50 points please help! A car going 110 km/hr southwest reaches a curve in the road. Assume that the curve is an arc of a circle. After rounding the curve, the car's velocity is 110 km/h west. The car takes 2.50 s to round the curve.
a. what's the car's acceleration?
b. what is the length of the car's path on the road?
c. If the car instead maintained a steady speed of 100 km/h how long would it take to round the curve?

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

The figure below shows rectangle abcd and the triangle eca on a coordinate plane. which of the following expressions represents the perimeter of triangle of triangle eca in units