Arianna is walking down the sidewalk. There are 3 cracks on every block. What is the fraction that represents the number of cracks Arianna walked on in 4 blocks? *

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

Find the multiplicative inverse of 8-12i

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor