Answer:
Step-by-step explanation:
Simplify like terms.
10a-2a+3b+b = 8a+4b
2.6*10 4
two. six times ten to the fourth
Answer:
B. sin 63°
Step-by-step explanation:
cos 27°
cos (90° − 63°)
sin 63°
Answer:
Probability = 0.0288
Step-by-step explanation:
For the first draw.
There are total of 52 cards in a deck of cards and a total of 26 red cards in a deck of cards.
Probability of drawing a red= 26/52
Probability = 0.5
For the second draw. Actually the initial card drawn was replaced. Total number of face cards are 12.
Probability of drawing a face card = 12/52= 0.23076923
For the third draw .
There are 13 diamond cards in total.
Probability of a diamond = 13/52
Probability = 0.25
Probability of red,face, diamond= 0.5*0.23076923*0.25=0.028846
To four decimal place = 0.0288
Answer: 22.5 inches
Step-by-step explanation:
- the general formula for finding perimeter is
- a pentagon contains 5 sides
- note that this is a regular pentagon so it must contain 5 congruent sides
- each side will be 4.5 inches
- the formula can be changed to
and solved:
∴ 22.5 inches = perimeter of the pentagon
