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Elanso [62]
3 years ago
12

X² + 8x' -2 Someone help me with this ???? Please

Mathematics
1 answer:
quester [9]3 years ago
7 0
Roots: (-4 -3V2 ;0) (-4+3V2 ;0)
Range: y€[-18; +♾)
Minimums: (-4; -18)
Vertical intercept: (0; -2)
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The probability that a train leaves on time is .07. The probability that the train arrives on time and leaves on time is 0.56. W
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Refer to the other answer.
6 0
3 years ago
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Use structure find the perimeter of equilateral triangle klm given the vertices k(-2, 1) and m(10, 6).
Deffense [45]

Perimeter of the equilateral triangle KLM with vertices K(-2 ,1) and M (10,6) is equal to 39 units.

As given in the question,

Coordinates of vertices K(-2,1) and M(10,6)

KM = \sqrt{ (10-(-2)^{2} +(6-1)^{2} }

      = \sqrt{12^{2}+5^{2}  }

      = 13units

In equilateral triangle  KL = LM = KM = 13 units

Perimeter of equilateral triangle KLM = 13 +13 +13

                                                           = 39 units

Therefore, perimeter of the equilateral triangle KLM with vertices K(-2 ,1) and M (10,6) is equal to 39 units.

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4 0
1 year ago
PLEASE HELP ME THIS IS DUE TOMMAROW!!!!
Y_Kistochka [10]

Answer:

4. $130.50

Step-by-step explanation:

Sorry, but I only know for no.4 which is $130.50.

Explanation: 18 hours is 20 percent more than 15 hours.


So all we have to do is multiply 1.2 to 108.75, since multiplying 1.2 is the equivalent to 20 percent.

Which then is why I get the answer of $130.50.


If that helped please hit Thank button!

4 0
3 years ago
A normal body temperature for a human is approximately 98° Fahrenheit. What is this temperature in degrees Celsius? Round your a
fomenos
A is the closest to correct
5 0
3 years ago
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two points on the same side of a tree are 65 feet apart. the angles of elevation of the top the tree are 21 19 from one point an
zloy xaker [14]
The question is find the height of the tree, given that at two points 65 feet apart on the same side of the tree and in line with it, the angles of elevaton of the top of the tree are  21° 19' and 16°20'.

1) Convert the angles to decimal form:

19' * 1°/60' = 0.32° => 21° 19' = 21.32°

20' * 1°/60' = 0.33° => 16° 20' = 16.33°

2) Deduce the trigonometric ratios from the verbal information.

You can form a triangle with

- horizontal leg  x + 65 feet
- elevation angle 16.33°
- vertical leg height of the tree, h

=> trigonometric ratio: tan (16.33) = h /( x + 65) => h = (x+65) * tan(16.33)

You can form a second triangle with:

-  horizontal leg x
- elevation angle 21.32°
- vertical leg height of the tree, h
 
=> trigonometric ratio: tan(21.32) = h / x  => h = x * tan(21.32)

Now equal the two expressions for h:

(x+65)*tan(16.33) = x*tan(21.32)

=> x*tan(16.33) + 65*tan(16.33) = x*tan(21.32)
=> x*tan(21.32) - x*tan(16.33) = 65*tan(16.33)
=> x = 65*tan(16.33) / [ tan(21.32) - tan(16.33) ] = 195.73 feet

=> h = 195.73 * tan(21.32) = 76.39 feet.

Answer: 76.39 feet
5 0
3 years ago
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