Simplify: -4 1/5 (-13 1/10) (5 points) (a) 8 9/10 (b) -8 9/10 (c) -17 3/10 (d) 17 3/10

(C) -17 3/10

Step-by-step explanation:

We assume you want the sum ...

... (-4 1/5) + (-13 1/10)

... = -4 -1/5 -13 -1/10

... = (-4 -13) +(-2/10 -1/10) . . . . . . rewrite 1/5 as 2/10

... = -17 -3/10

... = -(17 3/10)

it's d.

step-by-step explanation:

because: -1(4x + 1y) +2 (1x-3y) distribute each number into the parenthesis.

then you would get: -4x - 1y + 2x -6y combine like terms

and get: 2x -7y

hope my answer has you if not then i'm sorry.

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