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Irina-Kira [14]
3 years ago
7

5miles = 8km. How many km in 80miles?

Mathematics
1 answer:
Zina [86]3 years ago
4 0

Answer:

128

Step-by-step explanation:

Set this up as a proportion with miles on the top and km on the bottom:

\frac{mi}{km}:\frac{5}{8}

If we want to know how many km are in 80 miles, we put the variable with the km stuff on the bottom and 80 on top and cross multiply to solve for the variable:

\frac{mi}{km}:\frac{5}{8}=\frac{80}{x} so

5x = 640 and

x = 128

That means that 80 miles is equivalent to 128 km

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Steve was offered $7,050 per year for
Ivanshal [37]

Answer: Steve gets paid about 33 dollars a week

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4 0
3 years ago
The bottom part of this block is a rectangular prism. The top part is a square pyramid. You want to cover the block entirely wit
Umnica [9.8K]

Answer:

Hence required paper for entire shape will be L[L+2(2H+H1)] Sq.cm

Step-by-step explanation:

Given:

A block with rectangular prism at bottom and square pyramid at top.

To Find:

Paper required to cover whole block

Solution:

We know that block consist of two different shapes as prism and pyramid.

So paper covering will be for surface.

hence we required surface area for rectangular prism and square pyramid.

(Refer the attachment)

Now only outer surface should be consider in order to cover the shape.

for square pyramid its length and breadth will be the same .

let L be length and B be breadth and h be height

<em>So total no.of faces will be 6 but on top there is prism placed so top surface will be neglected for the calculations</em>.

H<em>ence No.of faces will be 5.</em>

So total surface area for square pyramid  will be

=L*W+2(L*H+W*H)

Here L=W as it is square pyramid

=L^2+4(L*H)

Now for the Prism surface it will  have 4 triangles placed on with base as length of pyramid(as shown in fig) and height be H1

So Total area for Prism will be

=4( Area of triangles)

=4*1/2*base*height)

=2*base *height

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So required Paper will be

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3 years ago
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Answer:

No, the ratio between AD and DE is 3:1.

Step-by-step explanation:

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2 years ago
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Which expression is equivalent to n + n - 0.18n?
horrorfan [7]

n + n - 0.18n

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2n - 0.18n

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