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
Burka [1]
3 years ago
8

In triangle ABC, AC=13, BC=84, and AB=85. Find the measure of angle C

Mathematics
1 answer:
Lena [83]3 years ago
8 0

Answer:

90degrees

Step-by-step explanation:

To get the measure of angle C, we will use the cosine rule as shown;

AB² = AC²+ BC² - 2(AC)(BC)cos C

85² = 13²+ 84² - 2(13)(84)cos C

7225 = 169 + 7056 - 2184cosC

7225 - 7225 = -2184cosC

0 = -2184cosC

cosC = -0/2184

cosC = 0

C = arccos0

C = 90degrees

Hence the measure of angle C is 90degrees

You might be interested in
Calculate the area of the circle with radius of 4.5 leave Answer in terms of pi
aleksklad [387]
A=pi r^2
= 20.25 pi is the answer
8 0
3 years ago
What percent is 300 of 1l​
shusha [124]

Answer:

30%

Step-by-step explanation:

1L = 1000ml

--------------------

100%-> 1000

1%-> 10

300 ÷ 10 = 30%

7 0
3 years ago
SOMEONE PLEASEEEEW HELP ME OUTTT
garik1379 [7]

Answer:

  • By Double splitting method

=> 2x²-7x+5

=> 2x²-2x-5x+5

=>2x(x-1)-5(x-1)

<h2>=>(2x-5)(x-1)</h2>
  • x=5/2
  • x=1

______________

<em>Hope </em><em>it</em><em> </em><em>helps</em>

<em>-------☆゚.・。゚</em><em>ƒöᏝϗʆѻʁᶥąռ¹₃</em>

4 0
3 years ago
Help with this slope ​
gladu [14]

Answer:

20,100 I think

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
In automobile mileage and gasoline-consumption testing, 13 automobiles were road tested for 300 miles in both city and highway d
Aloiza [94]

Answer:

A. No

City driving mean requires less miles than Highway driving mean.

B. No

City driving median requires less miles than Highway driving median.

C. No

City driving mode requires less miles than Highway driving mode

D.

The driving conditions in the City is better than the driving conditions in the Highway because all measures of centers are lesser than those of Highway.

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • The figure shows the blueprint that a contractor uses to design ice-skating rinks. Which expression gives the area of the specta
    8·2 answers
  • Sandy has $200 in her bank account
    8·1 answer
  • Kevin went on a 15 3/5 mile hike. He stopped for a water break every 2 1/4 miles. How many times did Kevin stop for water?
    12·1 answer
  • 75 percent of 88 is the same as 60 percent of what number?
    5·1 answer
  • Your soccor team wants to buy T-shirts.You call two different companies about prices.Each company charges a price per T-shirt an
    8·1 answer
  • It is 1/2 mile from a student's home to a store and back. In a week, she
    8·1 answer
  • I need help which triangle theorem do I use for these
    11·1 answer
  • The picture frames shown are both squares. The area of the larger frame is 4 times the area of the smaller frame. Find the side
    15·2 answers
  • Pl help it’s For a grade I will give you Brainly
    8·1 answer
  • Ill give brainliest.....
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!