All categories

4 years ago

Laws of sines: the ambiguous case. I need help solving 3,6&9. Not sure what to do. Someone please help me

Mathematics

1 answer:

7nadin3 [17]4 years ago

7 0

3) Whenever you have in a triangle 2 known sides and the angle comprise between those side, then you apply the law of cosine to calculate the 3rd side:

BC² = AB² + AC² - 2AB.BC.cos(25.6)

BC² = 306² + 275² - 2(306).(275).cos(25.6)

BC² = 93,636 + 75,625 - 168,300.(0.901833), note that cos(25.6) = 0.901...]

BC² = 17,482.6 and BC = √17,482.6 → BC = 132.22 m or 132 (rounded)

Number 6 and 9 follow the same methodology.
Hope it helped you

You might be interested in

The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained

poizon [28]

Answer:

a. $H_{0}:$ u1≤u2

$H_{a} :u1>u2$

b P<0.05 rejected H

Step-by-step explanation:

College High School

485 442

534 580

650 479

554 486

550 528

572 524

497 492

592 478

487 425

533 485

526 390

410 535

515

578

448

469

The mean is the average . the sum of number over the number of observation

x1=525

x2=487

s.d1=59.42

s.d2=51.74

n1=16

n2=12 $\alpha =0.05$

Determine the hypothesis

$H_{0}:$ u1≤u2

$H_{a} :u1>u2$

find the degree of freedom $(\frac{s1^2}{n1} +\frac{s2^2}{n2} )^2/(\frac{s1^2}{n1} )^2/n1-1+(s2^2/n2)^2/n2-1\\\\(\frac{59.42^2}{16} +\frac{51.7476^2}{12} )^2/(\frac{59.42^2}{16} )^2/16-1+(51.74^2/12)^2/12-1$

p-value is the probability of obtaining the value of the test statistics. In the column of t-value in the row df=25

0.025<P<0.05

if the P value is actually less than or the same as the significant level, then the null hypothesis is rejected

P<0.05 rejected H

8 0

3 years ago

Mr. Smith is planting a class garden for his third grade class. He surveys the class and determines that 65% prefer planting cor

Lubov Fominskaja [6]

No, because he only surveyed his class which 65% of them prefer planting corn over tomatoes. In which it does not mean that the school's third grade population that prefers planting corn over tomatoes is 65%

4 0

3 years ago

Read 2 more answers

During a physics experiment, a class drops a golf

Anit [1.1K]

Answer:

2.17 seconds

brainliest pls

3 0

2 years ago

Read 2 more answers

Find the sum of the arithmetic sequence.<br><br> -10, -7, -4, -1, 2, 5, 8

Lesechka [4]

Answer:

+3 every time or the total?

Or is it 18? U specify which

7 0

3 years ago

Sarah belongs to a gym and health spa that is conveniently located between her home and her job. It is one of the nicer gyms in

Vera_Pavlovna [14]

Answer:

1) She would save money if she paid per-visit. She would only pay %72 of what she pays monthly

2) She goes to the gym %43 of the days of the year

3) If she goes every day to the gym, she would spend $150 per month if she paid per-visit, that is %67 more than the $90 monthly fee

Step-by-step explanation:

1) She goes to the gym 3 times per week, so she goes 3*4.3 = 12.9 times per month. Thus, if she were to pay only $5 per day instead of a monthly membership, she would spend 5*12.9 = $64.5 per month.

Therefore, she would save money if she paid on a per visit basis, by using a rule of three, we can conclude that she would spend only 64.5*100/90 = %72 of her monthly $90 fee.

2) If she goes 3 times per week, she is going 3 days out of 7, thus, she is going 3*100/7 = %43 days of the year.

3) If a month has 30 days, then she would spend 30*5 = $150 if she paid per-visit and she went to the gym every day. That is $60 more than the $90 she spends for her monthly membership, in other words, it is 60*100/90 = %67 more than the %90 monthly rate.

5 0

4 years ago