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
Bond [772]
2 years ago
14

For questions 9 and 11, solve for the remaining angles.

Mathematics
1 answer:
maw [93]2 years ago
4 0

Answer:

‹A = 141°

‹B = 28°

‹C = 11°

*These angles are rounded to the nearest whole*

Step-by-step explanation:

Because you are only given sides you can find an individual angle measures with the inverse law of cosines.

Remember the side opposite of the angle corresponds to that angle.

a² = b² + c² - 2bc cos(A) →

A = cos⁻¹ (a² - b² - c² / -2bc)

b² = a² + c² - 2ac cos(B) →

B = cos⁻¹ (b² - a² - c² / -2ac)

c² = a² + b² - 2ab cos(C) →

C = cos⁻¹ (c² - a² - b² / -2ab)

You might be interested in
What is the solution to y + 7 = -9 A. y = -16 B. y = -2 C. y = 2 D. y = 16
Helen [10]

Answer:

A. y = -16

Step-by-step explanation:

Hello!

What we do to one side of the equation we have to do to the other.

y + 7 = -9

We have to get y by itself so we have to get rid of the seven by doing the opposite of what it says

The opposite of addition is subtraction so we subtract 7 from both sides

y + 7 - 7 = -9 - 7

Solve

y + 0 = -16

Simplify

y = -16

The answer is A. y = -16

Hope this helps!

4 0
3 years ago
Y is inversely proportional to x.
Inessa [10]

Answer:

1. xy = 63

2. y = 3

Step-by-step explanation:

Given

Variation: inverse Proportion

y = 7, x = 9

Required

- Write an equation connecting y and x

- Find y when x = 21

Given that thee variation is inversely proportional;

This implies that

y\ \alpha\ \frac{1}{x}

Convert variation to equation

y\ = \frac{k}{x} ----------- Equation 1

Where k is the constant of variation

Substitute 7 for y and 9 for x in equation 1

7 = \frac{k}{9}

Multiply both sides by 9

9 * 7 = 9 * \frac{k}{9}

63 = k

Substitute 63 for k in equation 1

y = \frac{63}{x}

Multiply both sides by x

x * y = \frac{63}{x} * x

xy = 63

Hence, the equation connecting x and y is xy = 63

Solving for when x = 21

Substitute 21 for x in the above equation

21 * y = 63

Divide both sides by 21

\frac{21 * y}{21} = \frac{63}{21}

y = 3

4 0
3 years ago
Can someone do this for me?
Amanda [17]
Are theese questions or your  answers

if there answers they seem all right
7 0
3 years ago
Solve. 2a + 3b = 5 6= a -5 a = 4 b = -1 1 a = 6 b=1 a=6 6 = -1 a=4 6 = 1<br>​
slamgirl [31]

Answer:Solve. 2a + 3b = 5 6= a -5 a = 4 b = -1 1 a = 6 b=1 a=6 6 = -1 a=4 6 = 1

Step-by-step explanation:

3 0
3 years ago
Waf number us 20% of 40
NikAS [45]

Answer:. .

Answer:

20% of 40 is 8

6 0
2 years ago
Other questions:
  • Julie is selling candy bars to raise money for new band uniforms. Candy bar X sells for $2 and candy bar Y sells for $3. Julie n
    13·2 answers
  • This graph models the exponential growth of the strain of bacteria. What does the ordered pair (15, 8) represent?
    11·2 answers
  • The answer choices are
    10·2 answers
  • Help plz
    6·2 answers
  • Divide 7 by 2,then multiply 9by the results
    9·2 answers
  • Someone pls answer this correctly pls ! IXL Geometry area between two shapes.
    7·2 answers
  • You run 20 laps in 6 minutes. your friend runs 30 laps in 9 minutes. are you the rates equivalent
    11·2 answers
  • Please help <br> A. SAS<br> B. AAS<br> C. HA<br> D. LL<br> E. ASA<br> F. HL
    11·1 answer
  • Ssion 4 x (20 – 1) if a = 3?<br> What the answer?
    11·2 answers
  • How do I get the answer to this step by step? pls this is a emergency
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!