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igomit [66]
3 years ago
11

What is the approximate length of the diagonal of a square with side length of 20 centimeters

Mathematics
2 answers:
zhuklara [117]3 years ago
5 0
Answer:28.28 cm

Explanation:

a² + b² = c²

20² + 20² = c²

c² = 400 + 400

c² = 800

c = √800

c = 28.28 cm
Jet001 [13]3 years ago
4 0
You can either use the Pythagorean theorem or the formula d = a√2.

Pythagorean theorem:

The diagonal is the hypotenuse of the right triangle in the square and the two sides are the legs.

20² + 20² = d²
400 + 400 = d²
800 = d²
√800 = d
28.28 = d

Using the formula:

d = a√2
d = 20√2
d = 28.28

The answer with both the methods is the same.

Hope this helps :)

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Seperate the number 53 into 3 parts so that the second number is 3 less than the first number and the third number is twice the
irga5000 [103]
Hello,

Let a the first, b the second and c the third.
a+b+c=53
b=a/3
c=2a
==>a+a/3+2a=53
==>10a/3=53
==>a=15.9
c=2*a=2*15.9=31.8
b=a/3=15.9/3=5.3

Proof: a+b+c=15.9+5.3+31.8=53

The second number is 5.3
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3 years ago
Find the value of 5 ∙ 23. <br><br> 30<br><br> 40 <br><br> 1,000<br><br> ASAP
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The value of 5 ∙ 23 is 115.

The small dot is typically used as a multiplication symbol. When we multiply these two numbers the result is 115.

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jenyasd209 [6]

90 hazelnuts = 125g

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1 hazelnut = 25/18 grams


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Please help me if you love your mom
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Answer:

10.2 cm²

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regular hexagon made up of six equilateral triangles

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or by the side length

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The graph of a trigonometric function oscillates between y=1 and y=-7. It reaches its
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Answer:

y = 4 sin(½ x) − 3

Step-by-step explanation:

The function is either sine or cosine:

y = A sin(2π/T x) + C

y = A cos(2π/T x) + C

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The midline is the average of the min and max:

C = (1 + -7) / 2

C = -3

The amplitude is half the difference between the min and max:

A = (1 − -7) / 2

A = 4

The maximum is at x = π, and the minimum is at x = 3π.  The difference, 2π, is half the period.  So T = 4π.

Plugging in, the options are:

y = 4 sin(½ x) − 3

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