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
Lynna [10]
2 years ago
12

Rounded to the nearest tenth, what is the perimeter of rectangle ABCD?

Mathematics
1 answer:
kvv77 [185]2 years ago
7 0
  • <em>Answer:</em>

<em>54.6 cm</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>T30° => AD = AC/2 = 20cm/2 = 10 cm</em>

<em>T.Phytagoras</em>

<em>CD = √AC² - AD² </em>

<em>= √20² - 10²</em>

<em>= √400-100</em>

<em>= √300</em>

<em>= 10√3</em>

<em>= 10×1.73</em>

<em>= 17.3 cm</em>

<em>P = 2AD + 2CD</em>

<em>= 2×10cm + 2×17.3cm</em>

<em>= 20cm + 34.6cm</em>

<em>= 54.6 cm</em>

<em>Good luck ! </em>

You might be interested in
The graph below shows the distance d you run, in miles, as a function of time t, in minutes, during a 5-mile run. Your friend sa
notka56 [123]
The correct answer for this question is this one:

"Y<span>our friend says that the graph is not continuous because it stops at d = 5, so the graph is discrete." Your friend is wrong. The graph is still continuous because the graph shows continuity. The problem only shows the graph at certain t time. This means that the graph can be extended at any t time.</span>
4 0
3 years ago
Tangent line i think please help me find x
Alex

Answer:

x= 6.5 cm

Step-by-step explanation:

When a tangent line touches the circle, it forms a right angle triangle at that point

Apply the Pythagorean relationship in this case

Given that the height is = 20.2 cm = b

The hypotenuse is = c= x+14.7 cm

General formulae is;

a² +b² =c²

x² + 20.2² =( x+ 14.7)²

x² + 408.04= x² +14.7x+14.7x+216.09

x² + 408.04= x² + 29.4 x +216.09.........................collect like terms

x²-x² + 408.04-216.09= 29.4x

191.95= 29.4x-------------------------------divide by 29.4 t0 get x

191.95/29.4 =x

x=6.5 cm

6 0
3 years ago
Which function has a domain of all real numbers?
Aliun [14]

Answer:

D

Step-by-step explanation:

( {2 x})^{ \frac{1}{3} }  - 7 =  \sqrt[3]{2x}  - 7

8 0
1 year ago
#4.... i have no idea what to do for this
Stells [14]
<span>Perpendicular bisector is a<span> line which cuts a line segment into two equal parts at 90°  </span>⇒ 
MN ⊥ BC
BM = CM</span>

6 0
3 years ago
Find the area of the last part. ?)<br> 3<br> 2<br> 1/2<br> 1/3<br> 2/3<br> 3/2
nika2105 [10]
<h2>Question:</h2>

A rectangle measures 3 1/3 inches by 2 1/2 inches what is its area ? Find the area of the last part .

<h2>Solution:</h2>

we know that the area of a rectangle is the product of it's dimensions

so, the area of the given rectangle would be

so ,the measure of the last part would be

\frac{1}{3}  \times \frac{1}{2}  \\  = \frac{1}{6}

3 0
2 years ago
Other questions:
  • A 6000-seat theater has tickets for sale at $28 and $40. How many tickets should be sold at each price for a sellout show to gen
    9·1 answer
  • A dog pen 10 ft by 30 ft is needed. You need to decide how much fence is needed. What concept is used to solve the problem?
    13·1 answer
  • 100 POINTS please answer! ill give you brainliest but i rlly need help! (the circled ones!)
    7·2 answers
  • Hi can anyone help me with these 3 questions would really appreciate it thanks
    5·2 answers
  • Find the solution for -9y+4&lt;-7y-2
    13·2 answers
  • Can I use this for my homework for science because am a little girl trying to get an A+ I hope you understand cuz I want a free
    12·1 answer
  • (f o g )(x) = (2x-3)/(x+4) ; x ≠ - 4 , and g(x) = 1 – x , so F(x) =
    9·1 answer
  • Multiply. x + 4x + 2 2x2 + 3x – 4​
    14·1 answer
  • "13 more than the product of 4 and a number, n
    8·2 answers
  • Plzzzzzzzzzzz<br> Identify the postulate for each drawing
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!