First, he converted $1750 to Chilean pesos. To find the amount he had in Chilean pesos, you have to multiply 1750*496.5000. You should get 868,875. Now subtract what he spent, and you get 651362 pesos. To find how many bolivars he had, multiply again. 651362*0.1283=83569.74. Then he spent 38422.19, leaving with 45147.55. Multiply once more to find his amount in guarani. He got super rich, with 48034735.82 guaranis. Subtract again, and you end up with 35177294.43. Finally, multiply for the dollars. Your answer should be b.
2cos2x=y
dy/dx(2cos2x)=-4sin2x
d/du cosu= u'×cos'u=-u'×sinu
d/du sinu= u'×sin'u= u'×cosu
d/du tanu = u'×(1+tan²u)
d/du cotu = u'×-(1+cot²u)
proof for cosu :
cos2x= 1-2sin²x
or 2cosx²-1
or cos²x-sin²x
we will one of this fro example let's take the first one
d/dx 1-2sin²x=0-2×2(sinx)×cosx=-2sin2x
and we have 2 in the begining so its -4sin2x
Answer:
B
Step-by-step explanation:
3m+3.5=-2m+2.5
5m=-1
m=-1/5
Answer: 3
Explanation: (7x7) + (7x3) = 7x10
7x7 = 49
7x3 = 21
7x 10 = 70
49+21= 70
Hope this helps! <3