it is the last one im pretty sure
You can use the Pythagorean Theorem:
a^2+b^2=c^2
x^2+x^2=(7√2)^2
2x^2=49*2 (combine like terms and square the 7√2)
x^2=49 (divide both sides by 2)
x=7 (square root both sides)
So the equation is 2x^2=98 (simplest form) and x=7
Hope this helps
You divide x by y to get the rate of change
Answer:
225.75
Step-by-step explanation:
Before Tax Price: $210.00
Sale Tax: 7.50% or $15.75
After Tax Price: $225.75
