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
Varvara68 [4.7K]
3 years ago
13

ANSWER IN THE COMMENTS SECTION

Mathematics
2 answers:
ryzh [129]3 years ago
6 0

Answer:

B.

Step-by-step explanation:

sergeinik [125]3 years ago
5 0
I’m not sure if this is right but i also think it’s B
You might be interested in
The outer and inner triangles are both equilateral and the circle touches all three sides of the outer triangle. If the area of
Brrunno [24]

Answer:

The area of outer Δ = 40 cm²

Step-by-step explanation:

∵ Area of the small triangle = 10 cm²

If we join the center of the circle with the 3 vertices of the inner Δ

These 3 segments are the radii of the circle

Now the inner triangle has 3 isosceles Δ their sides are r , r and s1 with vertex angle 120° ⇒ (360° ÷ 3 = 120°)

Where r is the radius of the circle and s1 is the side of the inner triangle

<em>By using cosine rule</em>

(s1)² = r² + r² - 2r²cos120 = r² + r² - 2r² (-0.5) = r² + r² + r² = 3r²

∴ s1 = r√3

∵ The radius of the circle ⊥ to the side of the outer Δ because the side of the outer Δ is a tangent to the circle

If we join a vertex of the outer Δ with the center of the circle

We will have a right angle triangle of two legs r and half s2 with angle 60° (120° ÷ 2 )between them ⇒ s2 is the side of outer Δ

∴ tan 60° = 1/2 (s2) ÷ r ⇒ √3 = 1/2 (s2) ÷ r = (s2)/2r

∴ s2 = 2r√3

∴ s2 : s1 = 2r√3 ÷ r√3 = 2 : 1

∴ The side of the outer Δ is double the side of the inner Δ

<em>By using similarity ratio</em>

A2/A1 = (s2/s1)² ⇒ A2 and A1 are the areas of outer and inner triangles

∴ A2 : A1 = (2/1)² = 4/1  

∴ A2 = 4 A1

∴ A2 = 4 × 10 = 40 cm²

5 0
3 years ago
-2.25-(-3.9) show your work I WILL DO BRAIN LIST 15 POINTS
Elden [556K]

Answer:

The answer is 1.65

Step-by-step explanation:

−2.25−(−3.9)

=−2.25−(−3.9)

=−2.25+3.9

=1.65

7 0
3 years ago
Can u solve this problem in show your work
aksik [14]

Hey there!

We can solve this problem by doing PEMDAS, which lists:

Parentheses \\ Exponents \\ Multiplication \\  Division \\ Addition \\ Subtraction

We have in this equation

Parentheses \\ Exponents \\ Dvision

Let's sp;ve this equation now!

Parentheses ↓

(6 -3) = 3

Exponents ↓

3^2  = 9

Division ↓

\frac{36}{9}  = 9

Okay now , I show you the steps so it can be easier to solve!

\frac{36}{(6-3)^2} \\ \\  6-3 = 3 \\   \\ \frac{36}{3^2}  \\ \\ 3^2 = 9   \\  \\ \frac{36}{9} \\ \\ \\ \\ Answer: 4

Good luck on your assignment and enjoy your day!

~LoveYourselfFirst:)

5 0
3 years ago
Read 2 more answers
Evaluate |bc|, given a = 5, b = -3, and c = -2.
Anni [7]

Answer:

6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • |Absolute Value| - makes any number positive

Step-by-step explanation:

<u>Step 1: Define</u>

|bc|

a = 5

b = -3

c = -2

<u>Step 2: Evaluate</u>

  1. Substitute:                    |-3 · -2|
  2. Multiply:                        |6|
  3. Evaluate:                       6
7 0
2 years ago
What is a fraction of 0.25
skad [1K]
Well If your trying to turn it into a decimal the answer would be .25 but if you want it as a fraction the answer is 100 over 25. Hope I helped!

-Amber
7 0
3 years ago
Read 2 more answers
Other questions:
  • 4. For f(x) = 1/x-5
    13·1 answer
  • How many square feet of tile is needed for a 24 foot x 24 foot room?
    6·1 answer
  • Which expression shows the result of applying the distributive property to 1/4(−3n+3/2) ?
    11·1 answer
  • Explain whyyy????????
    9·2 answers
  • The theoretical probability of an event occurring is 2/5 Which best describes the experimental probability associated with this
    13·2 answers
  • Solve for y. 8x+6y=10. Please show steps
    13·2 answers
  • Tell whether the sequence , , , . . . is arithmetic, geometric, or neither. Find the next three terms of the sequence. A. neithe
    6·1 answer
  • 3(14-5)<br> using distributive property
    13·2 answers
  • Mamie saved $161.25. this is 25% of the amount she needs to save how mutch money does she need to save
    10·1 answer
  • Find m angle XZW. WZWX is a rectangle.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!