Uli wants to write the phrase “the difference of seven and a number squared” as an algebraic expression. She wrote out several expressions in the table. Which expression correctly represents the phrase?

x/3-10=8

x/3=18

x=48

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d

  or  

sin y = 7/q

7 is the opposite side length, q is the hypotenuse

tan y = 7/r

7 is the opposite side length, r is the adjacent side length

using sohcahtoa ^^^^

cos y = adjacent/hypotenuse

cos y = r/q