Answer: I think it's b.
Step-by-step explanation:
Answer:
t² + t - 3 = 0
Step-by-step explanation:
C = t - 5
B = t² - 2
2C + 2B
= 2(t - 5) + 2(t² + 2)
= 2t - 10 + 2t² + 4
= 2t² + 2t - 6
=> t² + t - 3 = 0
Area formula:
3.14*radius*radius
Substitute in numbers you already know (radius is half the diameter):
3.14*(6/2)*(6/2)
=3.14*9
=28.26
The area is 28.26 square meters.
Circumference formula:
3.14*diameter
Substitute in numbers you know:
3.14*6
=18.84
The circumference is 18.84 meters.
Hope this helped!
Answer:
The probability of select randomly a red or a blue marble is
Step-by-step explanation:
The probability of an event is the ratio of the number of ways it can happen, to the total number of possible cases.
Select randomly a red or a blue marble are mutually exclusive events because they cannot occur at the same time. When two events, A and B, are mutually exclusive, the probability that A or B will occur is the sum of the probability of each event.
We know from the information given that
- There are 46 red marbles, 59 white marbles and 49 blue marbles
We can use this information to calculate the probability of select randomly a red marble and also the probability to select randomly a blue marble
Now we can calculate the probability that we select a red or a blue marble
6y = 24 -3x
divide both sides by 6.
y = (x)/2 +4