3 years ago

Find the circumference of the circle to the nearest tenth. Use 3.14 for pi.

Mathematics

1 answer:

katrin2010 [14]3 years ago

3 0

Answer:157 m

Step-by-step explanation:you need to multiply 3.14*25*2

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Laura decides to walk to her job. She walks 1 1/2 miles in 3/5 hour. What is Laura’s walking rate? Laura Job is 4 1/2 Miles away

Harrizon [31]

1.5 miles/ .6 hours = 2.5 miles per hour

her walking rate is 2.5 miles per hour

d= r * t

4.5 miles = 2.5 * t

divide each side by 3.5

4.5 /2.5 = t

1.8 = t

t = 1.8 hours

11 am - 9 am = 2 hours

She will make it to work on time because 1.8 hours < 2 hours

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2 years ago

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kotegsom [21]

Mean is 444.6
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2 years ago

Find the unit vector in the direction of (4,-4). Write your answer in component form. Do not approximate any numbers in your ans

aniked [119]

Answer:

$(\frac{1}{\sqrt{2} }, \frac{-1}{\sqrt{2} } )$

Step-by-step explanation:

The unit vector for a nonzero vector, say u, in the direction of u is given by:

û = $\frac{u}{|u|}$ ---------------(i)

Where;

|u| = magnitude of vector u

From the question;

u = (4, -4)

First let's calculate the magnitude of u as follows;

|u| = $\sqrt{(4)^2 + (-4)^2}$

|u| = $\sqrt{16 + 16}$

|u| = $\sqrt{32}$ = $4\sqrt{2}$

Now, substitute u and |u| into equation (i) as follows;

û = $\frac{(4, -4)}{4\sqrt{2} }$

û = $(\frac{4}{4\sqrt{2} }, \frac{-4}{4\sqrt{2} } )$

û = $(\frac{1}{\sqrt{2} }, \frac{-1}{\sqrt{2} } )$

Therefore, the unit vector is $(\frac{1}{\sqrt{2} }, \frac{-1}{\sqrt{2} } )$

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3 years ago

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Harrizon [31]

Answer:

Step-by-step explanation:

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2 years ago

Which choice is equivalent to √10*√5? A. 5√2 B. 25√2 C. 5√10 D. 2√5

DanielleElmas [232]

Answer: $5\sqrt{2}$

Step-by-step explanation:

$\sqrt{10} *\sqrt{5} =\sqrt{50} =\sqrt{2*5*5} =5\sqrt{2}$

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2 years ago