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4 years ago

A plumber has a 2.5 meter long copper pipe. He needs to cut lengths of 60cm,35cm and 90cm

1 answer:

8 0

Hello.

The answer is 2315 cm.

To get the answer the equation is: 2500 - (60 +35 +90 )
To get 2500: 2.5 meters is 2500 cms
Then you would subtract how much he needs.

have a nice day

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1/2 = 2m what does m equal

max2010maxim [7]

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4 years ago

The following table gives annual life insurance premiums per $1,000 of face value. Use the table to determine the annual premium

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3 years ago

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What is the length of the side of a right triangle that has a side length of 12in and a hypotenuse that measures 15ft

Viktor [21]

Answer: 14.96ft

Step-by-step explanation:

1. To solve this exercise you must apply the Pythagorean Theorem, which is:

$a=\sqrt{b^{2}+c^{2}}$

Where $a$ is the hypotenuse, and $b$ and $c$ are the other sides of the triangle.

2. You have that the sides given measures 12 inches. 1 feet has 12 inches. Therefore, this side measures 1 feet.

2. Then, when you solve for one of the sides and substitute the values given in the problem into the formula shown above, you obtain that the length of the side of the rigth triangle is:

$b=\sqrt{(15ft)^{2}-(1ft)^{2}}$

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3 years ago

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The more surface area an ice cube has, the more quickly it melts to cool a beverage. mark states that the ideal ice cube would b

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It is true that t<span>he more surface area an ice cube has, the more quickly it melts to cool a beverage. By making the length of the prism shorter by 1 and the height longer by 2, the resulting prism will look like a 2D object floating on the beverage. Thus, it will cool it faster.

The correct answer is: </span>1 by 2 by 4 or 1 x 2 x 4

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4 years ago

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In parallelogram ABCD point K belongs to diagonal

Maksim231197 [3]

Answer:

$\dfrac{BE}{EC}=\dfrac{1}{3}.$

Step-by-step explanation:

Consider triangles BKE and DKA. In this triangles:

$\angle BKE=\angle DKA$ as vertical angles;
$\angle KBE=\angle KDA$ as alternate interior angles (lines BC and AD are parallel and BC is a transversal);
$\angle BEK=\angle DAK$ as alternate interior angles (lines BC and AD are parallel and BE is a transversal).

Thus triangles BKE and DKA are similar by AA theorem. Similar triangles have proportional sides lengths:

$\dfrac{BK}{KD}=\dfrac{BE}{AD}\Rightarrow \dfrac{1}{4}=\dfrac{BE}{AD}.$

Thus, $AD=4BE.$

Since AD=BC and BC=BE+CE, we have that 4BE=BE+EC, EC=3BE. Hence, the ratio BE to EC is

$\dfrac{BE}{EC}=\dfrac{BE}{3BE}=\dfrac{1}{3}.$

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3 years ago