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Rudik [331]
3 years ago
8

Melissa is standing 40 ft from a tree. The angle of elevation from where she is standing on the ground to the top of the tree is

50°.
How tall is the tree?



Round the final answer to the nearest tenth.

Enter your answer in the box.

Mathematics
2 answers:
AysviL [449]3 years ago
6 0

Answer:

47.7\ ft

Step-by-step explanation:

see the attached figure to better understand the problem

we know that

In a right triangle the tangent of an angle is equal to divide the opposite side to the angle by the adjacent side to the angle

so

In this problem

tan(50\°)=\frac{BC}{AC}

The tall of the tree is BC

BC=ACtan(50\°)

AC=40\ ft

substitute

BC=40*tan(50\°)=47.7\ ft

bagirrra123 [75]3 years ago
3 0
Tan(angle) = opposite length/ adjacent length

Tan(50) = h/40
h = 40 x tan(50)
h = 47.67 or 47.7 feet
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Step-by-step explanation:

Ok, I know this is not one of the options, but hear me out:

To find the sales tax for that item, you need to multiply the dollar amount by the sales tax (in percent):

$55 * 8.8% = $4.84

So the sales tax is $4.84.  However, the question asks "How much would you pay for that item?", not what the sales tax is.  So I would solve this problem by adding the sales tax to the dollar amount of the item:

$55 + $4.84 = $ 59.84

If you are able to write or type your answer, I would type $ 59.84. If you can only select one of the given values, then I would suggest going with             A: $ 4.84 just because its the only number that is actually relevant at all to the problem.

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3 years ago
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John finds a toy train set John finds a toy train set on sale for 20% off at a toy store. The original price was $35. John
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Well here's your answer straight <u><em>he must pay 29.82$ </em></u>and here's my work,

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Answer:

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Answer:

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Step-by-step explanation:

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F. determine if (x + 3) is a factor of (x) = 2x3 + x2 –8x + 21 by using synthetic division. if so, find the other factors.
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Since its x + 3 we use -3


-3| 2      1      -8      21           (these are the # without the x)
___________________

            -6     15     -21      
-------------------------------
    2      -5      7        0               
 
Drag the 2 down, multiple it by -3 to get -6 
1+(-6) = -5. -5 * -3 =15 . 15+(-8) = 7
7*-3 = -21. -21 +21 = 0 
Since last # is 0 we have a factor.


 factor is 2x^2 -5x -7 (we start with a power 1 less the original.)

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