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
gtnhenbr [62]
2 years ago
13

(Refer to the attached image)​

Mathematics
1 answer:
gayaneshka [121]2 years ago
8 0

Explanation:

Provided <u>2 length sides</u> and <u>one angle</u> also need to find <u>one missing side</u>.

So, use cosine rule:

a² = b² + c² - 2bc cos(A)

<h3><u>Part 1</u></h3>

c² = 9² + 11² - 2(11)(9) cos(57)

c² = 94.16147

c = √94.16147 = 9.70 cm

<h3><u>Part 2</u></h3>

d² = 5² + 7² - 2(5)(7) cos(48)

d² = 27.16

d = √27.16 = 5.21

<h3><u>Part 3</u></h3>

5² = 7² + 9² - 2(7)(9) cos(H)

-126cos(H) = 25 - 49 - 81

cos(H) = -105/-126

cos(H) = 5/6

H = cos⁻¹(5/6) = 33.56°

<h3><u>Part 4</u></h3>

8² = 4² + 7² - 2(4)(7) cos(J)

-56cos(J) = 64 - 16 - 49

cos(J) = -1/-56

J = cos⁻¹(1/56) = 88.98°

Passcode: 3142

You might be interested in
Solve -4x+2&gt;26<br><br> A. x &gt; -6<br><br> B. x &gt; 6<br><br> C. x &lt; 6<br><br> D. x &lt; -6
NikAS [45]

Answer:

D

Step-by-step explanation:

-4 * -6 is -34

add 2 and you have -24

6 0
3 years ago
Work out 2/15 of 5 Give your answer as a fraction in its simplest form.​
docker41 [41]

Answer:

2/3

Step-by-step explanation:

2/15 of 5

Of means multiply

2/15 * 5

Multiply the numerators

2*5 = 10

Put over the denominator

10/15

We can divide the top and bottom by 5

10/5 =2

15/5 =3

2/3

5 0
2 years ago
Evaluate <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bu%7D%7Bz%7D%20%2Bxy%5E3" id="TexFormula1" title="\frac{u}{z} +xy^3" alt="\f
Elanso [62]
The explanation is on the board just tell me if you have questions

8 0
3 years ago
I will give you 80 points If you help me please help me
Mnenie [13.5K]

Answer:

Elevator 1 is 16 feet above ground level, and elevator 2 is 25 feet below ground level

Step-by-step explanation:

Elevator one is moving up, so it means it's above ground level since it started on the ground

Elevator is moving negative floors, so it is moving below.

Let me know if you have any questions!

6 0
3 years ago
A constuction crew is extending a highway sound barrier that is 13 miles long. That crew builds 1/2 of a mile per week. Write an
dusya [7]
The equation is y = 1/2 x + 13, where x is the number of days, and y is the length of the barrier
8 0
3 years ago
Other questions:
  • In the coordinate plane, what is the length of the line segment that connects points at (0, −1) and (−7, −2) ?
    12·1 answer
  •   What values for θ (0 ≤ θ ≤ 2pie ) satisfy the equation? 
    5·1 answer
  • A dust particle weighs 7.42 × 10-10 kilograms. What is the weight of 5 × 106 dust particles represented in scientific notation?
    7·2 answers
  • A 20 kg bag of bananas for $10<br><br><br> ______ per kg
    6·2 answers
  • The piano measures 19/4 ft long. There's a 5ft long space in her house Can it fit
    15·2 answers
  • 6 xy × 4 = 2 x72 please koi solutions do​
    13·2 answers
  • Image down below thx
    14·2 answers
  • I dont understand help me please <br>​
    8·1 answer
  • HELPPPP
    14·1 answer
  • Solve for x.<br> 144°<br> 18 degrees<br> 30 degrees<br> 48 degrees<br> 120 degrees
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!