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evablogger [386]
3 years ago
14

A box contains 4 red and 5 green marbles. if 6 marbles are drawn without replacement, what is the expected number of red marbles

?
Mathematics
2 answers:
qaws [65]3 years ago
6 0
The expected number is 2 marbles
cricket20 [7]3 years ago
6 0
I hope this helps i believe it is 1/3<span />
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For a Saturday matinee, adult tickets cost $7.50 and kids under 12 pay
ella [17]
<span>               let x = # of adult tickets sold,  thus the # of children tickets =    70-x</span> <span>                     7.5x + 5(70-x) =   450</span> <span>     ^     7.5x + 350 -5x =   450</span> <span>       ^      2.5x =  450-350= 100</span> <span>                           x = 40 adults tickets        thus 70—40 = 30 children tickets</span>                       



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3 years ago
Area of the Shaded Region rectangle within reactanlge
Alik [6]

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132

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First you need to find the area of both regions (shaded and not shaded)

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Step-by-step explanation:

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Shalnov [3]

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Step-by-step explanation:

3 0
2 years ago
find the equation of a straight line passing through the point(4,5) and equally inclined to the lines 3x = 4y +7 and 5y= 12x +6
galina1969 [7]
<span>First we have to determine the slope of each lines by transforming to the slope-intercept form:

y=(3x-7/)4; m2= ¾y=(12x+6)/5, m3 = 12/5

The formula to be used in the proceeding steps is    a=tan^-1(m1-m2)/1+m1m2=tan^-1(m1-m2)/1+m1m2
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y -y1 = m(x-x1)
when y1 = 5 and x1 = 4 then,
y - 5 = -1(x-4)
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3 0
3 years ago
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