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Artemon [7]
3 years ago
9

Using the terms below, group like terms

Mathematics
1 answer:
Ahat [919]3 years ago
4 0

Answer:

= 3a + 7b - 8c

Step-by-step explanation:

In addition of algebraic expressions while adding algebraic expressions we collect the like terms and add them. The sum of several like terms is the like term whose coefficient is the sum of the coefficients of these like terms.

Horizontal Method: In this method, all expressions are written in a horizontal line and then the terms are arranged to collect all the groups of like terms and then added.

(6a + 8b - 7c) + (2b + c - 4a) + (a - 3b - 2c)  

= 6a + 8b - 7c + 2b + c - 4a + a - 3b - 2c  

Arrange the like terms together, then add.  

Thus, the required addition  

= 6a - 4a + a + 8b + 2b - 3b - 7c + c - 2c  

= 3a + 7b - 8c

Column Method: In this method each expression is written in a separate row such that there like terms are arranged one below the other in a column. Then the addition of terms is done column wise.

6a + 8b - 7c  

- 4a + 2b +  c  

    a - 3b - 2c  

  3a + 7b - 8c  

 = 3a + 7b - 8c

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Step-by-step explanation:

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3 years ago
Graph the function y = 4 . Then use the graph to find the missing x- or y-coordinates for the function to the nearest hundredth.
Elodia [21]

Given equation is y=4.

Question says to graph the given equation y=4 then use the graph to find the missing x- or y-coordinates for the function to the nearest hundredth.

Equation y=4 has no "x" so that means line y=4 will be a horizontal line which passes through 4 on y-axis.

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y-intercept is (0,4) as the line crosses at 4 on y-axis.


5 0
3 years ago
The water in a reservoir decreased by 47% during a drought. Before the drought, the reservoir held 44,580 acre ft (AF) of water.
RSB [31]


44,580 x 47 %

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So, the water decreased 20,952.6 ft

If you want the water level after the drought just subtract.

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Hope this helps. :)

5 0
3 years ago
The pitch of a roof is its slope. The roof of a home rises vertically a distance of 8 ft through a horizontal distance of 15 ft.
PIT_PIT [208]
If we discuss this as if it is a triangle then the "rise" is the vertical side and the "run" is the adjacent side.
So the ratio of the rise to the run is 8 / 15 which equals <span> <span> <span> 0.5333333333 </span> </span> </span>
To find the angle of this roof pitch we look up the arc tangent of <span> <span> <span> 0.5333333333  </span> </span> </span> and we find that is 28.072 Degrees

Trigonometry Calculator:
http://www.1728.org/trigcalc.htm




4 0
3 years ago
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