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3 years ago

6

Solve for the probability that a student is selected at random from a group of 20 students will draw a 6 from a bag with the num

bers 1 though 15 in it. Show and explain all of your work.

1 answer:

Alika [10]3 years ago

8 0

A 1/15 chance they will draw a 6. Because 6 is only 1/15 of the total numbers.

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Draw the unit circle with center (0,0)and plot the point P=(6,2). Observe there are TWO lines tangent to the circle passing thro

scZoUnD [109]

Answer:

Step-by-step explanation:

Given that a tangent is drawn from P (6,2) to unit circle with center at the origin.

The tangent passing through (6,2) would have equaiton of the form

$y-6 = m(x-2)\\y =mx-2m+6$ for suitable m.

Because this line is tangent, distance of centre of circle namely origin is the radius 1.

i.e. $|\frac{-2m+6}{\sqrt{1+m^2} } |=1\\(-2m+6 )^2 = 1+m^2\\3m^2-24m+35=0\\\\m=1.918, 6.082$

the coordinates are the intersection of the tangent with the circle

They are (-0.162, 0.987) and (0.462,-0.887)

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4 years ago

Solve for n: 7(n - 6) = a(n + 5)

Morgarella [4.7K]

Answer:

n = $\frac{(5a + 42)}{( 7 - a ) }$

Step-by-step explanation:

7(n - 6) = a(n + 5)

7n - 42 = an + 5a

7n - an = 5a + 42

n( 7 - a ) = 5a + 42

n = $\frac{(5a + 42)}{( 7 - a ) }$

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3 years ago

A shirts costs $20, the cost of the shirt increases 30%, what is the price of the shirt now?

ki77a [65]

Answer: 10

Step-by-step explanation:

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3 years ago

ABCD is a square, what is the measure angle of BAC

Furkat [3]

45 degrees, you are cutting the right angle in half

8 0

4 years ago

Read 2 more answers

What is the coefficient in the expression x/3+7

Ber [7]

X/3+7
co-efficient=1/3
how?
x/3 is also the same as x(1/3).

4 0

3 years ago