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3 years ago

The sum of three numbers is 27 the second number is three times the first while the third is twice the first find their average

Mathematics

1 answer:

Leviafan [203]3 years ago

6 0

Answer:

Step-by-step explanation:

x = first number

3x = second number

2x = third number

27 = x + 3x+ 2x

27 = 6x

x=4.5 (first number)

3(4.5) = 13.5 (second number)

2(4.5) = 9 (third number)

(4.5 + 13.5 + 9) /3 = 9

Wow after doing all that I realized that all you had to do was 27/3 since there's 3 numbers.

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Can someone help me with this?

tatiyna

Yes because PROPORTIONAL means the lines start on the axis which is the zero and it also has to be in a even line so yes it is proportional

6 0

3 years ago

Judy is playing a card game. She needs to select two cards below that have a sum greater

Zielflug [23.3K]

Answer:

$2\frac{2}{5} + 2\frac{5}{8} \simeq 5$

$2\frac{2}{7} + 2\frac{5}{8} \simeq 5$

Step-by-step explanation:

Mixed fraction $a\frac{b}{c}$ can be converted into like or unlike fractions.

Here, $a\frac{b}{c} = \frac{ac +b}{b}$

So, convert all the given fractions as follows:

$2\frac{2}{5} = \frac{2(5) +2}{5} = \frac{12}{5} =2.4$

$2\frac{2}{7} = \frac{2(7) +2}{7} = \frac{16}{7} =2.4$

$1\frac{7}{8} = \frac{1(8) +7}{8} = \frac{15}{8} =1.8$

$2\frac{1}{10} = \frac{2(10) + 1}{10} = \frac{21}{10} =2.1$

$2\frac{5}{8} = \frac{2(8) +5}{8} = \frac{21}{8} =2.6$

Here, No Two fractions on addition gives a sum greater than 5.

But an approximate sum of 5 is given by adding 2.4 + 2.6 = 5

⇒ $2\frac{2}{5} + 2\frac{5}{8} \simeq 5$

or ⇒ $2\frac{2}{7} + 2\frac{5}{8} \simeq 5$

7 0

3 years ago

4 1/2 +1 3/5 (in the simplest form)

snow_lady [41]

6 1/10

Step-by-step explanation:

4 + 1/2+1+3/5

5+1+1/10=6 1/10

8 0

3 years ago

Nine fourths minus two thirds

Yuki888 [10]

Answer:

$1 \frac{7}{12} \: or \: 1.583$

Step-by-step explanation:

nine fourths is also

$\frac{9}{4}$

two thirds is also

$\frac{2}{3}$

subtract,

$\frac{9}{4} - \frac{2}{3}$

L.C.M = 12

$\frac{27 - 8}{12}$

$\frac{19}{12}$

$1 \frac{7}{12} \: or \: 1.583$

7 0

2 years ago

How many student preferred math??

stich3 [128]

B,13 students prefered math

5 0

3 years ago