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
marusya05 [52]
3 years ago
13

Find m PLEASE HELP 10 POINTS!!

Mathematics
2 answers:
artcher [175]3 years ago
8 0
Use the cos rule

cos^-1(18^2+28^2-12^2 divided by 2*18*28

Which is 16.99 degrees, which is 17 (option d)
Iteru [2.4K]3 years ago
6 0

Answer:

<em>(D). 17 in.</em>

Step-by-step explanation:

c² = a² + b² - 2abcosC

cosC = \frac{a^2 + b^2 -c^2}{2ab}

m∠C = cos^{-1} ( \frac{a^2 + b^2 -c^2}{2ab} )

m∠C = cos^{-1} ( \frac{28^2 +18^2 -12^2 }{2(28)(18)} )

<em>m∠C </em>= cos^{-1} ( \frac{964}{1008} ) ≈<em> 17 in.</em>

You might be interested in
Aran moved a cone-shaped pile of sand that had a height of 4 ft and a radius of 3.2 ft. He used all of the sand to fill a cylind
Yuliya22 [10]
So volue of a cone=area of circle base times heigt times 1/3

height=4
area of base=pi times r^2
area of abse=aprox 3.14 times 3.2^2=32.1536
32.1536 times 4 times 1/3=32.1536 times 4/3=42.87 the amount of sand is 42.9 ft^3
5 0
3 years ago
Graph the line whose x-intercept is -1 and whose y-intercept is 4.<br> x<br> 5<br> ?
shepuryov [24]

Answer:

the x axis is the one that lies flat horizontal this is called the run. the y intercept is the one that goes up and down standing. now you have to plot a dot on the line x moving toward the negative 1 and go up to y meeting up to 4 and that should give you the line to graph

7 0
3 years ago
Evaluate the function for x = 3a. f(x)=2x^2-3x 4
Dmitry_Shevchenko [17]
Hello,

f(x)=2x^2-3x+4
f(3a)=2(3a)^2-3*(3a)+4=2*9a²-9a+4=18a²-9a+4
5 0
3 years ago
Find the slope of the graph. Write it as a
Verdich [7]

Answer:

2/3

Step-by-step explanation:

use rise over run. you may pick two y values and 2 x values and say (y2-y1)/(x2-x1). here I used (3-1)/(3-0)

6 0
3 years ago
Read 2 more answers
Superman needs to save Lois. After flying for 10 seconds he is 1520 meters from her then at 15 seconds he is 1230 meters from he
Sunny_sXe [5.5K]
Average speed is 58 meters per second
8 0
3 years ago
Other questions:
  • Mrs. Kelly creates a garden. She buys 15 flowers and 3 bushes for a total cost of $160.32. Each bush costs $11.50 more than each
    13·1 answer
  • You roll two dice. What is the probability that the sum of the dice is greater than 7 and one dice shows a 2? A 6x6 table of dic
    10·1 answer
  • a car deceased in value by 25% in the first year. purchased for $28,000, what is the car worth today.
    13·1 answer
  • Thirteen students entered the business program at Sante Fe College 2 years ago. The following table indicates what each student
    14·1 answer
  • All irrational numbers are integers
    6·1 answer
  • What is the slope intercept form of y-3=1/2(x-1)
    10·1 answer
  • Maria's math test had 25 questions. she got 84% correct. how many problems did she get wrong?
    13·1 answer
  • What is 26% of $29.50?
    10·2 answers
  • If alex is visiting her moms house and eats a pizza that has 6 triangular pieces, how long would it take for alex’s mom to reach
    12·1 answer
  • A 2-liter bottle of juice costs $2.80. A box containing six 12-liter bottles sells for $3.90. Which option has a higher cost per
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!