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Monica [59]
4 years ago
7

A CD is shaped like a circle wit a diameter of 12 cm. to the nearest centimeter what is the circumference of the CD

Mathematics
1 answer:
andre [41]4 years ago
5 0

Answer:

The answer is that the circumference of the CD is 37.7 cm.

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Write an algebraic expression: 4 groups of y.
Dvinal [7]
4y is your answer because ffor is the mathmatical term for multiplying in any word problem. 
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3 years ago
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write the ratio as a fraction in simplest form, with whole numbers in the numerator and denominator. 40 to 56
masha68 [24]

Answer:

  5/7

Step-by-step explanation:

A common factor of 8 can be canceled from numerator and denominator.

  40/56 = (5·8)/(7·8) = (5/7)·(8/8) = (5/7)·1 = 5/7

_____

Since you know your multiplication tables, you know that 40 and 56 are both multiples of 8.

__

If you don't know your multiplication tables, you can find the greatest common divisor (GCD) of the two numbers and divide each by that. The GCD can be found using Euclid's algorithm. For that, you divide the larger by the smaller and use the remainder as the new smaller number. The original smaller number is now the larger number. For these numbers, that looks like ...

  56 ÷ 40 = 1 r 16

  40 ÷ 16 = 2 r 8

  16 ÷ 8 = 2 r 0 . . . . . the zero remainder signals that the divisor (8) is the GCD

Now, your fraction is ...

  (40/8) / (56/8) = 5/7

3 0
3 years ago
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What is the common factors of 20,25,40?
Marina CMI [18]
The common factors for 20 is 1,5
25 is 1,5
40 is 1,5
GCF:5
3 0
3 years ago
A student claims that 8^3 x 8^-5 is greater than 1. Explain whether the student is correct or not.
nlexa [21]
Remember:
a^m * a^n=a^(m+n)
a^-m=1/a^m


8³ x 8⁻⁵=8³⁻⁵=8⁻²=1/8²=1/64<1

Answer: the student is not correct, because 1/64<1, and 8³ x 8⁻⁵=1/64.
7 0
3 years ago
PLEASE HELP!! DUE SOON!!!
vodomira [7]

Answer:

1. If it is just a line and it has no end points then it means that it is a line if it has endpoints then it's a line segnment.

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Step-by-step explanation:

/

4 0
3 years ago
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