The table shows numbers with the ratio x : y? Find the missing number?

Mathematics

2 answers:

LenaWriter [7]3 years ago

6 0

Answer:

The value of missing number is:

Step-by-step explanation:

The ratio x:y is given below

x:y=1:4

x:y=15:?

x:y=225:900

The ratio x:y will remain same for every x and y

Hence, 1:4=15:?

Let a=?

$\dfrac{1}{4}=\dfrac{15}{a}$

$a=15\times 4$

a=60

Hence, the value of missing number is:

prisoha [69]3 years ago

5 0

X| 1 | 15 | 225 |
y| 4 | ? | 900 |

$\dfrac{y}{x}=const.$

therefore

[tex]\dfrac{4}{1}=4;\ \dfrac{900}{225}=4;\ \dfrac{?}{15}=4\to?=60[\tex]

Answer: ? = 60

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Which algebraic expression represents the phrase “two times the quantity of a number minus 12”?

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Answer:

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Step-by-step explanation:

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let the quantity mentioned in the question be 'x'

therefore according to the statement the algebraic expression which represents the phrase “two times the quantity of a number minus 12” is : 2x- 12 is

⇒2x - 12 (answer)