2 years ago

Can someone please help me with this question

Mathematics

1 answer:

Angelina_Jolie [31]2 years ago

3 0

1065 ft^2
Hope this helps

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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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2 years ago

A scientist wants to study the average lifespan of a population of 1000 glow worms. He records the lifespan of a random selectio

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2 years ago

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PLEASE HELP I ADDED A PIC TOO!

Klio2033 [76]

Answer:

C. $| v -21 | \leq 0.15$

Step-by-step explanation:

Because the volume is either 0.15 more or 0.15 less than 21 ounces. $| v - 21 |$ indicate the difference between the volume and 21 and it has to be less than 0.15. Therefore answer C.