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
zzz [600]
3 years ago
11

Can someone help with 8&10

Mathematics
1 answer:
stiv31 [10]3 years ago
3 0

8. Answer:  (C) 101.3

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

Use the Law of Cosines:

c² = a² + b² - 2ab·cos C

28.2² = 16.9² + 19.5² - 2(16.9)(19.5)·cos C

795.24 = 285.61 + 380.25 - 659.1 cos C

795.24 = 665.76 - 659.1 cos C

129.38 = - 659.1 cos C

-0.196 = cos C

cos⁻¹ (-0.196) = cos⁻¹ (cos C)

101.3 = C

**********************************************************

10. Answer:  (A) 27.9

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

Use the Law of Cosines:

c² = a² + b² - 2ab·cos C

c² = 25² + 18² - 2(25)(18)·cos 79

c² = 625 + 324 - 900 cos 79

c² = 949 - 171.7

c² = 777.3

√c² = √777.3

c = 27.9

You might be interested in
5+5 you get 52 points for answering this question
Aleks [24]

Answer:

10

Step-by-step explanation:

We're looking for 5 + 5:

x = 5 + 5

Since 5 + 5 = 10:

x = 5 + 5

x = 10

Answer: 10

4 0
3 years ago
Whoever gets this correct first gets brainlest!!
nika2105 [10]

D. f(x)=4 (5/2)^x

Are really good tool for graphing problems is Demos.com

4 0
3 years ago
What is the square root of 4
Masja [62]

Answer:

√4 = 2

Because 2 × 2 = 4

If you want to get square root of any number find the number which you can multiply two times to give you that certain number

8 0
2 years ago
Which of the following number lines shows the solution to the inequality given below? 4x+7&lt;-36 OR 5x+3&gt;-7
MissTica

Answer:

You have the right answer

Step-by-step explanation

4 0
3 years ago
Complete each question by choosing or typing in the best answer.​
Fantom [35]
Where are the questions
7 0
3 years ago
Other questions:
  • A local grocery store has plans to construct a rectangular parking lot that is bordered on one side by a highway. there are 1280
    15·1 answer
  • What is 2(95x-24)+8(67x-10)=7x-28+30
    8·2 answers
  • What is 61/4 as a decimal
    10·1 answer
  • If June has 3,756 toys and each bin can hold 30 toys what would be the left over amount of toys ?
    11·2 answers
  • Gina is putting books on a shelf that is 21 2⁄3 inches long. If each book is 2 1⁄3 inch wide, how many books can she fit on the
    5·1 answer
  • X+2y=-4<br> find slope:<br> x-intercept:<br> y-intercept:
    15·2 answers
  • June needed 1 1/2 spoons of lemon juice to make a lemon cake. How much lemon juice would she need to make 4 lemon cakes? CLUE: M
    5·1 answer
  • Find the surface area of the right rectangular prisim
    15·1 answer
  • P is the midpoint of (DE) . (DE) is equal to 10x-2, and (PE) is equal to 4x+7. What is the length of (DP) ?
    7·1 answer
  • 123 – 3y + 3z + 44 =
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!