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
timama [110]
3 years ago
15

Need help with these 3 questions (giving brainiest if you can answer with equations)

Mathematics
1 answer:
Tpy6a [65]3 years ago
8 0

Problem 10

<h3>Answer: approximately 57.39159 km</h3>

Explanation: You'll use the equation cos(28) = d/65 to solve for d to get d = 65*cos(28) = 57.39159 approximately. We use the cosine ratio because it ties together the adjacent and hypotenuse.

=====================================

Problem 11

<h3>Answer: approximately 10.46162 meters </h3>

Explanation: This time we use the sine rule. We have the height as the opposite side (which is unknown, call it x) and the hypotenuse is the ladders length (11). So we have sin(72) = x/11 which solves to x = 11*sin(72) = 10.46162

=====================================

Problem 12

<h3>Answer: approximately 16.05724 cm</h3>

Explanation: Now we use the tangent rule to connect the opposite and adjacent sides.

tan(37) = 12.1/x

x*tan(37) = 12.1

x = 12.1/tan(37)

x = 16.05724 approximately

You might be interested in
(13.01 LC) What is the value of the expression 7 +(16 - 7) = 3 + 8? (2 points) O 12 O 15 O 17 O 18 Question 3​
Karo-lina-s [1.5K]

Answer:

16 > 11

Step-by-step explanation:

7 + (16 - 7) = 3 + 8

7 + 9 = 3 + 8

16 = 3 + 8

16 ≠ 11

or

16 > 11

4 0
2 years ago
Help me solve those show work 3(2a-5)=12-7a, 27=3c-3(6-2c)and 6c-8-2c=-16
posledela
3(2a-5) = 12-7a
6a-15=12-7a
6a+7a=12+15
13a= 27

27=3c-3(6-2c)
27=3c-18+6c
27+18=3c+6c
45=9c
C=45/9
C=5

6c-8-2c=-16
6c-2c=-16+8
4c=-8
C=-8/4
C=-2
3 0
3 years ago
8. Calculate<br> 341) + 35)<br> ༣༨
Marta_Voda [28]

Answer: 341 + 35 = 376

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What are the coordinates of A’, the image of A(-7, 9), after a rotation of -180° about the origin?
Dmitry_Shevchenko [17]

Answer:

7,-9

Step-by-step explanation:

4 0
3 years ago
Help help help help help
Sindrei [870]
DONT PRESS THE LINK ABOVE ! ITS A SCAM
3 0
3 years ago
Other questions:
  • Quiz
    15·1 answer
  • -3x + 5x +-3= 4x + 5x
    6·2 answers
  • (2x+8)+(71-x)=180 what is the x
    10·1 answer
  • Solve by using the quadratic formula x^2-14x+49=0
    5·1 answer
  • Middle school math please help, thank you!
    8·2 answers
  • The mean temperature for the first 7 days in January was 3 °C.
    11·2 answers
  • 6 times a number is 16 less than the square of that number. Find the positive solution.
    5·1 answer
  • Find the measure of ZC. Write your answer as a decimal.
    12·1 answer
  • Does anyone know this? No links
    10·2 answers
  • The average cost of 3 books 3:2:5 is $50. How much does each book cost?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!