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ANTONII [103]
3 years ago
8

A point is located in a polar coordinate system by coordinates r = 2.5 m and Θ = 35°.

Mathematics
1 answer:
Yakvenalex [24]3 years ago
7 0

x=r\cos \theta\\
y=r\sin \theta\\\\
x=2.5\cdot\cos 35\approx2.5\cdot0.82\approx2.1\\
y=2.5\cdot\sin 35\approx2.5\cdot 0.57\approx1.4

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Answer:

Triangle #1 is similar to Triangle #2

Step-by-step explanation:

For two triangles to be similar, they need to be the same shape but not size. These two triangles are the same shape but not size :)

The other answers available also don't match. It cannot be 1 or 2 because they are definitely not true. Answer 3 and 4 don't really make sense.

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4 years ago
Analyze the diagram below and complete the instruction that follow.
monitta

Answer:

x=10

Step-by-step explanation:

The two angles form a straight line so they add to 180 degrees

7x-3 + 12x-7 = 180

Combine like terms

19x-10 = 180

Add 10 to each side

19x-10+10 = 180+10

19x = 190

Divide by 19

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3 0
3 years ago
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Which equation is the inverse of y = 7x2 – 10?
MrRissso [65]

we have

y=7x^{2}-10

To find the inverse

Step 1

Exchanges the variables, x for y and y for x

x=7y^{2}-10

Step 2

Isolate the variable y

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Square Root both sides

y=(+/-)\sqrt{\frac{x+10}{7}}

Step 3

Let

f(x)^{-1}=y

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f(x)^{-1}=(+/-)\sqrt{\frac{x+10}{7}}

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<u>the answer is</u>

The inverse is  

f(x)^{-1}=(+/-)\sqrt{\frac{x+10}{7}}

8 0
3 years ago
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Answer:

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IrinaVladis [17]

Hey there! :)

Answer:

13 packages.

Step-by-step explanation:

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Subtract 7 from 9 to find the width:

9 -7 = 2. Therefore:

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Larger rectangle:

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Add up the two areas to find the area of the entire figure:

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If each package of tile covers 3 ft², simply divide to find the package of tiles needed:

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