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
Doss [256]
3 years ago
12

Trong mặt phẳng Oxy cho M (1;-1) ;N (3;2) ; P (0;-5) lần lượt là trung điểm của các cạnh BC,CA và AB của tam giác ABC . Hãy tìm

tọa độ điểm A.
Mathematics
1 answer:
Andru [333]3 years ago
6 0

Answer:

I really dont understand I'm really sorry

You might be interested in
Find the area of the composite figure in terms of the figure (use 3.14 for pi)​
svp [43]

Answer:

105.12 ft²

Step-by-step explanation:

Let's first find the area of the rectangle.

10\cdot8=80 ft², so the rectangle has an area of 80ft².

To find the area of the semi-circle, we find the area of a whole circle and divide by two.

The formula to find the area of a circle is \pi r^2. The radius is 4, as the diameter is 8.

3.14\cdot4^2

3.14\cdot16

50.24\div2=25.12

Add 80 and 25.12:

80+25.12=105.12

Hope this helped!

5 0
3 years ago
50 points for whoever answers the right answer
Olin [163]

Answer:

128

Step-by-step explanation:

Supplementary means they sum to 180, and it's also a straight line. 180-49 = 131. 131-3 = 128, or x.

6 0
2 years ago
Read 2 more answers
the Length breadth and height of a room are 5 metre 4 metre and 3 respectively find the cost of whitewashing the walls of the ro
eduard

Answer:

its going to be 2&3(x+2)(x+3)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Very buys a basket of mangoes that is priced $14 before tax. ​ ​The sales tax is 6%. ​ ​What is the total price Avery pays for t
igor_vitrenko [27]

Answer:

Avery needs to pay $14.84

Step-by-step explanation:

When there's a tax we need to sum the original value of the product with the tax's value. To find the amount of money Avery needs to pay in taxes we can apply a rule of three as shown below:

\frac{14}{x} = \frac{100}{6} \frac{\%}{\%}

Where "x" is the tax value, and $14 represents 100%, since it's the value used to calculate the tax. We have:

x = \frac{14*6}{100}\\x = \frac{84}{100}\\x = 0.84

The value to be paid is the product value plus the tax, therefore:

\text{paid} = 14 + 0.84 = 14.84

Avery needs to pay $14.84

6 0
3 years ago
QUESTION 1
Kitty [74]

It's difficult to make out what the force and displacement vectors are supposed to be, so I'll generalize.

Let <em>θ</em> be the angle between the force vector <em>F</em> and the displacement vector <em>r</em>. The work <em>W</em> done by <em>F</em> in the direction of <em>r</em> is

<em>W</em> = <em>F</em> • <em>r</em> cos(<em>θ</em>)

The cosine of the angle between the vectors can be obtained from the dot product identity,

<em>a</em> • <em>b</em> = ||<em>a</em>|| ||<em>b</em>|| cos(<em>θ</em>)   ==>   cos(<em>θ</em>) = (<em>a</em> • <em>b</em>) / (||<em>a</em>|| ||<em>b</em>||)

so that

<em>W</em> = (<em>F</em> • <em>r</em>)² / (||<em>F</em>|| ||<em>r</em>||)

For instance, if <em>F</em> = 3<em>i</em> + <em>j</em> + <em>k</em> and <em>r</em> = 7<em>i</em> - 7<em>j</em> - <em>k</em> (which is my closest guess to the given vectors' components), then the work done by <em>F</em> along <em>r</em> is

<em>W</em> = ((3<em>i</em> + <em>j</em> + <em>k</em>) • (7<em>i</em> - 7<em>j</em> - <em>k</em>))² / (√(3² + 1² + 1²) √(7² + (-7)² + (-1)²))

==>   <em>W</em> ≈ 5.12 J

(assuming <em>F</em> and <em>r</em> are measured in Newtons (N) and meters (m), respectively).

3 0
3 years ago
Other questions:
  • How many solutions does this linear system have?
    9·1 answer
  • 1,127.5 milligrams = how many grams
    9·2 answers
  • Pls help ! given: DR tangent to circle O. if m RDC= 150, then m DAC.<br> a. 75<br> b. 150<br> c. 300
    12·1 answer
  • Is c=$75x an equation if not how would i turn this into an equation.
    6·1 answer
  • If you have 3 trillion dollars and a cop charges you 20,000 how much do you have left
    5·1 answer
  • Two joggers run 12 miles north and then 5 miles west. What is the shortest distance they must travel to return to their starting
    9·1 answer
  • Which of the following relations , if any is a function. Please help with this one
    10·1 answer
  • HELP PLEASE!!! i do not understand
    9·1 answer
  • What are all of the solutions to the equation 2y2 = 64? <br> ±32 <br> ±√ 2 <br> ±4√ 2<br> ±8
    14·1 answer
  • Plz help me I am bad at math
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!