answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stellarik [79]
1 year ago
7

ΔABC has three sides with these lengths: AB = 9, BC = 40, and CA = 41. What is the value of cos C?

Mathematics
1 answer:
Effectus [21]1 year ago
6 0
From the Law of Cosines
Cos (C) = (a^2 + b^2 -c^2) / 2 * a * b
Cos (C) =(40^2 + 41^2 -9^2) / 2 * 40 * 41
Cos (C) = 1,600 + 1,681 - 81 / 3,280
Cos (C) = 3,200 / 3,280
Cos (C) = <span> <span> <span> 0.9756097561 </span> </span> </span>
Incidentally, Angle C = 12.68 Degrees


You might be interested in
A printer prints an average of 200 1/2 pages per hour approximately how many pages did it print in an 8 hour period
Vika [28.1K]

Answer:

1,604 pages

Step-by-step explanation:

Let’s make a proportion

The printer prints 200 1/2, or 200.5 pages per hour, and prints x pages per 8 hours

200.5/1=x/8

Cross multiply

1*x=200.5*8

x= 1604

So, the printer prints 1,604 pages in & hours

7 0
1 year ago
HELP QUICK!
USPshnik [31]

Answer:

Eric will win if Nita chooses 7 and he chooses and number that is less than 17 (ex. n<17).

Nita will win if Eric chooses 17 and she chooses a number less than 8 (ex. n<8).

3 0
2 years ago
Melanie is very concerned with avoiding late fees. The table shows her choices for paying her bills. Method Bill Payment Methods
pshichka [43]

Answer:

3

Step-by-step explanation:

8 0
1 year ago
Read 2 more answers
June has a credit card balance of $4,350 that comes with a 19% APR. She would like to have the balance paid off in the next 8 mo
omeli [17]
It's B on E2020, I just took the test.
3 0
1 year ago
Read 2 more answers
during the summer winnie delivers flowers and bob babysits for neighbors to show their earnings winnie makes a table which state
miv72 [106K]
  1. Winnie earns $12.30 and Bob earns $24.30.
  2. Bob earns $8.10 and earns$4.10
  3. Winnie earns$12.15 and Bob earns $6.15
  4. Winnie earns $4.05 and Bob earns $2.05

7 0
1 year ago
Read 2 more answers
Other questions:
  • In a computer game, A bird flies at a height of 1,281 feet. At the same time of fish swims 282 feet below sea level what is the
    10·2 answers
  • Marcel is nearing graduation. He just met with his counselor and she showed him this information.
    9·2 answers
  • A new movie is released each year for 12 years to go along with a popular book series. Each movie is 3 minutes longer than the l
    13·1 answer
  • Amy began with 5 marbles for every 3 marbles that tara had. After amy gave 1 marble to tara, amy ended up with 3 marbles for eve
    12·2 answers
  • The time needed to complete a final examination in a particular college course is normally distributed with a mean of 79 minutes
    11·1 answer
  • Jacoby followed a recipe that requires 2 cup for water four every 3 cups of flours. if he used 8 cups flours, how many cups of w
    5·1 answer
  • An airplane cruises 1 kilometer in 1/12 of a minute. What is its cruising speed?
    14·1 answer
  • 100 random samples were taken from a large population. A particular numerical characteristic of sampled items was measured. The
    11·1 answer
  • Thom’s restaurant bill is $45 and he leaves a 20 percent tip. What is the total cost for Thom’s meal?
    8·2 answers
  • Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!