Answer:
C. 5 Red marbles
Step-by-step explanation:
If she started with 5 red marbles and had a probability of 1/5 of drawing a red marble, then there were 20 blue marbles, and 25 total marbles.
5/25 = 1/5
If she added 5 red marbles, she now would have 10 red marbles and still 20 blue marbles, giving her 30 total marbles in the bag.
10/30 = 1/3, so C is the right answer.
You can rule out other choices by repeating the above steps and substituting appropriate values
Divide 60 by 2/3 to find the class total.
= 60 ÷ 2/3
to divide fractions, multiply by reciprocal of 2/3
= 60 * 3/2
multiply numerators
= (60 * 3)/2
= 180/2
= 90 total students
CHECK
= 90 total * 2/3
= (90*2)/3
= 180/3
= 60 which is 2/3 of class
ANSWER: There are 90 total students
Hope this helps! :)
Answer:
110 squares
Step-by-step explanation:
= 10 x 11
= 110 small squares.
From the question,
Step one : • • = 1(2) small squares
Step two : • • • = 3 squares in two layers = 2(3) = 6 small squares
• • •
Step three : • • • • = 4 squares in 3 layers = 3(4) = 12 small squares
• • • •
• • • •
If you translate it I can help u
140 you divide 490 by 3.5.
