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3 years ago

The undefined terms line and place are needed to precisely define which mathematical term

1 answer:

4 0

The definition of parallel lines requires the undefined terms line and plane, while the definition of perpendicular lines requires the undefined terms of line and point.

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What percent of 390 is 39?

Brums [2.3K]

I believe 10% because 390 and 39 are exactly the same numbers almost

5 0

3 years ago

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The sum of the lengths of two opposite sides of the circumscribed quadrilateral is 10 cm, and its area is 12 cm2. Find the radiu

PtichkaEL [24]

Answer:

1.2 cm

Step-by-step explanation:

The area of sircumscribed quadrilateral over a circle is equal to

$A=s\cdot r,$

where s is semi-perimeter of the quadrilateral and r is the radius of the circle.

Use property of circumscribed quadrilateral: The sums of the opposite sides are equal.

So, if the sum of two opposite sides of the circumscribed quadrilateral is 10 cm, then the sum of another two sides is also 10 cm and the perimeter of the quadrilateral is 20 cm. Hence,

$s=\dfrac{20}{2}=10\ cm$

Now,

$A=s\cdot r\\ \\12=10r\\ \\r=\dfrac{12}{10}=1.2\ cm$

8 0

3 years ago

2/5 +3/10= simplest form

NNADVOKAT [17]

Add those together is 7/10

3 0

3 years ago

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Maya has 9 books 1/3 of her books are fairy tales how many of Mayas books are fairy tales

posledela

Answer:

Step-by-step explanation:

1/3 of 9 is 3

you would figure this out by dividing the total amount of books by the denominator of the fraction.

9/3=3

8 0

3 years ago

Find all solutions to the equation: cos x = sin x

quester [9]

Divide both sides by cos[x]

You get 1 = Tan[x] 

Tan[x] = 1 where x = 45 degrees {+ integer multiples of 180 degrees due to periodicity of tan} 

x = 45 + 180*k OR Pi/4 + kPi, for k any integer

7 0

3 years ago

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