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vfiekz [6]
3 years ago
5

Are rational numbers a subset of real numbers?

Mathematics
2 answers:
valentinak56 [21]3 years ago
7 0

Answer: Yep! This is true.

Explanation: Real number subsets also include irrational numbers, whole numbers, integers, and natural numbers.

blagie [28]3 years ago
7 0

Answer:

Step-by-step explanation:

Yes!

A rational number is one that can be formed by a fraction. Real numbers include them along with the irrational numbers. The only kind of number that is not included is the complex number system - sqrt(-1) is one example.

Rational numbers: 4/5, 22/55, -56/44,3/1

Irrational numbers: still real sqrt(44),

Real numbers: both those listed above.

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When the angle of elevation of the sun is 78 degrees, a tree casts a 13 foot shadow. How tall is the tree?
oksian1 [2.3K]

Answer: 61.16 ft

Step-by-step explanation:

We can think in this situation as a triangle rectangle.

where:

The height of the tree is one cathetus

The shadow of the tree is the other cathetus.

We know that the angle of elevation of the sun is 78°, an angle of elevation is measured from the ground, then the adjacent cathetus to this angle is the shadow of the tree. And the opposite cathetus will be the height of the tree.

Now we can remember the relationship:

Tg(A) = (opposite cathetus)/(adjacent cathetus)

Where:

A = 78°

Adjacent cathetus = 13ft

opposite cathetus = height of the tree = H

Then we have the equation:

Tg(78°) = H/13ft

Tg(78°)*13ft = H = 61.16 ft

4 0
3 years ago
Need help with numbers 1,2&3 pls asap
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5 0
3 years ago
2x + y = 8 x + y = 4 The lines whose equations are given intersect at
aalyn [17]

The lines whose equations are given intersect at. (4, 0)

7 0
3 years ago
Can someone help me please
Romashka-Z-Leto [24]

Answer:

A) At least 1 Right angle

Step-by-step explanation:

As you can seel all the shapes here have atleast 1 right angle, but all the shapes don't have all the things that the other answer choices are saying.

So hence, your answer is A) At least 1 Right Angle

Thanks!

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6 0
2 years ago
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Answer:

angle afb

Step-by-step explanation:

3 0
3 years ago
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