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

factorise the following

Connor had 1 quart of ice cream. He ate 1/6 of quart of ice cream on Friday night and 3/6 of a quart of ice cream on Saturday night. How much of ice cream does

A school trip to a museum cost $2,056. A total of 125 chaperones and students went on the trip. Adult admission to the museum costs $23, and student admission c

how could scientitsts use data from tree rings to learn more about ecosystems in the past? use evidence from the tree ring illustration to support your answeer

How would you describe how the speaker feels about her mother?

PLEASE HURRY, I'M TIMED!!!!!!!!!!!!!!!!!!!!!!!! What is the first part of the screening process that organizations use when candidates have applied for their jo

Based on the Article, which best replaces the question mark in the diagram above? There is a box on the left that is labeled "Cause". The box says "Shoichi Yoko

Blue tonality uses the natural minor scale to build harmonies. O A. True O B. False

Sarah ran 7.460 miles on Monday and Mya ran 5.320 miles on Tuesday. How many more miles did Sarah run than Mya?

1 third equals blank sixth