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Vinvika [58]
3 years ago
15

1. Uma escada possui comprimento igual a 30m. Sabe-se que ela se encontra encostada em um muro, formando com este um ângulo de 6

0º. Podemos afirmar que a altura da escada, em m. é igual am:
Mathematics
1 answer:
topjm [15]3 years ago
6 0

Answer:

The height of the ladder is 15 meters.

Step-by-step explanation:

To find the height of the ladder, we just need to use the cosine relation of the 60 degrees angle.

The adjacent side to the angle is the height of the ladder, and the hypotenuse of the triangle created is the length of the ladder. So, we have that:

cos(60) = height / length

0.5 = height / 30

height = 30 * 0.5 = 15 meters

The height of the ladder is 15 meters.

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nika2105 [10]

It is given in the question that your computer monitor has a width of 14.98 inches and a height of 11.24 inches.

And we have to find the area of the monitor display in square meters.

And the formula of area is width times height .

SO to find the area, we have to multiply the given width and height.That is

Area= 14.98*11.24 =168.3752 square inches

And now we need to convert square inches to square meters and for that we have to multiply the given answer by 0.00064516. That is

= 168.3752*0.00064516=0.1086 m^2


6 0
3 years ago
HELP 6TH GRADE MATH<br> Enter the phrase as an algebraic expression. The product of 54 and c
Nutka1998 [239]

Answer:

54c

Step-by-step explanation:

The word "product" means that the operation is multiplication. So the two numbers need to be multiplied. In algebra, the way you multiply a constant and a variable is simply by putting the two next to each other with no other symbol.

5 0
3 years ago
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Two houses sit along the southern shore of a lake. The distance between the houses is
Soloha48 [4]

Answer:

150÷48=3hrs and 125minutes

Step-by-step explanation:

speed =distance/time

4 0
2 years ago
Need help fast with this question fourty points and branliest!!
Colt1911 [192]

You can use SAS, or Side Angle Side. Because BC equals EC and AC equals DC, you can get two sides. Also, angle BCA and DCE have the same angle measurement, so you can conclude, using SAS, that BA equals to ED. Also, you can also prove that these two triangles are congruent and that all of the angles are the same as well because all of the side lengths are equal.


8 0
3 years ago
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Which number produces an irrational number when multiplied by 1/3
MArishka [77]

We can simply observe that.

  1. 0.777... is rational, because it is a number with infinite but repeating decimal part.
  2. 1/3 is rational, because it's the division between two integers
  3. -\sqrt{16}=-4, so this is rational as well.

Since the product of two rational numbers is always rational, we have that

0.\bar{7}\cdot \dfrac{1}{3},\quad \dfrac{1}{3}\cdot \dfrac{1}{3},\quad -4\cdot \dfrac{1}{3}

are all rationals, since they are the product of two rationals.

On the other hand, we have

\sqrt{27}=\sqrt{9\cdot 3}=3\sqrt{3}

and thus

3\sqrt{3}\cdot \dfrac{1}{3}=\sqrt{3}

which is irrational.

3 0
3 years ago
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