Acereal mixture contains rice, wheat and corn in the ratio of 3: 7: 9. how many kilograms of mixture are there if it contains 2.1 kg of wheat?

Total cereal mixture is 5·7 kg

Step-by-step explanation:

A cereal mixture contains in rice , wheat and corn

In a ratio of rice, wheat and corn is  

let the number be x

Rice    3x

Wheat    7x

Corn  9x

Total cereal mixture is 19x

Wheat 2·1 kg

So, Wheat 7x equals to 2·1 kg

7x 2·1 kg

x kg

x 0·3 kg

Total cereal mixture is 19x

19 ₓ 0·3  5·7 kg

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!