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3 years ago

a triangle has a base of 8.6 feet and a height of 6.2 feet find the area of the triangle. write your answer as a decimal

Mathematics

1 answer:

Leno4ka [110]3 years ago

4 0

Answer:

A = 26.66 ft^2

Step-by-step explanation:

Recall, please, that the formula for the area of a triangle of base b and height h is

A = (1/2)(base)(height).

Here,

A = (1/2)(8.6 ft)(6.2 ft) = 26.66 ft^2, or 26 2/3 ft^2.

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Step-by-step explanation:

The sinusoidal function is given by :

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where, A = amplitude; $\omega=\dfrac{2\pi}{period}$ , α= phase shift on the Y-axis and C = midline.

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$82=12\sin[\dfrac{\pi}{12}(x-10)]+85\\\\\Rightarrow\ -3= 12\sin[\dfrac{\pi}{12}(x-10)]\\\\=\dfrac{-1}{4}= \sin[\dfrac{\pi}{12}(x-10)]\\\\\Rightarrow\ \dfrac{\pi}{12}(x-10)=\sin^{-1}(\dfrac{-1}{4})\\\\\Rightarrow\ x-10=\dfrac{12}{\pi}(\sin^{-1}(\dfrac{-1}{4}))\\\\\Rightarrow\ x=\dfrac{12}{\pi}(\sin^{-1}(\dfrac{-1}{4}))+10\\\Rightarrow\ x\approx9.03$

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3 years ago