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
ser-zykov [4K]
3 years ago
7

The three sides of a triangle are 4cm, 6cm and 8cm.

Mathematics
1 answer:
yarga [219]3 years ago
6 0

Answer:

In bold below.

Step-by-step explanation:

(a) The largest angle is opposite the largest side.

So by the Cosine Rule:

8^2 = 4^2 + 6^2 - 2*4*6 cos x

cos x =  (8^2 - 4^2 - 6^2) / (-2*4* 6)

= -0.25.

x = 104.48 degrees.

(b) Area of the triangle = 1/2 * 4 * 6 sin 104.48

= 11.62

= 3 √15.

(c)  The shortest altitude will have the longest sides as the base.

Area = 1/2 * altitude * base

3√15 = 1/2 * 8 * a

a = 3√15 / 4 cm

= 0.75√15 cm.

You might be interested in
Complete the missing parts of the paragraph proof.
sleet_krkn [62]

Answer: n-3, n-2, 180, and 180(n-2)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Arabella's password consists of 1 letter followed by two digits. What is the probability of correctly guessing Arabella's passwo
Alchen [17]
The answer is 1/2600

Hope this helps
6 0
3 years ago
Select the correct answer from each drop-down menu.
lesantik [10]

Answer: The sample mean is 14.98

The second one is NOT standard deviation

Step-by-step explanation: Sorry thats all i got but good luck!

7 0
2 years ago
Eggs are put in tray of 12, the trays are packed in boxes, each box contains 180 eggs. How many trays are in each box
s2008m [1.1K]
15


180/12=15.

That is the equation since we know the box has 180 eggs, and the eggs have to be separated into 12
4 0
3 years ago
which is true about the degree of the sum and difference of the polynomials 3x5y – 2x3y4 – 7xy3 and –8x5y 2x3y4 xy3? both the su
Ipatiy [6.2K]
3x^5y - 2x^3y^4 - 7xy^3 -8x^5y+ 2x^3y^4+ xy^3=-5x^5y-6xy^3
3x^5y - 2x^3y^4 - 7xy^3 +8x^5y- 2x^3y^4- xy^3=-4x^3y^4+11x^5y-8xy^3
The sum has a degree of 6 but the difference has a degree of 7.

5 0
3 years ago
Read 2 more answers
Other questions:
  • I don't get this probken
    7·2 answers
  • If B is the midpoint of line AC, AC=CD, AB=3x+4, AC=11x-17, and CE=49, find DE
    14·1 answer
  • An animal shelter had 28 puppies. If the puppies are 28℅ of the total dog and cat population, how many dogs and cats are in the
    9·1 answer
  • 3 3/7 x 5 1/8 in simplest form?
    8·1 answer
  • The basketball team wants to score 48 points per game this season. They will play a total of 8 games. The team want to score ___
    11·2 answers
  • Factorise 2a – 4a3 + 6abc
    14·1 answer
  • A circle has a circumference of 50.24 feet. What is the radius? Use 3.14
    8·1 answer
  • This probability distribution shows the typical grade distribution for a Geometry course with 35 students. Find the probability
    11·2 answers
  • What property is 2/5 x 5/2 = 1
    9·1 answer
  • the coordinates of the vertex of a parabola in the xy-plane are (-4,k). If the y-intercept of the parabola is 12 and the parabol
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!