Please help D=1/3fk solve for k
1 answer:
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Answer:
a) 3/7
b) $14
Step-by-step explanation:
let the total of his Money be x
on some comics = 3/7 of x
remaining money = x - 3x/7
on a pack of cards = 1/4 of 4x/7
a) left fraction = total money - all spent money
<em>note that</em>; all spent money = money spent on some comics and pack of cards
left fraction = 3/7 of the money
b) left money = 3x/7
but since left money is $6
therefore, $6 = 3x/7
multiply both sides by 7
42= 3x
divide both sides by 3
x = 42/3
x = 14
total money = $14
Answer:
254.4 in²
Step-by-step explanation:
Area of a circle is given by the formula:
Our radius is 9 so we substitute this into the equation:
π(9)² = 81π
81π = 254.4 in²
Answer:
Step-by-step explanation:
We can substitute the given values of ,
, and
to find the value of this expression.
We know that <em>two negatives make a positive. </em>This means that will be the same this as
Adding a negative is the same as subtracting a positive.
Hope this helped!