3 years ago

Write 90:27:90 in its simplest form

Mathematics

2 answers:

posledela3 years ago

8 0

Answer:

The simplest form of 2790 is 310.

zlopas [31]3 years ago

5 0

Answer:

I think its 3 and 1/3

Step-by-step explanation:

you welcome

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Two best friends are in a small class together which has 9 students in attendance. if the students are randomly assigned into tw

castortr0y [4]

The probability would be 1:9

6 0

4 years ago

In a group of 120 pupils , 80 can play drums and 25 play piano . How many pupils can play both instruments if there are 3 pupils

soldier1979 [14.2K]

Answer:

12 pupils

Step-by-step explanation:

<u>Number of pupils can play either instrument:</u>

120 - 3 = 117

<u>Number of those can play both:</u>

117 - (80 + 25) = 12

3 0

3 years ago

PLEASE HELP ME I BEG

Kay [80]

Answer:

see explanation

Step-by-step explanation:

Using the trigonometric identity

• 1 + cot²x = csc²x

Consider the left side

$csc^{4}$ x - $cot^{4}$ x

Factorise as a difference of squares

= (csc²x - cot²x)(csc²x + cot²x)

= (1 + cot²x - cot²x)(csc²x + cot²x)

= csc²x + cot²x

= csc²x + csc²x - 1

= 2csc²x - 1 = right side ⇒ verified

8 0

4 years ago

HELP FAST FAST FAST

Rus_ich [418]

Answer:

h=3in

Step-by-step explanation:

A=a+b

Solving forh

h=2A

a+b=2·13.5

3+6=3in

3 0

3 years ago

A bike store rents bikes for $9 an hour in addition to a helmet rental fee of $15. If

wel

Answer:

4 hours

Step-by-step explanation:

First we need to subtract the one pay fee (the helmet rental fee, $15)

So 51 - 15 = 36

Then we need to divide 36 by the amount of money it costs for each hours to find how many hours he rented the bike

So 39/9 = 4

3 0

2 years ago