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Alexus [3.1K]
2 years ago
11

Estimate the value of √15 to the nearest tenth.

Mathematics
2 answers:
Marianna [84]2 years ago
5 0

Answer: 3.9 Hope this helps, please consider making me Brainliest.

Step-by-step explanation:

We can use our knowledge of perfect square (roots). The perfect square roots are 1, 4, 9, 16, 25, etc. The closest one that sqrt15 is near to is 16. The sqrt of 16 is 4, so if 15 + 1 = 16, the correct answer is 3.9. Hope this helps, please consider making me Brainliest.

Nadya [2.5K]2 years ago
3 0

Answer:

3.9

Step-by-step explanation:

√15 = 3.9, rounded.

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Use the properties of 30-60-90 and 45-45-90 triangles to solve for x in each of the problems below. Then decode the secret messa
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The trigonometric function gives the ratio of different sides of a right-angle triangle. The given problems can be solved as given below.

<h3>What are Trigonometric functions?</h3>

The trigonometric function gives the ratio of different sides of a right-angle triangle.

\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}\\\\\\Cosec \theta=\dfrac{Hypotenuse}{Perpendicular}\\\\\\Sec \theta=\dfrac{Hypotenuse}{Base}\\\\\\Cot \theta=\dfrac{Base}{Perpendicular}\\\\\\

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1st.) x = 5 /Sin(30°)

x = 10

!) sin(45°) = 4/x

x = 4/sin(45°)

x = 4√2

I) Cos(45°) = √3 / x

x = √3 / Cos(45°)

x = √6

E) Tan(60°) = 3√3 / x

x = 3√3 / 3

W) For isosceles right-triangle, the angle made by the legs and the hypotenuse is always 45°.

x = 45°

N) x² + x² = (7√2)²

x = 7

V) Tan(60°) = 7 / x

x = 7√3/3

K) x² + x² = (9)²

x = 9/√2

Y) Sin(60°) = 7√3/x

x = 14

M) Sin(30°) = x/11

x = 11/2

T) Sin(45°) = x/√10

x = √5

A) x + 2x + 90° = 180°

x = 30°

O) Sin(45°) = √2 / x

x = 2

R) Tan(30°) = x / 4

x = 4/√3 = 4√3 / 3

S) Sin(60°) = x / (10/3)

x = 5√3 / 3

Learn more about Trigonometric functions:

brainly.com/question/6904750

#SPJ1

8 0
2 years ago
If Y is between X and Z, then X, Y, and Z are collinear?
gtnhenbr [62]
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(05.03 MC)
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Answer:

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Step-by-step explanation:

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Which of the following is always true of the vertical angles formed by
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Answer:

A

Step-by-step explanation:

This is because vertical angles are always congruent, they cross diagonally which makes them equal to each other.

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