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elixir [45]
3 years ago
9

There are 7 similarly shaped figures in a set. The largest figure is 7 inches tall. Each of the other figures is 1 inch shorter

than the next larger figure. The surface area of the largest figure is 588 in.22. What is the surface area of the smallest figure?
Mathematics
2 answers:
andrew-mc [135]3 years ago
7 0
From the statement given above, it can be deduced that the measure of the side of the figure is equal to 1 inch. Thus, the scale factor is 1:7. The ratio of their area should be 1:49. To get the area of the smallest figure, we simply divide the given area of the largest figure by 49, giving us the answer which is equal to 12 in². 
8090 [49]3 years ago
6 0

Answer:

12

Step-by-step explanation:

take the 7 and times it by 1.7

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alexandr1967 [171]

the answer is c.

you have to multiply by -3 on both sides to get c on its own.

therefore, c is greater than or equal to -9.

in a, c is less than or equal to 9 so thats not the answer.

In b, c is greater than or equal to 9 but it has to be -9.

in d, c is less than or equal to -9.

the answer is c

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2 years ago
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Karolina [17]

Answer:


Step-by-step explanation:

Firstly, note that -2i really is just z = 0 + (-2)i, so we see that Re(z) = 0 and Im(z) = -2.

When we're going from Cartesian to polar coordinates, we need to be aware of a few things! With Cartesian coordinates, we are dealing explicitly with x = blah and y = blah. With polar coordinates, we are looking at the same plane but with angle and magnitude in consideration.

Graphing z = -2i on the Argand diagram will look like a segment of the y axis. So we ask ourselves "What angle does this make with the positive x axis? One answer you could ask yourself is -90°! But at the same time, it's 270°! Why do you think this is the case?

What about the magnitude? How far is "-2i" stretched from the typical "i". And the answer is -2! Well... really it gets stretched by a factor of 2 but in the negative direction!

Putting all of this together gives us:

z = |mag|*(cos(angle) + isin(angle))

= 2*cos(270°) + isin(270°)).

To verify, let's consider what cos(270°) and sin(270°) are.

If you graph cos(x) and look at 270°, you get 0.

If you graph sin(x) and look at 270°, you get -1.

So 2*(cos(270°) + isin(270°)) = 2(0 + -1*i) = -2i as expected.

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3 years ago
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babymother [125]

Answer:

16

Step-by-step explanation:

do the parentheses first to get 4

8/2 x 4

4 x 4

16

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<span>Y DO I W? (Why do I double you?)
That's the answer. </span>
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skelet666 [1.2K]
A= l*w
168= 14*w

Divide both sides by 14
168/14= 14w/14
12=w

Final answer: 12 ft (I'm not sure if you meant to switch the order of b and c).
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3 years ago
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