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Vedmedyk [2.9K]
3 years ago
15

X-2y=0 ,x²-y²=3by step​

Mathematics
1 answer:
masya89 [10]3 years ago
5 0

Answer:

x=2, y=1

x=-2, y = -1

Step-by-step explanation:

x - 2y = 0

x = 2y

x² - y² = 3

(2y)² - y² = 3

3y² = 3

y² = 1

y = 1 or y = - 1

x = 2 or x = -2

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Associative property is a+(b+c)=(a+b)+c

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7 0
3 years ago
8
IrinaVladis [17]

Answer:

49.6

Step-by-step explanation:

A = πr2, (Pi r-squared)

A = (3.14)(8)2

A = (3.14) (64)

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2 years ago
Please assist me with this problem​
iren [92.7K]

Answer:

b. x + 1

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4 0
3 years ago
Keisha bought N packs of pencils. Each pack has 12 pencils. Write an equation to represent the total number of pencils P that Ke
Andrews [41]

Hi!

The equation looks like this:

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6 0
3 years ago
Read 2 more answers
26. Law of sines, please give a step by step explanation
Stels [109]

Answer:

  174.6 ft

Step-by-step explanation:

It can be helpful to draw a diagram of the triangle we're concerned with. (See attached.)

We know the angle at the end of the shadow inside the triangle is 52°-22° = 30°. We assume the tree is growing straight up out of the hillside, so its angle with the hill inside the triangle is 90°+22° = 112°. Then the remaining angle between the shadow and the tree at the top of the tree is ...

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Now, we have the angle opposite the tree, and the angle opposite the known side length of the triangle (215 feet along the hill, AC in the diagram). This is enough information to usefully use the Law of Sines.

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The height of the tree is about 174.6 feet.

5 0
3 years ago
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