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3 years ago

11

There are 8 students in the classroom, including the triples molly, polly and dolly. if 3 of the 8 are randomly selected to give

speeches, what is the probability that molly will be first, polly will be second and dolly will be third

1 answer:

Scilla [17]3 years ago

4 0

If you mean like out of 8 it's 12 1/2 and if it's out of 3 it's 33 1/3

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A car depreciates in value by 17% per year.

otez555 [7]

Answer:

17%of 23000

17/100×23000

1 yrs depreciation is 3910

then

after 4 years depreciation is 4×3910

=15640

the worth of after 4 yrs is 23000-15640

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3 years ago

Recall the equation for a circle with center (h,k) and radius r. At what point in the first quadrant does the line with equation

IgorC [24]

Answer:

At intersection

x=2.68

y=5.34

Step-by-step explanation:

Equation of circle with center (h,k) and radius r is

$(x-h)^{2}+(y-k)^{2}=r^2\\\\With\,\, center\,\,(0,4)\,\, and\,\, r=3\\\\(x-0)^{2}+(y-4)^{2}=3^2\\\\x^2+(y-4)^{2}=9---(1)\\\\Equation\,\,of intersecting\,\,line\\y=0.5x+4---(2)$

To find point of intersection:

From (2)

$x=\frac{y-4}{0.5}=2(y-4)\\\\x^2=4(y-4)^{2}\\\\Put\,\,in\,\,(1)\\\\4(y-4)^{2}+(y-4)^{2}=9\\\\5(y-4)^{2}=9\\\\y-4=\frac{3}{\sqrt{5}}\\\\y=1.34+4\\\\y=5.34\\\\x=2(5.34-4)\\\\x=2(0.34)\\\\x=2.68$

At intersection

x=2.68

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This point of intersection can be checked in graph attached below

3 0

3 years ago

6(x^2-1).6x-1/6(x+1)

Andrej [43]

The answer is (<span><span>3.6<span>x^3 </span></span>− <span>3.766667x</span></span>+<span><span>−1/</span><span>6)

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3 years ago

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Ket [755]

Answer:

Manuel received 28 purple pins.

Step-by-step explanation:

This is a simple equation. If he received 40 pounds and 70% of them are purple then the number of purple pins is 40 * 70% = 28.

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3 years ago

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Rzqust [24]

Answer:

6/21

Step-by-step explanation:

Brainliest?

4 0

3 years ago

Read 2 more answers