Luke wants to play the 4 number game with the numbers 1, 2, 3, and 4 and the operations of addition, multiplication, and subtraction. leoni responds, "or we just could play the 4 number game with just the operation of addition and multiplication, but now with the numbers -1, -2, -3, -4, 1, 2, 3, 4 instead what observation is leoni trying to point out to luke?

i dont know

step-by-step explanation:

4+4+2x

or

2x+8

step-by-step explanation:

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

363 square inches

step-by-step explanation:

surface area of a pyramid is b + 1/2ph

b is the area of the base: 11 x 11 = 121

p is the perimeter of the base: 11 + 11 + 11 + 11 = 44

h is the height of the pyramid: 11

121 + 1/2(44)(11)

121 + 242

363