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Rus_ich [418]
3 years ago
5

Estimate 78 percent of 20 A. 14 B. 16 C. 19 D. 2

Mathematics
1 answer:
MrRa [10]3 years ago
4 0
B is the answer............
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Drupady [299]

180-124=56

56/2=28

Ans 28

6 0
3 years ago
Please find question in photo below. I’m revising for a test I have in a few days, and I can’t figure this out. Please help!
Temka [501]

\large{\rm{\underline{\underline{Answer:}}}}

a) <u>n² + 6 </u>

~Here n is the number of term. So, put n = 1,2,3,4.... to get the term.

  • If n = 1, first term = 1² + 6 = 7
  • n = 2, second term = 10
  • n = 3, third temm = 15
  • n = 4, fourth term = 22
  • n = 10, tenth term = 106

b) <u>3n²</u>

  • If n = 1, first term = 3
  • n = 2, second term = 12
  • n = 3, third term = 27
  • n = 4, fourth term = 48
  • n = 10, tenth term = 300
3 0
3 years ago
A fair coin is flipped four times . use a tree diagram to find the probability of observing. exactly two heads . enter youe answ
Leni [432]

Answer:

50%

Step-by-step explanation:

So, we divide by another 2! to cancel out double counting of two T's. Finally, if we divide all 6 different ways of getting exactly 2 heads (and 2 tails) in 4 flips by all possible outcomes 2 * 2 * 2 * 2 = 16 we would get the probability of exactly 2 heads in 4 flips.

5 0
3 years ago
What is the difference between infinity and forever?
VikaD [51]
When you say something goes on forever, it means that it is going on to infinity.  Infinity is something that can be used as a mathematical concept, but forever is not.  Forever is something people say if they don't know how infinity is used.
8 0
3 years ago
Read 2 more answers
In 1989 the population of Arizona was 3,622,184. In 1999 the population was 4,778,332. What is the percent of change from 1989 t
kodGreya [7K]
Answer- 31.9%

3,622,184 =100%
4,778,332= x
Criss cross
477,833,200= 3,622,184x
Divide to get x alone
X= 131.9
131.9 - 100= 31.9%
Because it asks for the change
6 0
3 years ago
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