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2 years ago

A bag contains 30 red and blue marbles. If 19 are blue, what fraction of the marbles are blue?

Mathematics

1 answer:

Musya8 [376]2 years ago

5 0

Answer:

19%

Step-by-step explanation:

19/100. i don't think it is that simple, but i did the best i could

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Write the following number in standard form: 3.471 x 10 to the power of negative 3

iogann1982 [59]

Answer:

=-3471 is the answer this may help you.

Step-by-step explanation:

=3.471×10^-3

=3.471×-1000

=-3471

8 0

2 years ago

(3ab+2c)^3 what is the answer

svet-max [94.6K]

Answer:

$=27a^3b^3+54a^2b^2c+36abc^2+8c^3$

Step-by-step explanation:

$(3ab+2c)^3$

$=(3ab+2c)$ × $(3ab+2c)$ ×

$=(3ab+2c)(9a^2b^2+12abc+4c^2)$

$=(3ab)(9a^2b^2)+(3ab)(12abc)+(3ab)(4c^2)+(2c)(9a^2b^2)+(2c)(12abc)+(2c)(4c^2)$

$=27a^3b^3+36a^2b^2c+12abc^2+18a^2b^2c+24abc^2+8c^3$

$=27a^3b^3+54a^2b^2c+36abc^2+8c^3$

<em>hope this helps....</em>

5 0

2 years ago

if one angle in a pair of vertical angles measures 36degrees and the other measures (2n-8)degrees, which is the value of n ? ple

KiRa [710]

Answer:

n = 22

Step-by-step explanation:

Since they are vertical angles they are the same.

Therefore you can put together this equation:

2n - 8 = 36

Add 8 to both sides

2n = 44

Divide by 2

n = 22

8 0

3 years ago

What is the expression of 8 more than a number x

aev [14]

"more" means added to, or addition. So 8 more than 'x' is:

x + 8

8 0

3 years ago

How do u do this find the recipesent of 3/4 plz help and thanks

Mila [183]

To make the reciprocal of a fraction, swap the numerator and denominator.

The reciprocal of 3/4 is 4/3.

_____

To make the reciprocal of an integer, write it as a fraction, then proceed as above. Example: (reciprocal of 2) = (reciprocal of 2/1) is 1/2.

Not surprisingly, the reciprocal of a number x is written 1/x.

8 0

3 years ago