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3 years ago

Multiply. 42.9 × 3.45

Mathematics

2 answers:

frosja888 [35]3 years ago

7 0

Answer:

42.9 x 3.45 = 148.005 exactly or 148 rounded

harkovskaia [24]3 years ago

3 0

Answer:

Hi! The answer to your question is 148.005

Step-by-step explanation:

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Hope this helps!!

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xz_007 [3.2K]

<span>This is a 30 - 45 - 105 angled triangle, so the answer would be A.
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3 years ago

Which expression is NOT equivalent to (a + b)(x + y)? A) (a + x)(b + y) B) (b + a)( y + x) C) (a + b)x + (a + b)y D) a(x + y) +

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Step-by-step explanation:

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3 years ago

A person is standing 50 ft from a statue. The person looks up at an angle of elevation of 8 degrees when staring at the top of t

borishaifa [10]

The height of the statue is 19.5 feet.

Why?

We can solve the problem using trigonometric formulas. In this case, we are going to use the trigonometric formula of the tangent.

We know that the person is standing 50ft from the statue, so, it will be the base of the two triangles formed by both angles (elevation and depression)

Using the trignometric formula, we have:

First triangle:

$tg(\alpha )=\frac{h_{1}}{base} \\\\tg(8\°)=\frac{h_{1}}{50ft}\\\\0.14*50ft=h_1\\\\h_1=7ft$

Second triangle:

$tg(\alpha )=\frac{h_{2}}{base} \\\\tg(14\°)=\frac{h_{1}}{50ft}\\\\0.25*50ft=h_1\\\\h_1=12.5ft$

Now, the total height of the statue will be:

$TotalHeight=h_1+h_2=7ft+12.5ft\\\\TotalHeight=19.5ft$

Have a nice day!

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3 years ago