2 years ago

5. Find the value of x in each of the following. 2/3=6/x. 4/7=x/21

Mathematics

1 answer:

nikitadnepr [17]2 years ago

7 0

6/9 and 12/21
i think this is the answer your looking for

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3x+3y=27<br> 3x-3y= -11<br> using elimination

Taya2010 [7]

3x + 3y = 27
3x - 3y = -11
------------------add
6x = 16
x = 16/6 which reduces to 8/3

3x + 3y = 27
3(8/3) + 3y = 27
8 + 3y = 27
3y = 27 - 8
3y = 19
y = 19/3

solution is (8/3, 19/3)

3 0

3 years ago

Reema and Sohini bought (x^2 - 9) mangoes.They divided into (x+3) groups.Each group has three rotten mangoes.How many good

Gemiola [76]

Answer:

x - 6

Step-by-step explanation:

divide number of mangoes bought by number of groups, that is

$\frac{x^2-9}{x+3}$

= $\frac{(x+3)(x-3)}{x+3}$ ← numerator is difference of squares

cancel the factor (x + 3) on numerator/denominator

number in each group = x - 3

subtract 3 rotten mangos from group for good mangoes

good mangoes = x - 3 - 3 = x - 6

6 0

3 years ago

When a mathematician writes QED at the end of a proof, what does this

blondinia [14]

(C)

Step-by-step explanation:

Q.E.D means "quod erat demonstrandum" indicating that the proof is completed.

6 0

3 years ago

which equation would help you solve this problem? there are 18 muffins on a plate. if they are split equally among 9 people, how

cluponka [151]

They would each get 1 muffin ( 18/9=2)

3 0

3 years ago

Can someone please help

choli [55]

The answer is C, 2 over 11.

There are 11 letters in Mississippi, and there is 2 p's, there fore, he has a 2 out of 11 chance to get a P.

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3 years ago