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2 years ago

Hey I don’t understand this question either please help me out :(

Mathematics

2 answers:

Vladimir [108]2 years ago

5 0

Answer:

Step-by-step explanation:

first sub in 24 into the d (days)

then solve for L (length) from there with addition.

hope this helps!!

pickupchik [31]2 years ago

3 0

I don’t know sorrryyy

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The point P= (x,-1/7) lies on the unit circle shown below. What is the value of x in simplest form?

ipn [44]

Answer:

$x^2 + \frac{1}{49} =1$

And solving for x we got:

$x^2 = 1- \frac{1}{49}$

$x^2 = \frac{48}{49}$

And taking square root we got:

$x = \sqrt{\frac{48}{49}}= \frac{\sqrt{48}}{7} = \frac{4\sqrt{3}}{7}$

Step-by-step explanation:

For this case we have the following point given $P(x , -1/7)$

And we want to find the value of x, since P lies on the unitray circle if we find the distance from P to the center of the unitary circle (0,0) we need to get 1. Using the definition of Euclidean distance that means:

$d = \sqrt{(x -0)^2 +(-1/7 -0)^2}=1$

And if we square both sides of the last equation we got:

$x^2 + \frac{1}{49} =1$

And solving for x we got:

$x^2 = 1- \frac{1}{49}$

$x^2 = \frac{48}{49}$

And taking square root we got:

$x = \sqrt{\frac{48}{49}}= \frac{\sqrt{48}}{7} = \frac{4\sqrt{3}}{7}$

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3 years ago

Jamie has an old CD that she wants to use for an art project. The circumstance of the CD is 22 cm and she would like to cut from

nirvana33 [79]

Answer: 10 cm

Step-by-step explanation:

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We know that the formula of the circumference is:

Circumference = 2\pi r

We will substitute the value of circumference to find the radius:

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r = 11

Therefore its radius will be 22 / 2 = 11 cm

Jamie wants to cut the CD from the middle of the CD to one side but leaving one cm. To find the measurement of the cut portion, we will subtract 1 from 11 to get:

11 - 1 = 10 cm

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