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Eva8 [605]
3 years ago
7

A line having a slope 3/4 passes through the point (-8,4). Write the equation of this line.

Mathematics
1 answer:
Aneli [31]3 years ago
6 0

Answer:

y-4=3/4(x+8)

Step-by-step explanation:

y-y1=m(x-x1)

y-4=3/4(x-(-8))

y-4=3/4(x+8)

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What is the value of 6x^3 +8x when x = 5
sertanlavr [38]
Just sub x in with 5.
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4 years ago
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notsponge [240]

Answer:

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Step-by-step explanation:

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3 years ago
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The sun casts a 70 foot shadow on a 30 foot tree. Find the angle of elevation to the nearest degree.
Nesterboy [21]

Answer:

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Step-by-step explanation:

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h^2+b^2=H^2\\\\70^2+30^2=H^2\\\\H=\sqrt{5800}\\\\=76.15773\ ft

This hypotenuse corresponds to the right triangle and the tree's height, corresponds to the angle of elevation:

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\frac{a}{Sin \ A}=\frac{b}{Sin\ B}\\\\\\\frac{76.15773}{Sin \ 90}=\frac{30}{Sin\  h}\\\\h=Sin^{-1}\frac{30}{76.15773}\\\\=23.19859\approx 23\textdegree

Hence, the angle of elevation is 23°

8 0
3 years ago
I need help with this
oksian1 [2.3K]

Area of a triangle is 1/2 x base x height:

Area = 1/2 x 8 x 20.5 = 82 square cm.

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3 0
4 years ago
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Which expressions are equal to 0 when x = -1? Check all that apply.
Sphinxa [80]

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A C and E

Step-by-step explanation:

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