hi !
8200 × 10² = 8.2 × 10³ × 10² = 8.2 × 10⁵
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Answer:
A
Step-by-step explanation:
ewqrui
Answer:
The motion of the particle describes an ellipse.
Step-by-step explanation:
The characteristics of the motion of the particle is derived by eliminating in the parametric expressions. Since both expressions are based on trigonometric functions, we proceed to use the following trigonometric identity:
(1)
Where:
(2)
(3)
By (2) and (3) in (1):
(4)
The motion of the particle describes an ellipse.
<span>7/10 = 0.7
hope it helps</span>
Answer:
27°
Step-by-step explanation:
Let line AB be extended to touch line DC at point F, thereby forming triangle BCF.
∠ABC + ∠BCE = 180° (sum of interior angles in a transversal).
∠ABC + 48 = 180
∠ABC = 180 - 48 = 132°
Also in triangle ADF, ∠ADF + ∠DFA + ∠FAD = 180 (sum of angle in a straight line)
85 + ∠DFA + 25 = 180
∠DFA + 110 = 180
∠DFA = 180 - 110 = 70
∠DFA = 70
∠DFA + ∠BFC = 180° (sum of angle on a straight line)
∠BFC + 70 = 180
∠BFC = 180-70 = 110
∠BFC = 110°
∠ABC + ∠CBF = 180° (sum of angle on a straight line)
132 + ∠CBF = 180
∠CBF = 1800 - 132 = 42
∠CBF = 42°
In triangle BCF:
∠BFC + ∠CBF + x = 180° (sum of angle in a triangle)
42 + 110 + x = 180
x + 152 = 180
x = 180 - 152
x = 27°