120% of x is equal to 78. x =
1 answer:
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Answer:
x = 18
Step-by-step explanation:
Given
+ 1 =
+ 7 ( subtract 1 from both sides )
=
+ 6
Multiply through by 15 to clear the fractions
9x = 4x + 90 ( subtract 4x from both sides )
5x = 90 ( divide both sides by 5 )
x = 18
Answer:
Options (1), (2), (3) and (4)
Step-by-step explanation:
By applying the sine and cosine rules in the given triangle,
sinθ =
cosθ =
cos(30°) =
=
=
sin(30°) =
=
=
cos(60°) =
=
=
sin(60°) = =
=
=
Options (1), (2), (3) and (4) are the correct options.