SweetandSour34 SweetandSour34

02-05-2018
Mathematics

contestada

21 marbles out of N are blue; probability of getting a blue one = 30%

Respuesta :

twvogels twvogels

02-05-2018

[tex]Probability=\frac{desired}{total}[/tex]
[tex]0.3=\frac{21}{N}[/tex]
[tex]0.3N=21[/tex]
[tex]N=\frac{21}{0.3}[/tex]
[tex]N=70[/tex]

There are 70 total marbles.

Answer Link

Otras preguntas

1/2x+1/2x=x+1 Can someone show me how to do this???

solve for x 6(x+5)-3(x-2)=12x+18

What is the name of the biome in which you can encounter an elephant (in natural environment of course)

the formula for the surface area of a pyramid is: SA=1/2LP+B . which equation solves formula for p

A resistance of 10ohm is bent in the form of a closed cirle. What is the effective resistance between the two pints of any diameter of this circle?

Identify 1 similarity and 1 difference between folding and warping.

How much is this shaded Please help

The position of a place north or south of the equator is measured in ?

WHAT IS THE FULL FORM OF MILLION

How would I write 21/8 as a mixed number?