i need hellp with 4, 5 and6 and can you tell me ifthese answers are right for 1,
ID: 3090371 • Letter: I
Question
i need hellp with 4, 5 and6 and can you tell me ifthese answers are right for 1, 2 and 3 answer1. a) 2pi = 2 * 3 = 6b) pi / 2 = 3 / 2 = 1.5
c) 1/1.4 = 0.71
d) 1/1.7 = 0.58
e) 2 * 1.4 = 2.8 ANSWER 2.C ANSWER3. root (8) + root (15)
the root of (9) = 3 , so the root of (8) must be a number less than3, but very close to 3 such as 2.9 root of (16) = 4, so the root of (15)must be a number less than 4, but very close to 4 such as 3.9
so if you add the estimates such as 2.9 + 3.9 = 6.8
so the answer is actually very close to 6.8
Explanation / Answer
1. a) 2*3 = 6, b) 3/2 or 1.5, c) 1/1.4 (plug into calculator),d) 1/1.7 (plug into calculator), e) sqr(4*2) = 2 sqr(2) = 2*1.4 =2.8
2. A=3, B=2*1.7 = 3.4, C=3*1.7=5.1, D=1.4+1.7=3.1, so C islargest
3. sqr(8) is sqr(4*2) = 2*sqr(2) = 2*1.4 = 2.8. sqr(15) isroughly the same as sqr(16) = 4. 2.8+4 = 6.8 which is much largerthan 4.796. That student has a broken calculator.
4. sin is opposite over hypoteneuse = 1/3 = .3333, so A is thebest estimate
5. tan is opposite over adjacent. Adjacent is not given but itis slightly less than hypoteneuse. hyp is pi, and 3 is slightlyless, to adjacent is 3. So tan A = 1/3 = .333, so C is the bestchoice.
6. x = inverse sin (opp/hyp) = sin-1(33/67) plug intoyour calculator
y=inverse cos(adj/hyp) = cos-1(33/67) plug into yourcalculator
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.