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2 years ago

Where is Earth's prime meridian?

Mathematics

2 answers:

Oduvanchick [21]2 years ago

6 0

Answer:

Step-by-step explanation:

The line runs through Greenwich

shtirl [24]2 years ago

6 0

The starting point for measuring east and west around the earth. Also, the prime meridian is arbitrary so meaning it could be chosen to be anywhere.

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Please help please need answer

RoseWind [281]

a)12cm by 3cm

b) it's an enlargement

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3 years ago

When the area in square units of an expanding circle is increasing twice as fast as its radius in linear units, the radius is...

enot [183]

Answer:

c. $\frac{1}{\pi}$

Step-by-step explanation:

We have been given that the area in square units of an expanding circle is increasing twice as fast as its radius in linear units

We will use derivatives to solve our given problem.

We know that area (A) of a circle is equal to $A=\pi r^2$ .

Let us find derivative of area function with respect to time.

$\frac{dA}{dt}=\frac{d}{dt}(\pi r^2)$

Bring out constant:

$\frac{dA}{dt}=\pi \frac{d}{dt}(r^2)$

Using power rule and chain rule, we will get:

$\frac{dA}{dt}=\pi(2r)* \frac{dr}{dt}$

$\frac{dA}{dt}=2\pi r*\frac{dr}{dt}$ Here $\frac{dr}{dt}$ represents change is radius with respect to time.

We have been given that area of an expanding circle is increasing twice as fast as its radius in linear units. We can represent this information in an equation as:

$\frac{dA}{dt}=2\frac{dr}{dt}$

$2\pi r* \frac{dr}{dt}=2\frac{dr}{dt}$

$2\pi r=2$

$\frac{2\pi r}{2\pi}=\frac{2}{2\pi}$

$r=\frac{1}{\pi}$

Therefore, the radius is $\frac{1}{\pi}$ and option 'c' is the correct choice.

6 0

3 years ago

Solve equation -7+2q=4

Dimas [21]

answer: 11 over 2) step by step explaination add 7 to both sides with 4 cancel out positive seven and negative seven bring down 2q and 4+7 is 11 so the answer is 11 over 2

7 0

4 years ago

Read 2 more answers

Help please...........

Marina86 [1]

GRAPH C HOPE THIS HELPS SORRY CAPS

3 0

4 years ago

X and y-intercept of y=X-5

aksik [14]

The x-intercept is when y = 0
y = x - 5 → 0 = x - 5 → x = 5

The y-intercept is when x = 0
y = x - 5 → y = 0 - 5 → y = - 5

Answer: x-intercept is (5, 0), y-intercept is (0, -5)

4 0

3 years ago