Ashop owner bought some shovels for $5,500. the shovels were sold for $7,300, with a profit of $50 per a shovel. how many shovels were involved?
a. 18.
b. 36.
c. 55.
d. 73.
e. 90.
f. none of these.

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x+10 degree), what is the value of x?

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.