Which equation correctly uses the law of cosines to solve for y?
a) y^2 = 9^2 + 19^2 -2(y)(19)cos(41*)
b) y^2 = y^2 + 19^2 -2(9)(19)cos(41*)
c) y^2 = 9^2 + 19^2 -2(y)(19)cos(41*)
d) 9^2 = y^2 + 19^2 -2(y)(19)cos(41*)

80 the answer is 80

step-by-step explanation:

a rotation about point l

step-by-step explanation:

quizlet

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.

answer:

total cost for tiles and paints is $924.  

step-by-step explanation:

we have been given that a community hall is in the shape of a cuboid. the hall is 40m long 15m high and 3m wide.

the paint will be required for 4 walls and ceiling.

let us find area of walls and ceiling.

therefore, the area of walls and ceiling is 1410 square meters.

given: cost for 10 litre of paint is $10 and 10 litre paint covers 25 square meter. therefore,

therefore, the total painting cost is $564.

tiles will be required for floor. let us find the area of floor.

given: 1m squared floor tiles costs $3. so,

therefore, the total tiles cost is $360.

now let us find combined total cost of tiles and paint.

therefore, the combined total cost of tiles and paint is $924.