(-7x+8y-2z)+(-9x-y+6z)
2 answers:
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Answer:
66.4°
Step-by-step explanation:
To find the angle XYZ, we are to use sine rule. For this, we have to first find ∠Z.
Given that: ∠X = 90° (right angle), XY = 6 cm, YZ = 15 cm. Hence:
∠X + ∠Y + ∠Z = 180° (sum of angles in a triangle)
90 + ∠Y + 23.6 = 180
113.6 + ∠Y = 180
∠Y = 180 - 113.6
∠Y = 66.4°
∠Y = ∠XYZ = 66.4°
principal=$1900
rate =13.6 %
simple interest= $35
Time=?
SIMPLE INTEREST ={PRINCIPAL×RATE×TIME}/{100}
$35=
$35×100=25840× TIME
TIME=
TIME=
TIME= years
sorry I can't solve wrong answer