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
CaHeK987 [17]
3 years ago
11

PLEASE HELP ME THANK YOU. ALSO PLEASE INCLUDE EXPLANATION

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
6 0

Given

the lengths of the 3 sides of a triangle

Find

the angle opposite the longest side

Solution

Strategy: make use of the Law of Cosines, which relates an angle and the three sides of a triangle.

... a² = b² + c² -2bc·cos(A)

... cos(A) = (b² + c² - a²)/(2bc) . . . . . . . solve for cos(A)

... A = arccos((b² + c² - a²)/(2bc))

Fill in the given values and evaluate.

... A = arccos((55² + 50² - 90²)/(2·55·50)) = arccos(-2575/5500)

... A ≈ 117.9°

You might be interested in
What’s the answer to (-8x) + x + (-2x)
Tresset [83]

(-8x) + x + (-2x) = -8x + x - 2x = -9x

8 0
3 years ago
Read 2 more answers
Requie<br> 2) 20 + (-45)
harkovskaia [24]

Answer:

20 + (-45) = -25

6 0
3 years ago
Read 2 more answers
During a nine-hour snowstorm, it snows at a rate of 2 inches per hour for the first 3 hours, at a rate of 3 inches per hour for
Softa [21]

Answer:

use f(x)=y=mx+b

let snow = S, time = t instead of y and x

S(t)=mt+b

The rate of inches per hour represents the slope of the graph, m.

The y-variable would be the amount of snow, S.

The x-variable would be the time, t, in hours.

The function has three pieces:

i) S(t)= 2t (slope = 2)

ii) S(t) = 3t (slope = 3)

iii) S(t) = 0.75t (slope = 0.75)

For the first piece, i), t=3, so the amount of snow is 6 inches.

For the second piece, ii) t=5, so the amount of snow is 15 inches.

For the third piece, iii) t=1, so the amount of snow is 0.75 inch.

In total, it snowed 21.75 inches.

total snow

4 0
4 years ago
What is the slope of this line. Please see image below
Mariulka [41]

Answer:

-2

Step-by-step explanation:

I mean i use the slope formula m = (y_{2} - y_{1}) / (x_{2} - x_{1}) and you just plug in the values of the coordinates.  

3 0
3 years ago
Read 2 more answers
How many leaves on a tree diagram are needed to represent all possible combinations tossing a coin 3 times?
Anika [276]
N = 3 is the number of times the coin is tossed. Since there are 2 outcomes per toss, this means that there are 2^n = 2^3 = 2*2*2 = 8 outcomes total. Therefore, there are 8 leaves total. 

If we make
H = heads
T = tails

Then here are the 8 outcomes in the sample space
HHH
HHT
HTH
THH
HTT
THT
TTH
TTT


8 0
3 years ago
Read 2 more answers
Other questions:
  • Alejandro and Pedro are ring their bikes to school, after one mile they are 5/8 of the way there how much farther do they have t
    8·1 answer
  • Unit: Proportional Relationships
    9·1 answer
  • Round 339.4749 to the nearest hundredth
    5·2 answers
  • Which of the following is a solution of x2 − 10x = –36? negative 5 minus i square root of 10 5 plus i square root of 61 negative
    7·1 answer
  • PLEASE PLASE PLEASEEEE HELP!!!!!!! <br> Find the area and perimeter!
    5·1 answer
  • Anyone know the answer to this algebra problem?
    11·1 answer
  • 12. From a rope 68 m long, pieces of equal size are cut. If length of one piece is 4/14 m, find the number of such pieces.
    12·2 answers
  • If a seed is planted, it has a 95% chance of growing into a healthy plant.
    15·1 answer
  • HELP PLEASEEEEE, I'LL GIVE BRAINLEST​
    7·1 answer
  • Help needed....Step by step solution required..<br>the correct answer will get brainliest..​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!