Plz ! which equation represents: "four times an unknown integer, multiplied by three times the unknown integer plus a different unknown integer, equals 100." a) 12x^2 + 4xy + 100 = 0 b) 12x^2 − 4xy + 100 = 0 c) 12x^2 + 4xy − 100 = 0 d) 12x^2 − 4xy − 100 = 0

answer

you start with $5 and save $10 a week until you have at least $45wer

step-by-step explanation:

a is 8.b is 10.c is 10.5. d is -.5

step-by-step explanation:

just minus the smallest number from the biggest.

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