There is a bag with only red marbles and blue marbles. The probability of randomly choosing a red marble is
7/10

There are 42 red marbles in the bag and each is equally likely to be chosen.
How many marbles in total must there be?

There are 60 marbles in the bag

Step-by-step explanation:

The total number of marbles  times the probability of red marbles = number of red marbles

total * 7/10 = 42

Multiply each side by 10/7

total * 7/10 * 10/7 = 42*10/7

total

60

There are 60 marbles in the bag

hi there!

the answer to this question is d: 35

step-by-step explanation:

5 to the power of 2 is 25

2 multiplied by 5 is 10

then you add the 2 numbers and you get 35

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1