3 years ago

A clock face has a circumference of 39.88 cm. Find the diameter of the clock. Use 3.14 as an approximation of pie

Mathematics

1 answer:

fomenos3 years ago

7 0

Answer:

69.08 is the answer

Step-by-step explanation:

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Solve three and two fifths plus three and four sixths

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Answer:

7 1/15

Step-by-step explanation:

3 2/5 + 3 4/6 = 7 1/15

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The price of an item yesterday was $85. Today, the price rose to $119. Find the percentage increase.

skelet666 [1.2K]

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40% increase

Step-by-step explanation:

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Write down in terms of n, an expression for the nth term of the following sequences: 1,8,15,22,29

Crank

Step-by-step explanation:

t1 = 1 = 7*1 - 6

t2 = 8 = 7* 2 - 6

t3 = 15 = 7 * 3 - 6

t4 = 22 = 7 *4 - 6

t5 = 29 = 7 * 5 - 6

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3 years ago

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Suppose r(t)=costi+sintj+3tk represents the position of a particle on a helix, where z is the height of the particle above the g

Ilia_Sergeevich [38]

a. The $\vec k$ component tells you the particle's height:

$3t=16\implies t=\dfrac{16}3$

b. The particle's velocity is obtained by differentiating its position function:

$\vec v(t)=\dfrac{\mathrm d\vec r(t)}{\mathrm dt}=-\sin t\,\vec\imath+\cos t\,\vec\jmath+3\,\vec k$

so that its velocity at time $t=\frac{16}3$ is

$\vec v\left(\dfrac{16}3\right)=-\sin\dfrac{16}3\,\vec\imath+\cos\dfrac{16}3\,\vec\jmath+3\,\vec k$

c. The tangent to $\vec r(t)$ at $t=\frac{16}3$ is

$\vec T(t)=\vec r\left(\dfrac{16}3\right)+\vec v\left(\dfrac{16}3\right)t$

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3 years ago

Select the equivalent expression

slava [35]

Answer: c
hope this helps!

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3 years ago