4. the blueprint of a deck has a scale of
2 centimeters equals 9 feet. the scale
drawing is shown below.
8 cm
10 cm
6 cm
part a
what are the actual lengths of the
sides of the deck?
part b
decking costs $1.75 per square
foot. how much will it cost to build
the deck?

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

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.

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.