It would be 28-10=x because your ending up with 28 after earning 10 you would get that. Hope this works!
One way in which to approach this problem would be to treat it as an equation of ratios and to cross multiply:
<span>[(4x + 15) / 5x)] = 1/2 could be written as:
4x + 15 1
----------- = ---
5x 2
Then 8x + 30 = 5x
3x = -30, and so x = -10 (answer). Be certain to check this answer through substitution!
</span>
Circumference formula is C= 2 * pi * r
C=188.5 (pi 60)
Answer:
.026
Step-by-step explanation: