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
Zarrin [17]
3 years ago
9

What is the area??!??

Mathematics
1 answer:
pogonyaev3 years ago
6 0

Answer:

142.7 m²

Step-by-step explanation:

but sure, what you know about triangles and trigonometry (simplified, the relationship of angles and sides of shapes based on circles enclosing them)

so, here a quick summary of important facts and angle/side relationships in triangles :

the sum of all angles in a triangle is always and for every triangle 180 degrees.

sin(angle) is vertically up or down from the horizontal diameter of the encircling circle to the point on the circle hit by a line from the center of the circle with the described angle from the horizontal diameter.

cos(angle) is horizontally left or right from the center of the encircling circle to the point, where the sine-line hits the horizontal diameter.

the sides are named in relation to their opposing corners and their angles. so, for example, side a is opposing the corner point A and the angle at this point (also called A).

here it is also important to know :

a/sin(A) = b/sin(B) = c/sin(C)

and the area of a general triangle is

area = 1/2 × b × c × sin(A) or

1/2 × a × c × sin(B) or

1/2 × a × b × sin(C)

so, if we want to use the first option, we need to calculate b first. for this we use

b/sin(B) = c/sin(C)

b = (c × sin(B)) / sin(C)

for this we need to calculate C first. and we use

A + B + C = 180

C = 180 - A - B = 180 - 54.3 - 30.4 = 95.3 degrees

=>

b = (26.3 × sin(30.4)) / sin(95.3) = 13.36583...

=> area = 1/2 × 13.36583... × 26.3 × sin(54.3) = 142.7324...

= 142.7 (rounded)

You might be interested in
Mila is preheating her oven before using it to bake. The initial temperature of the oven is 75° and the temperature will increas
NNADVOKAT [17]
The temp after 15 minutes is 225 degrees because the initial temp plus the rate time the number of minutes gives the current temp. in this case, 75 + 10(15) = 225

therefore, the temp after t minutes can be represented by the equation f(x) = 10t + 75
7 0
2 years ago
HELP!! Which of these linear equations best describes the given model?
viktelen [127]

Option B:

The linear equation that best describes the model is y = 40x + 800.

Solution:

Take two points which exactly on the line.

Let the points are (0, 800) and (10, 1200).

x_1=0, y_1=800, x_2=10, y_2=1200

Slope of the line:

$m=\frac{y_2-y_1}{x_2-x_1}

$m=\frac{1200-800}{10-0}

$m=\frac{400}{10}

m = 40

y-intercept of the line is where the line crosses at y-axis.

y-intercept (b) = 800

Equation of a line:

y = mx + b

y = 40x + 800

The linear equation that best describes the model is y = 40x + 800.

Option B is the correct answer.

4 0
3 years ago
Please help me, and explain
disa [49]

Answer:

x=2.4

Step-by-step explanation

Lets take the info already given. 20 is on the larger triangle and 8 is on the smaller. So the side that matches with X is 6. The relationship between 20 and 8 is 2.5. How? 20/8=2.5. then you divide 6 by 2.5. That equals 2.4. So x=2.4. Hope that helps !

3 0
3 years ago
Read 2 more answers
Emily says she can prove the Pythagorean Theorem using the following diagram. She explains that she can divide the squares on th
irinina [24]

Answer: Yes, It is

Step-by-step explanation:

Demonstrating the Pythagorean Theorem

When you think of each side of a right triangle as also being a side of a square that's attached to the triangle. The area of a square is any given side multiplied by itself. (For example, b x b = b^2).

In order to show that a^2 + b^2 = c^2,

follow these steps:

Get a right triangle on grid paper that you can print. You'll also need scissors, and a ruler.

Cut out the triangle.

Make three squares with sides that are equal to each side of the triangle. Begin with side

a. Measure the length of side a. On the blank piece of grid paper,

- draw a square with sides that are the same length as side a.

- Label this square a2.

- Repeat these steps to create squares for sides b and c. (If you don't have a ruler, just use the triangle as a guide; trace the length of one side, and then draw three more sides of the same length to make a square.)

Cut out the squares. Place each square next to the corresponding sides of the triangle.

Now show that a2 + b2 = c2. Place the squares made from sides a and b on top of square c. You will have to cut one of the squares to get a perfect fit.

Area of Whole Square

The total area of a big square, where each side having a length of a+b, is:

A = (a+b)(a+b)

Area of The Pieces

By adding up the areas of all the smaller pieces:

First, the smaller (tilted) square has an area of:c^2

Each of the four triangles has an area of: ab^2

So all four of them together is: 4ab^2 = 2ab

Adding up the tilted square and the 4 triangles gives: A = c^2 + 2ab

Both Areas Must Be Equal

The area of the large square is equal to the area of the tilted square and the 4 triangles. This can be written as:

(a+b)(a+b) = c^2 + 2ab

By rearrange this, we shall see if we can get the pythagoras theorem:

Start with:(a+b)(a+b) = c^2 + 2ab

Expand (a+b)(a+b): ag2 + 2ab + b^2 = c^2 + 2ab

Subtract "2ab" from both sides: a^2 + b^2 = c^2

Therefore, it's been proven that, a^2 + b^2 = C^2

5 0
3 years ago
For some value of z, the value of the cumulative standardized normal distribution is 0.8340. the value of z is
Aleksandr-060686 [28]

For some value of z, the value of the cumulative standardized normal distribution is 0.8340. the value of z is

Answer: We are required to find the value of z corresponding to probability 0.8340.

i.e., P(Z

We can find the value of z using the standard normal table.

Using the standard normal table, we have:

z(0.8340)=0.97

Therefore, for the value of z = 0.97, cumulative standardized normal distribution is 0.8340

Attached here standard normal table for your reference.



6 0
3 years ago
Other questions:
  • The table shows the outputs y for different inputs x:
    6·1 answer
  • What is the quotient (3x2 + 4x − 15) ÷ (x + 3)? (1 point)
    11·1 answer
  • Your school raised 125% of its fundraising goal. The school raised $6750. What was the goal?
    14·2 answers
  • A professor has given the same exam to every Stats class for the last 30 years (during which thousands of students have taken th
    15·2 answers
  • Shley solved the exponential equation 3x+1 = 15 and her work is shown below. what is the first step she did incorrectly? step 1:
    14·1 answer
  • What are the zeros of the quadratic function?<br><br> f(x)=4x2−100
    6·1 answer
  • If <img src="https://tex.z-dn.net/?f=f%28x%29%20%3D%20x%5E%7B2%7D%20%2B%203x%20%2B%205" id="TexFormula1" title="f(x) = x^{2} + 3
    12·2 answers
  • Please solve it fastand give the correct answer pleaseeeeee​
    13·1 answer
  • A tablespoon is equivalent to about 4 teaspoons. A recipe calls for 2/3 cup of sugar for every 1/2 teaspoon vanilla. What is the
    12·1 answer
  • Plisss help write the linear equation that vives the rule for this table ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!