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

HELP ME PLEASE ASAP!!!!!!!!!!!!!!!!!!!

If ΔMTV is reflected across the y-axis, what are the resulting coordinates of point M? A) (-2, 5) B) (-5, 2) C) (5, -2) D) (-2, -5)

Texas is the largest state in the union. T F

help me please! write an equation for the interior angles of this triangle that uses the triangle sum theorem

PLEASE HELP ASAP!!!!! WILL BE MARKED AS BRAINLEST!!!!!!Describe the significance of these words: "that we here highly resolve that these dead shall not have die

What percent of the circle below is shaded?

What year was Nobleza gauche made? A. 1885 B. 1915 C. 1955 D. 2009

10. According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

which two objects have the greatest gravitational force acting between them

_ _ _ _ _ _ is the process of removing earth materials from their original sites through weathering and transport and depositing the in another location. A. Ero