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3 years ago

Please help again forgot everything Again

Mathematics

2 answers:

Vanyuwa [196]3 years ago

8 0

Answer:

Option D

Step-by-step explanation:

a/3 = 8/6

a × 6 = 8 × 3

6a = 24

a = 24/6

a = 4

Hence,

Option A is correct

Elina [12.6K]3 years ago

6 0

Answer:

Step-by-step explanation:

cross multiply

a x 6=3 × 8

or,a=24/6

There fore a=4

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beks73 [17]

Answer:

2.8 liters

12400 cm^3

Step-by-step explanation:

1000 cm^3 = 1 iter

2800 cm^3 * (1 liter)/(1000 cm^3) = 2.8 liters

12.4 liters * (1000 cm^3)/(1 liter) = 12400 cm^3

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3 years ago

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ELEN [110]

Answer:

( 1 , 6 )

Step-by-step explanation:

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nika2105 [10]

I think the answer is D

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:

23°

Step-by-step explanation:

We apply Pythagorean theorem to determine the missing length, Hypotenuse:

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

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

-We apply the law of Sines;

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

Hence, the angle of elevation is 23°

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3 years ago

Warren Anderson's annual salary is $54,500. His personal exemptions total $1,500. The annual tax

Anuta_ua [19.1K]

Answer:

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Step-by-step explanation:

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