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
Oksi-84 [34.3K]
3 years ago
6

What is the area of triangle QRS? Q(-1 , 2) R(1 , -4) S(-2 , -2)

Mathematics
1 answer:
kogti [31]3 years ago
7 0

\left[\begin{array}{ccc}-1&2&1\\1&-4&1\\-2&-2&1\end{array}\right]

Find the determinant

D = [(-1).(-4).1 + 2.1.(-2) + 1.1.(-2)] - [1.(-4).(-2) + (-1).1.(-2) + 2.1.1]

D = [4 - 4 - 2] - [8 + 2 + 2]

D = -10 - 12

D = -22

A = |D|/2

A = |-22|/2

A = 22/2

A = 11

You might be interested in
Three divided by what equals 36
leva [86]
108 is the correct answer
8 0
3 years ago
Read 2 more answers
A man bought an old car for $1,10,000. He spent an additional 15% of the cost of repairs. Find the total cost of the car includi
nataly862011 [7]

This would be...

110000(1.15)=126500

answer:B

5 0
3 years ago
Billy watched the clown car drive up to the circus and saw
nekit [7.7K]
14%=56%
56%=56/100=0.56

14=0.56 of all
14=0.56 times all
divide both sides by 0.56
25=all


25 performers total
6 0
4 years ago
What is the sample space of two coins
Salsk061 [2.6K]
<h3>Answer: <u><em>Hope this helps</em></u></h3>

Step-by-step explanation:

<h3><u><em>For example, if the experiment is tossing a coin, the sample space is typically the set head, tail, commonly written For tossing two coins, the corresponding sample space would be (head,head), (head,tail), (tail,head), (tail,tail),</em></u></h3>

<u><em /></u>

3 0
4 years ago
What is the value of x in the diagram
Rufina [12.5K]

Answer:

B. 6.2

Step-by-step explanation:

5(5 + x) = 4(4 + 10) \\  \\ 25 + 5x = 4(14) \\  \\ 25 + 5x = 56 \\  \\ 5x = 56 - 25 \\  \\ 5x = 31 \\  \\ x =  \frac{31}{5}  \\  \\ x = 6.2

6 0
3 years ago
Other questions:
  • Can anyone help me with this problem?
    13·2 answers
  • -10-|1+4b|=-19<br> Y = 0
    6·1 answer
  • How to find the properties of 6x89?
    6·1 answer
  • What is 6 3/4 in decimals
    7·2 answers
  • Tom rolls 2 fair dice and adds the results from each. Work out the probability of getting a total that is a factor of 21.
    5·1 answer
  • Graph the function.<br> h(x) = -4(x– 3) (x - 1)
    12·1 answer
  • Max travel 2 miles and Jason travel 20 miles.together they travel
    9·2 answers
  • Plz help me solve this​
    11·2 answers
  • Can I please have help on 3, 4 will mark brainiest thank you.
    8·1 answer
  • Joshua's cousin pledged $12 for a charity walk. If Joshua walked 3 miles, how much did his cousin pay per mile?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!