Answer:
6
3
−
9
2
−
7
Step-by-step explanation:
Combine like terms
−
7
2
−
2
2
+
3
−
3
−
2
+
5
3
−
2
{\color{#c92786}{-7y^{2}}}{\color{#c92786}{-2y^{2}}}+y^{3}-3y-2y+5y^{3}-2y
−7y2−2y2+y3−3y−2y+5y3−2y
−
9
2
+
3
−
3
−
2
+
5
3
−
2
Combine like terms
−
9
2
+
3
−
3
−
2
+
5
3
−
2
-9y^{2}+y^{3}{\color{#c92786}{-3y}}{\color{#c92786}{-2y}}+5y^{3}{\color{#c92786}{-2y}}
−9y2+y3−3y−2y+5y3−2y
−
9
2
+
3
−
7
+
5
3
Combine like terms
−
9
2
+
3
−
7
+
5
3
-9y^{2}+{\color{#c92786}{y^{3}}}-7y+{\color{#c92786}{5y^{3}}}
−9y2+y3−7y+5y3
−
9
2
+
6
3
−
7
Rearrange terms
−
9
2
+
6
3
−
7
{\color{#c92786}{-9y^{2}+6y^{3}-7y}}
−9y2+6y3−7y
6
3
−
9
2
−
7
Solution
6
3
−
9
2
−
7
Answer:
Step-by-step explanation:
3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196
Find the value of x
x+9.8=14.7
x=4.9
Then plug it in the second equation
8(4.9-3.7)
8(1.2)
9.6
Hope this helps.
Answer:
15.95 feets
Step-by-step explanation:
Given that:
Angle of elevation = 62°
Using trigonometric relation :
Tanθ = opposite / Adjacent
From the drawing attached :
Opposite = 30 feets
Distance between girl and lighthouse = d
Tan 62 = 30 / d
1.8807264 * d = 30
d = 30 / 1.8807264
d = 15.951283
d = 15.95 feets
