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3 years ago

Please help me!!!!!!!

Mathematics

1 answer:

dusya [7]3 years ago

5 0

Answer:

544 units²

Step-by-step explanation:

The surface area is the sum of the areas of the three rectangular faces and the two triangular bases.

SA = 10×14 +10×14 +12×14 + 2(1/2)(12)(8)

= 14×(10+10+12) +12×8

= 448 +96

= 544 . . . . square units

_____

The area of a rectangle is the product of its dimensions:

A = LW

The area of a triangle is half the product of its base and height:

A = (1/2)bh

Here, both triangles have the same area, so we multiplied the area of one of them by 2 to get the area of both of them.

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As shown in the question, the translation changes the points as follows:

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Therefore:

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1 year ago

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Answer:

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Step-by-step explanation:

Total ways possible = 104 ways

The figure is attached here for understanding.

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

1. Chris takes 25 minutes to replace one car tyre.

vekshin1

Chris and Jim must replace a <em>total</em> quantity of 17 tyres.

<h3>What is the minimum number of tyres to be replaced?</h3>

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1 year ago

The midpoint of UV is point W. What are the coordinates of point V?

madreJ [45]

Since you don't provide the coordinates of the point W, I will help you in a general form anyway. In the Figure below is represented the segment that matches this problem. We have two endpoints U and V. So, by using the midpoint formula we may solve this problem:

$Midpoint=W=W(\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2})=W(x_{3}, y_{3}) \\ \\ where:\\ \ U=U(x_{1}, y_{1}) \ and \ V=V(x_{2}, y_{2}) \\ \\ and: \\ x_{3}=\frac{x_{1}+x_{2}}{2} \\ y_{3}=\frac{y_{1}+y_{2}}{2}$

Therefore:

$x_{2}=2x_{3}-x_{1} \\ y_{2}=2y_{3}-y_{1}$

So we know $x_{3} \ and \ y_{3}$ but we also must know $x_{1} \ and \ y_{1}$

Finally, knowing the points U and W we can find the endpoint V.

7 0

3 years ago

Read 2 more answers