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
Scilla [17]
3 years ago
7

Help with Pythagorus 3D maths homework really fast please!!!!!! Awarding brainliest

Mathematics
1 answer:
Blababa [14]3 years ago
6 0

Answer:

x = 20 / √3 = 20√3 / 3

Step-by-step explanation:

AC² = AD² + BC² = x² + x² = 2 x²

AF² = AC² + CF² = 2 x² + x² = 3 x²

3 x² = 20² = 400

x² = 400/3

x = 20 / √3 = 20√3 / 3

You might be interested in
Pls, help me with this math question
olya-2409 [2.1K]

Answer:

Perimeter \sqrt{26}+\sqrt{5}+\sqrt{10}+\sqrt{17} units.  Area 12 square units.

Step-by-step explanation:

Perimeter: total distance around the figure.

Distance Formula:  the distance between points \left(x_1,y_1\right) \text{ and } \left(x_2,y_2\right) is

d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

AB=\sqrt{(6-1)^2+(2-1)^2}=\sqrt{25+1}=\sqrt{26}

BC=\sqrt{(5-6)^2+(4-2)^2}=\sqrt{1+4}=\sqrt{5}CD=\sqrt{(2-5)^2+(5-4)^2}=\sqrt{9+1}=\sqrt{10}DA=\sqrt{(1-2)^2+(1-5)^2}=\sqrt{1+16}=\sqrt{17}

The perimeter is the sum of all those segment lengths.

One way to find the area of the figure is to surround it with a rectangle, insert some lines so that the areas you do not want can be found and subtracted from the rectangle's area.  (See attached image.)

The area of the large rectangle around the figure is 5 x 4 = 20 square units.

The triangles have areas 1/2 (base) (height):

A. (1/2)(1)(4) = 2 square units

B. (1/2)(3)(1) = 1.5 square units

D. (1/2)(1)(2) = 1 square unit

E. (1/2)(5)(1) = 2.5 square units

Square C.  (1)(1) = 1 square unit

Total of all the area you don't want to include:

2 + 1.5 + 1 + 2.5 + 1 = 8 square units

Subtract 8 from the surrounding rectangle's area of 20, and you get the area of the figure is 20 - 8 = 12 square units.

4 0
3 years ago
Graph the system of equations. Then determine whether the system has no solution, one solution, or infinitely many solutions. If
natima [27]

Answer:

  d)  one solution; (4, 1)

Step-by-step explanation:

It often works well to follow problem directions. A graph is attached, showing the one solution to be (4, 1).

_____

You know there will be one solution because the lines have different slopes. Each is in the form ...

  y = mx + b

where m is the slope and b is the y-intercept.

The first line has slope -1 and y-intercept +5; the second line has slope 1 and y-intercept -3. The slope is the number of units of "rise" for each unit of "run", so it can be convenient to graph these by starting at the y-intercept and plotting points with those rise and run from the point you know.

6 0
3 years ago
Please help its hard btw
Rudiy27

Answer:

4213

Step-by-step explanation:

go to the numbers that pop out and do it backwards.

7 0
3 years ago
A textbook in the college bookstore had an original price of $185.50. Since then the inflation rate has been 4%. Find the curren
lbvjy [14]
So you want to multiply 185.5 by 1.04 to get the 4% inflation. if you do that then you get 192.92
8 0
3 years ago
Read 2 more answers
Find the volume of the pyramid.<br><br> A) 22 cm3<br> B) 264 cm3<br> C) 132 cm3<br> D) 44 cm3
Stolb23 [73]
264 cm3.
Length * width * height gives the volume of a shape.
5 0
2 years ago
Other questions:
  • How many whole numbers between 1 and 1000 do not contain the digit 1?
    6·1 answer
  • <img src="https://tex.z-dn.net/?f=f%28x%29%3D-4x%5E%7B2%7D%2B5x" id="TexFormula1" title="f(x)=-4x^{2}+5x" alt="f(x)=-4x^{2}+5x"
    15·1 answer
  • Need halp fast
    11·1 answer
  • Complete the identity.<br> 1) sec^4 x + sec^2 x tan^2 x - 2 tan^4 x = ?
    5·1 answer
  • write in slope intercept form an equation of the line that passes through the points (-15, -1) and (10,4)
    6·1 answer
  • Students in a school are asked to pick either football, rugby or tennis to play in their lessons. the number of students who pic
    5·1 answer
  • Bill mixes candy costing 45cents per pound with candy costing 65cents a pound. A 7-pound box of the mix costs $3.65. How much of
    11·1 answer
  • On Tuesday, the Madison Avenue Hotel had 5 occupied rooms for every 2 unoccupied rooms. If there
    11·1 answer
  • A right triangle has one vertex on the graph of
    15·1 answer
  • The power, P (watts), of a car engine is proportional to the square of its speed, s(m/s) When s= 30 P= 1500 Work out the speed (
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!