I'm attaching the solutions.. please let me know if you have any questions.
Hope it helps.
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
9514 1404 393
Answer:
x² +y² = 16
Step-by-step explanation:
The diagonal of a square is √2 times the side length, so the diameter of a circumscribed circle is √2 times the diameter of an inscribed circle. Each of the two outer circles is √2 times the diameter of the one just inside it, so the outer circle is (√2)(√2) = 2 times the diameter of the inner circle.
The equation of the largest circle with radius 2·2=4 is ...
x² +y² = 16
Answer:
59.4053869611
Step-by-step explanation:
...................
Answer:
Ned lost 16 points total.
Step-by-step explanation:
If Ned got 6 questions wrong, and each one cost him four points, that would be 24 points total. 6x4=24. But since Ned got 8 additional points on a bonus question. It equals out to a total los of 18 points.
-24 + 8= -16
