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TiliK225 [7]
2 years ago
6

A ladder is leaning against a building. The

Mathematics
1 answer:
arlik [135]2 years ago
3 0

Answer:α

=

71

°

:

explain:

From trigonometry we have:

cos

α

=

7

21

7

=

21

cos

(

α

)

and:

α

=

a

r

c

cos

(

7

21

)

=

70.5

≈

71

∘

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Qaudriladrial ABCD had cordinates A (3, 5) B(5, 2) C(8, 4) D(6, 7) qaudriladrial ABCD is a what?
Lorico [155]

The quadrilateral is a square

<h3>What are quadrilaterals?</h3>

Quadrilaterals are polygons, that have four sides and four corners

The coordinates are given as:

  • A = (3, 5)
  • B = (5, 2)
  • C = (8, 4)
  • D = (6, 7)

Start by calculating the adjacent side lengths using:

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

So, we have:

AB = \sqrt{(3- 5)^2 + (5- 2)^2}

AB = \sqrt{13}

BC = \sqrt{(8- 5)^2 + (4- 2)^2}

BC = \sqrt{13}

The side lengths are equal.

Hence, the quadrilateral is a square

Read more about quadrilaterals at:

brainly.com/question/5715879

8 0
2 years ago
The length of the freeway is 600 miles. If 0.5 inch represents 50 miles, what is the length of the freeway on the map ?
SOVA2 [1]
How many 50 miles are in 600 miles :
600 miles / 50 miles = 12
There are 12 slices of 50 miles in 600 miles.

1 slice of 50 miles equals 0.5 inch
(1 slice × 0.5 inch = 0.5 inch)
so
12 slices of 50 miles equals 6 inches
(12 slices × 0.5 inch = 6 inches)

The lenght of the freeway on the map is 6 inches.







5 0
3 years ago
Which equation has a constant of proportionality equal to 3?
krek1111 [17]

Answer:

Step-by-step explanation:

y = 3x is an example of such an equation.

6 0
3 years ago
Read 2 more answers
What is the answer to this question? The difference of x and 22 is equal to 8
alexandr402 [8]

Answer:

<em>If </em><em>the </em><em>difference</em><em> </em><em>of </em><em>x </em><em>and </em><em>2</em><em>2</em><em>=</em><em>8</em>

<em>then </em><em>equation</em><em> is</em><em> </em>

<em>X </em><em>-</em><em>2</em><em>2</em><em>=</em><em>8</em>

<em>X=</em><em>2</em><em>2</em><em>+</em><em>8</em>

<em>X=</em><em>3</em><em>0</em>

<em>therefore</em><em> </em><em>now </em><em>we </em><em>put </em><em>the </em><em>value</em><em> of</em><em> x</em><em> in</em><em> the</em><em> </em><em>equation</em>

<em>3</em><em>0</em><em>-</em><em>2</em><em>2</em><em>=</em><em>8</em>

<em>8</em><em>=</em><em>8</em>

3 0
2 years ago
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One third of the opposite of a number is less than 12
faltersainse [42]
Would it be 6 because if it is third half it

8 0
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