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saw5 [17]
3 years ago
9

Find the area of a triangle with base of 10 inches and altitude to the base of 16 inches.

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
4 0
(10*16)/2
160/2=80
The area is 80.

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3 years ago
Solve for x. 8x2−3=2
gavmur [86]

8x^2 -3 = 2

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7 0
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does the following system of equations have a solution if so find it. 2x+y+z= 4 x-y+3z= -2 -x+y+z= -2
saul85 [17]
I'd suggest using "elimination by addition and subtraction" here, altho' there are other approaches (such as matrices, substitution, etc.).

Note that if you add the 3rd equation to the second, the x terms cancel out, and you are left with the system

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   y  + z  =  -2
-----------------
         4z = -4, so z = -1.

Next, multiply the 3rd equation by 2:  You'll get -2x + 2y + 2z = -2.

Add this result to the first equation.  The 2x terms will cancel, leaving you with the system

2y + 2z = -2
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This would be a good time to subst. -1 for z.  We then get:

-2y - 2 = -2.  Then y must be 0.  y = 0.

Now subst. -1 for z and 0 for y in any of the original equations.

For example, x - (-1) + 3(0) = -2, so x + 1 = -2, or x = -3.

Then a tentative solution is     (-3, -1, 0).

It's very important that you ensure that this satisfies all 3 of the originale quations.
5 0
3 years ago
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marshall27 [118]

Answer:

Step-by-step explanation:

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3 years ago
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