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cestrela7 [59]
3 years ago
8

A bag has five red marbles, six blue marbles, and four black marbles. What is the probability of picking a blue marble, replacin

g it, and then picking a black marble?
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
8 0
5+6+4=15
blue marble = 6 out of 15
replacing blue marble for black = 4 out of 14
Nezavi [6.7K]3 years ago
6 0
P(blue) = 6/15
P(black) = 4/15
P(blue\ then\ black)=\frac{6}{15}\times\frac{4}{15}=\frac{8}{75}
The required value of probability is 8/75.
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2 years ago
Find the equation of the tangent line to the curve y = 2sinx at the point (pi/6,1). The equation of this tangent line can be wri
mixas84 [53]
Y = mx + b

1) m = slope of the tangent line = derivative at the point (pi/6, 1)

Function: y = 2sinx

Derivative: y ' = 2cosx

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2) equation using the slope and the point (pi/6, 1)

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8 0
3 years ago
I NEED HELP WITH A MATH QUESTION PLEASE???!
taurus [48]
Part A
Chorus:
Expontential growth = b*a^x 
b = 15
a = 1.12              (a= r+1), r = 12%

Which gives a function of f(x) = 15*1.12^x 


Band
Linear growth = ax+b
a = 2
b = 30

Which gives a function of g(x)=2x+30

Part B:
f(9) = 15*1.12^9 = 41.59
g(9) = 2*9+30 = 48

Part C:
This is probably problem solving, where you're allowed to use calculators and other softwares.

Therefore you can use different softwares, and make f(x) = g(x).
I did this, and got it to 10.95427141



8 0
2 years ago
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