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
bekas [8.4K]
3 years ago
14

In the diagram, PQR is a equilateral triangle. Given that QT=TR, find the length, in cm, of PT, correct to 2 decimal places.

Mathematics
1 answer:
Zanzabum3 years ago
4 0
The length of RT=12÷2=6cm

the length of PT
6^2+PT^2=12^2
PT=√108
PT=10.392 decimal places

You might be interested in
What is the area of the combined rectangle
Art [367]

Answer:Find The area of each rectangle is base × height.

Step-by-step explanation: Find the area of each rectangle by multiplying its base by its height. Add the areas of the rectangles together to get the total area. We split this composite shape into 2 rectangles.

3 0
2 years ago
X2 - 7x + 9 =0 please leave answer in surf form and simplify ​
777dan777 [17]

Answer:

x = \frac{7}{2} ± \frac{\sqrt{13} }{2}

Step-by-step explanation:

Given

x² - 7x + 9 = 0 ( subtract 9 from both sides )

x² - 7x = - 9

Solve using the method of completing the square

add ( half the coefficient of the x- term)² to both sides

x² + 2( - \frac{7}{2} )x + \frac{49}{4} = - 9 +

(x - \frac{7}{2} )² = \frac{13}{4} ( take the square root of both sides )

x - \frac{7}{2} = ± \sqrt{\frac{13}{4} } = ± \frac{\sqrt{13} }{2} ( add

x = \frac{7}{2} ± \frac{\sqrt{13} }{2} = \frac{7+/-\sqrt{13} }{2}

4 0
3 years ago
Read 2 more answers
Who can give me this answer
-BARSIC- [3]
The believe the answer is 3/5
3 0
3 years ago
The equation P = 21 + 2w can be used to find the perimeter of a rectangle. A 1 point rectangular shaped playground is enclosed b
nalin [4]

Answer:

  • 130 m

Step-by-step explanation:

<u>Given:</u>

  • P = 2l + 2w
  • P = 500 m

<u>Length is:</u>

  • l = 120 m

<u>Substitute values and solve for w:</u>

  • 500 = 2*120 + 2w
  • 2w = 500 - 240
  • 2w = 260
  • w = 260/2
  • w = 130 m
5 0
3 years ago
If d(x) = x2 - 7x - 7, find d(x - 1).​
satela [25.4K]

Answer: x^2-9x+1

Step-by-step explanation:

x^2-7x-7 d(x-1)

(you would just replace x to (x-1)

(x-1)^2-7(x-1)-7

(solve by square rooting (x-1)(x-1) then foil)

x^2-9x+1

7 0
3 years ago
Other questions:
  • Need help asappp thank you
    9·1 answer
  • Solve D=RT for D, if T=5hours and R=65mph
    15·1 answer
  • I need help . Top left corner
    8·1 answer
  • If two zeroes of a polynomial x3+5x2+7x+3 are -1 and-3 then find the third Zero
    6·1 answer
  • What value of c make polynamial below a prefect square ? x^2+10x+c <br> C=
    5·1 answer
  • How many one third cubes are needed to fill the gap in the prism shown below? O 4
    12·1 answer
  • Can u help me plz??????
    13·1 answer
  • I need help with this as well ty lol
    6·2 answers
  • Help pls some one pls​
    8·1 answer
  • Given P(A) = 0.46, P(B) = 0.35 and P(B|A) = 0.45, find the value of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!