Answer: the third answer (C)
Step-by-step explanation:
Equation to find number's value:
Number's value: n = 35
Explanation:
Let n be the unknown number for this problem.
One fifth of a number is the same as .
Three times the number is the same as 3n.
Twice the number plus 42 is the same as 2n + 42.
So, using the information we've gathered so far, we can create the equation that will provide us with n's value.
Equation:
We can use this equation to find n's value.
You can subtract 2n from both sides to get the equation , which is the same thing as the equation we were using.
Now add n and together to get .
After you do this, your equation should look like .
Now divide both sides by to get n's value.
n = 35
It would be 30%profit it in so it would be 3.00
We know that 1/2 and above rounds up and below 1/2 rounds down
3/10 is lower than 1/2
When you round down you get 20
Your answer is 20
Hope this helped!
area = pi x r^2
615.75 = 3.14 x r^2
r^2 = 615.75/3.14 =196.0987 round to 196.1
r = sqrt(196.1) = 14.00357 round to 14
radius = 14 kilometers