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Free_Kalibri [48]
3 years ago
13

Choosing a 6 one though six then a prime number

Mathematics
1 answer:
oksano4ka [1.4K]3 years ago
7 0
First off, there are 6 choices: 1, 2, 3, 4, 5, and 6


The probability of getting a 6 is 1/6
The probability of getting a prime number is 1/2

Multiply them and you get 1/12

The probability is 1/12.

Hope this helped!
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a line whose perpendicular distance from the origin is 4 units and the slope of perpendicular is 2÷3. Find the equation of the l
GrogVix [38]

Answer:

\huge\boxed{y=\dfrac{2}{3}x-\dfrac{4\sqrt{13}}{3}\ \vee\ y=\dfrac{2}{3}x+\dfrac{4\sqrt{13}}{3}}

Step-by-step explanation:

The equation of a line:

y=mx+b

We have

m=\dfrac{2}{3}

substitute:

y=\dfrac{2}{3}x+b

The formula of a distance between a point and a line:

General form of a line:

Ax+By+C=0

Point:

(x_0,\ y_0)

Distance:

d=\dfrac{|Ax_0+By_0+C|}{\sqrt{A^2+b^2}}

Convert the equation:

y=\dfrac{2}{3}x+b     |<em>subtract y from both sides</em>

\dfrac{2}{3}x-y+b=0    |<em>multiply both sides by 3</em>

2x-3y+3b=0\to A=2,\ B=-3,\ C=3b

Coordinates of the point:

(0,\ 0)\to x_0=0,\ y_0=0

substitute:

d=4

4=\dfrac{|2\cdot0+(-3)\cdot0+3b|}{\sqrt{2^2+(-3)^2}}\\\\4=\dfrac{|3b|}{\sqrt{4+9}}

4=\dfrac{|3b|}{\sqrt{13}}\qquad|    |<em>multiply both sides by \sqrt{13}</em>

4\sqrt{13}=|3b|\iff3b=-4\sqrt{13}\ \vee\ 3b=4\sqrt{13}   |<em>divide both  sides by 3</em>

b=-\dfrac{4\sqrt{13}}{3}\ \vee\ b=\dfrac{4\sqrt{13}}{3}

Finally:

y=\dfrac{2}{3}x-\dfrac{4\sqrt{13}}{3}\ \vee\ y=\dfrac{4\sqrt{13}}{3}

4 0
2 years ago
Write (-5+8i)+(-5-8i) as a complex number in standard form
gizmo_the_mogwai [7]
(-5+8i)+(-5-8i) =&#10;-5+8i-5-8i=-10
5 0
3 years ago
1.) x 5 y 3• x 3 y 4<br> 2.) 3x 2 y • 6xy 4
aksik [14]

Answer:

( 5x+3y=7. < 3x - 5y = -23 you can use many ..

Step-by-step explanation:

hopefully its right

5 0
2 years ago
A bottle and its cork cost $1.20 of the bottle costs $1.10 more than the cork. What is the cost of bottle and of the cost of cor
777dan777 [17]
The cost of the bottle alone costs $1.15, and the cork costs $0.05, you add them together and you get  $1.20. That is how the bottle costs $1.20.
8 0
2 years ago
Light travels about 3 x 10^5 metres per second. Find the time it takes to travel 1 metre. Give your answer in standard form.
Anna71 [15]

Answer:

t=3.3*10^{-6}

Step-by-step explanation:

t=\frac{S}{v}

As

S=1m

v=3*10^{5}ms^-1

t=\frac{1}{3*10^{5} }

t=3.3*10^{-6}

3 0
2 years ago
Read 2 more answers
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