There is a bag with only red marbles and blue marbles.
The probability of randomly choosing a red marble is 7/9.
There are 45 marbles in total in the bag and each is equally likely to be chosen.
Work out how many red marbles there must be.

There must be 35 red marbles.

Step-by-step explanation:

This question can be solved using a rule of three.

A probability is the number of desired outcomes divided by the number of total outcomes.

The probability of randomly choosing a red marble is 7/9.

This means that for each set of 9 marbles, 7 must be red.

There are 45 marbles in total in the bag and each is equally likely to be chosen. Work out how many red marbles there must be.

How many red marbles out of 45?

7 red - 9 marbles

x red - 45 marbles

Simplifying by 9

There must be 35 red marbles.

∠cbe and ∠deb are same-side interior angles.

i took the test

3/5

step-by-step explanation:

double number line is not a standard concept, so it must have been defined in your textbook. assume top line is numerator.