Question

Hh i know how to do this but i need help doing so-

Answer 1

Answer:

Step-by-step explanation

So you need the fraction to equal 2.4 and you don't know the numerator. 5 times 2.4 equals 12 so the numerator has to equal 12 so the answer is c

Answer 2

Answer:

  x = 4

Step-by-step explanation:

Undo what is done to the variable, in reverse order. The variable is multiplied by 3/5 and 0.5 is subtracted from the result.

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To undo those operations, first you undo the subtraction by adding 0.5 to both sides of the equation. This gives you ...

  3x/5 = 2.4

To undo the multiplication by 3/5, you can multiply by the inverse of that value, 5/3. Multiplying both sides of the equation by 5/3 gives ...

  x = (5/3)(2.4) = 12/3

  x = 4