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dedylja [7]
3 years ago
15

Whats the answer to this numeric algebraic expression

Mathematics
1 answer:
Degger [83]3 years ago
4 0

Answer:

a+b+2

Step-by-step explanation:

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What is the solution of the system of equations?
Charra [1.4K]
When we are given a system of 3 linear equations, with 3 variables, we proceed as follows:

We consider 2 pairs or equations, for example (1, 2) and (2, 3), and eliminate one of the variables in each pair, creating a system of 2 linear equations with 2 unknowns. 

Note that the third equation contains -2y which can be used to eliminate easily -6y in the second equation, and -4y in the fourth.

i) consider equations 1 and 3:

-3x-4y-3z=-7
5x-2y+5z=9

multiply the second equation by -2:

-3x-4y-3z=-7
-10x+4y-10z=-18

adding the 2 equations we have -13x-13z=-25

ii) consider equations 2 and 3. Multiply the third equation by -3:

    2x-6y+2z=3
-15x+6y-15z=-27

adding the 2 equations we have -13x-13z=-24

So we got -13x-13z is -25, but also -24. this means the system is inconsistent, so it has no solution.

Answer: the system has no solutions
4 0
3 years ago
3x-1/5-2/9x=124/5<br>how do you solve this?
Sergeu [11.5K]
So first you would combine the like-terms so you get:
\frac{7}{9} x - \frac{1}{5} = 124 \div 5
and combine the second like-terms:
\frac{7}{9}x - \frac{1}{5} = 24.8
now you only have a two step equation and you continue by doing the reciprocal and you add the -1/5 to the 24.8 where you get:

7/9x=24.6

then because the 7/9 is being multiplied by the x and your trying to isolate it you divide it by the 7/9 on both sides and you'll end up getting

x=31.628571429....
6 0
4 years ago
Two functions, P and Q, are described as follows: Function P y = 5x + 3 Function Q The rate of change is 2 and the y-intercept i
Svetach [21]

Function P . . . . . y = 5x + 3

Function Q . . . . . y = 2x + 4

Function P rate of change  =  5
Function Q rate of change  =  2

The first one is  => 3 <=  more than second one.
7 0
3 years ago
Read 2 more answers
The volume V (in cubic feet) of a right cylinder with a height of 6 feet and radius r (in feet) is given by V=6πr2 . Solve the f
Advocard [28]

Answer:

r=8 ft

Step-by-step explanation:

V/6π=r2

r=√v/6π

r=√1206 cubic feet/6π

r=8 ft

4 0
3 years ago
Which choices are equivalent to the expression below?<br> Check all that apply.
gavmur [86]
There’s no answer choices..
5 0
3 years ago
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