1answer.
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
Rina8888 [55]
2 years ago
8

Please help me I’m struggling

Mathematics
1 answer:
ryzh [129]2 years ago
4 0

Answer:

Step-by-step explanation:

Remark

This is a cosine law problem.

a = 12

b = 15

C = 83

Notice that the angle is enclosed by 2 given sides. That's what a cosine problem looks like (one of the two choices.

Formula

c^2 = a^2 + b^2 - 2ab*cos(C)

Solution

c^2 = 12^2 + 15^2 - 2*12*15 * cos(83)

c^2 = 144 + 225 - 360 * cos(83)

cos(83) = 0.1219

c^2 = 144 + 225 - 360 * 0.1219

c^2 = 369 - 43.884

c^2 = 325.116

sqrt(c^2) = sqrt(325.116)

c = 18.031

To the nearest tenth, the answer is 18.0 and you must include the 0.

You might be interested in
Solve the equation the square root of the quantity x plus 4 minus 3 equals 1 for the variable.
Kruka [31]

Answer:

x = 12

Step-by-step explanation:

sqrt(x+4) - 3 = 1

First get the sqrt all by itself on one side of the equation. Add 3 to both sides of the equation.

sqrt(x+4) = 1 + 3

sqrt(x+4) = 4

To "fix" the sqrt, that is, "undo it" and get rid of it, you have to SQUARE both sides of the equation.

(sqrt(x+4))^2 = 4^2

x + 4 = 16

subtract 4 to finish up.

x = 12

Check:

sqrt(12 + 4) - 3 = 1

sqrt16 - 3 = 1

4 - 3 = 1

1 = 1 Check!

6 0
1 year ago
Two fair coins are flipped. Given that at least one coin lands on a head, calculate the probability of one head and one tail. Wr
Greeley [361]

The probability of one head and one tail is 2/3.

<u>Step-by-step explanation</u>:

  • The possibilities for flipping two fair coins are {T,T}, {H,H}, {H,T}, {T,H}
  • Given the case that at least one coin lands on a head, So the total possibilities are {H,H}, {H,T}, {T,H} = 3 possibilities
  • Required event is 1 head and 1 tail= {H,T}, {T,H} = 2 possibilities

To calculate the probability of one head and one tail,

Probability = required events / Total events

Probability = 2/3

8 0
3 years ago
Find the length of the missing triangle. round your answer to three decimal places
Vedmedyk [2.9K]

Answer:

There is just one simple rules for find other side

Step-by-step explanation:

Think about a triangle and this triangle has 3 side it must have 90° on one edge. We assume the longest side is hipotenus x²+y²=hipotenus² . Look at your question hipotenus is 15 lets try to find other side. X²+12²=15² x=9

7 0
2 years ago
Which of the following is equivalent to the decimal? 0.2 A)1/5 B)2/7 C)1/2 D)2/9
Marrrta [24]

Answer: The answer is A

3 0
3 years ago
294 simplify the radicals
MrRissso [65]

7√6 or in decimal form it’s 17.1464819....
4 0
3 years ago
Other questions:
  • Diane made a design using only squares she shaded the inner square and outer region find the total area that is shaded explain h
    10·1 answer
  • Gilbert is graduating from college in twelve months, but he will need a loan in the amount of $5,125 for his last two semesters.
    12·1 answer
  • Help Me??????????????
    12·1 answer
  • Juan sells 2 sizes of dried wreaths it takes him 3 hours to make each large and 2 hours to make each small one. he has material
    7·1 answer
  • How to do a line plot to the nearest fourth inch
    6·1 answer
  • Mr. Wilson has $3000 in his bank account.Miss Nelson has 10 times as much money in her bank account as Mr. Wilson has in his ban
    12·2 answers
  • Select the correct answer
    10·1 answer
  • Select all fractions that are greater that 1/2
    8·1 answer
  • Select the correct answer.
    10·1 answer
  • I WILL MARK BRAINLIEST PLS HELP An artist mixes 2.25 ounces of red paint with 3.8 ounces of white paint. She then divides the pa
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!