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Nitella [24]
3 years ago
15

Calculate the perimeter of the parallelogram below. (Perimeter is the sum of the sides.)

Mathematics
1 answer:
Umnica [9.8K]3 years ago
3 0

Answer:

c

Step-by-step explanation:

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Se quiere construir un muro de 4 m de alto, 12 m de largo y 10 cm de espesor. ¿Cuántos ladrillos de 8 cm de alto, 20 cm de largo
Llana [10]

Answer:

3000

Step-by-step explanation:

Let's start by finding the volume of the wall. The volumen of the wall can be considered as the volume of a rectangular prism. The volume of a rectangular prism is given by:

V_w=w*l*h\\\\Where:\\\\w=Width=10cm=0.1m\\l=Length=12m\\h=Height=4m

So the volume of the wall is:

V_w=0.1*12*4=4.8m^3

Now, we can find the volume of the brick using the same method since a brick can be considered as a rectangular prism as well:

V_b=w*l*h\\\\For\hspace{3}the\hspace{3}brick\\\\w=10cm=0.1m\\l=20cm=0.2m\\h=8cm=0.08m

Hence:

V_b=(0.1)*(0.2)*(0.08)=0.0016m^3

In order to know how many bricks are required to build the wall, we just need to fill the wall volume with the number of bricks of this volume. So:

V_w=nV_b\\\\Where\\\\n=Number\hspace{3}of\hspace{3}bricks

Solving for n:

n=\frac{V_w}{V_b} =\frac{4.8}{0.0016} =3000

Therefore, we need 3000 bricks to build that wall.

Translation:

Comencemos por encontrar el volumen del muro. El volumen del muro puede considerarse como el volumen de un prisma rectangular. El volumen de un prisma rectangular viene dado por:

V_w=w*l*h\\\\Donde:\\\\w=Espesor=10cm=0.1m\\l=Largo=12m\\h=Alto=4m

Entonces el volumen del muro es:

V_w=0.1*12*4=4.8m^3

Ahora, podemos encontrar el volumen del ladrillo utilizando el mismo método, ya que un ladrillo también puede considerarse como un prisma rectangular:

V_b=w*l*h\\\\Para\hspace{3}el\hspace{3}ladrillo\\\\w=10cm=0.1m\\l=20cm=0.2m\\h=8cm=0.08m

Por lo tanto:

V_b=(0.1)*(0.2)*(0.08)=0.0016m^3

Para saber cuántos ladrillos se requieren para construir el muro, solo necesitamos llenar el volumen del muro con la cantidad de ladrillos de este volumen. Entonces:

V_w=nV_b\\\\Donde\\\\n=Numero\hspace{3}de\hspace{3}ladrillos

Resolviendo para n:

n=\frac{V_w}{V_b} =\frac{4.8}{0.0016} =3000

Por lo tanto, necesitamos 3000 ladrillos para construir ese muro.

4 0
3 years ago
What is the first term in a geometric sequence if the common ratio is −2 and the sum of the first five terms is 77?
kirza4 [7]
Answer is a1 = 7

Using equation (derived from formula to find sum of values in a geometric series),
77 \:  =  \frac{a(1 - (  { - 2}^{5}))}{1 - ( - 2)}
Hence, solve for a.
5 0
3 years ago
Which fraction is the largest?
Diano4ka-milaya [45]

Answer:

5/6

Step-by-step explanation:

1/3 has two more thirds until it's a whole

17/20 has three more twentieths until it's a whole

1/4 has four more fourths until it's a whole

5/6 has <u>one</u> more sixth until it's a whole

8 0
3 years ago
I HAVE NOTHING TO SAY
guapka [62]

Answer:

Lenght - Width

2 - 4

3 - 6

5 - 10

7 - 14

Step-by-step explanation:

Because we have 5 and 10, we know that width is lenght multiple by 2, and lenght is width divided by 2.

3 0
2 years ago
Read 2 more answers
What is the area of the obtuse triangle given below? ​
Marta_Voda [28]

Answer:

D. 38.5 sq. units

Step-by-step explanation:

The formula for the area of a triangle is A=bh(1/2)

So to solve, first multiply the base, by the height: 11*7=77

Then, multiply by 1/2 or divide by 2.

You get 38.5

That's your answer!

Hope this helps!

5 0
2 years ago
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