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Minchanka [31]
3 years ago
13

Simplify completely x2 + 4x - 45/x2 +10x+9 and find the restrictions on the variable.

Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

The correct answer is,

{x}^{2}  + 14x -   \frac{45}{ {x}^{2} }  + 9

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alex41 [277]
Put the first number on top then start adding 6+0, 8+1, 0+4, 1+1, 0+0 and the answer is 69420
7 0
3 years ago
Evaluate the expression for the given value of the variable <br> 3a+4b; a= -6, b=-5
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3 x -6 + 4 x -5
= -18+ -20
= -38
5 0
3 years ago
Read 2 more answers
the angle of elevation of the top of a building from a point 80 ft away from the building on level ground is 70° determine the b
MA_775_DIABLO [31]
Draw a triangle with shortest side on the ground (horiz.).  The length of this side is 80 feet.  Two angles touch the ground:  a right angle, and the 70 degree angle.
 
Then the height of the building is the 2nd shortest side.

The tangent function is the appropriate one to use here:
                       opp          h
tan 70 deg = -------- = ----------
                        adj        80 ft
                                                                h
Since tan 70 deg  = 2.75,          2.75 = -------
                                                              80 ft

so h = building height = (80 ft)(2.75) = 219.8 ft
6 0
4 years ago
When exercising, the maximum heart rate (r ) in beats per minute is modeled by the equation shown in the box, where (a ) represe
worty [1.4K]

Answer:

186 beats per minute

Step-by-step explanation:

The maximum heart rate (r ) in beats per minute is modeled by the equation :

r = 220 - a ...(1)

Where

a is age of the person in years

If Sanchez age is, a = 34 years

Put a = 34 in equation (1)

r = 220 - 34

= 186 beats per minute

Hence, the maximum heart rate is 186 beats per minute.

7 0
3 years ago
Find two consecutive even integers whose sum is 126. write an equation.
Ilya [14]

Answer: Ist integer = 32

2nd integer = 34

Step-by-step explanation: SEE THE ATTACHED

7 0
4 years ago
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