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Dahasolnce [82]
3 years ago
6

The substitution method: Solve for x in the second equation and substitute it into the first equation. The result is .

Mathematics
2 answers:
Dvinal [7]3 years ago
7 0

Answer: solve for c in a second equation and substitute: correct is 2(-3+2y) +5y= -6. 100% correct.

Step-by-step explanation:

jek_recluse [69]3 years ago
5 0

Suppose you have the following system of linear equation:


\left \{ {{(1) \ ax+by=c} \atop {(2) \ dx+ey=f}} \right.


According to the statement above, first we need to solve for x in the second equation:


dx+ey=f \\ \\ \therefore x=\frac{f-ey}{d}


Next we need to substitute x into the first equation, so:


a\left(\frac{f-ey}{d}\right)+by=c


So, the conclusion is that from this last equation the result we can get is y. Then, by substituting the value of y in the first or second equation we can get x.

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If g(x) = x4<img src="https://tex.z-dn.net/?f=x%5E%7B2%7D" id="TexFormula1" title="x^{2}" alt="x^{2}" align="absmiddle" class="l
ELEN [110]
Answer: 69,904

Explanation:
g(-16)= (-16)^4-(-16)^3+(-16)^2-(-16)
g(-16)= (65,536)-(-4,096)+(256)-(-16)
g(-16)= 65,536+4,096+256+16
g(-16)=69,904

4 0
3 years ago
Determine 3rd term in the geometric sequence whose first term is -8 and whose common ratio is 6
Brrunno [24]
-8, -48, -288
or
-8, -4/3, -2/9
3 0
2 years ago
Read 2 more answers
A rectangular garden has a diagonal length of 18 m. What are the side lengths to the nearest Meter?
QveST [7]
If it's a square then sides equal to around 12-13 meters
3 0
3 years ago
What is sin -1(1/2) if the terminal side of 0 is located in quadrant 1.
kotykmax [81]

Answer:

30

Step-by-step explanation:

\sin^{-1}(\theta) is going to output a number in between \frac{-\pi}{2} and \frac{\pi}{2}.

Luckily you are looking for \theta in the 1st quadrant which is contained in the given interval above, so the answer just comes down to what the calculator returns from entering \sin^{-1}(\frac{1}{2}) in your calculator.

You may also use the unit circle.  sine value refers to the y-coordinate on there.

So you are looking for when the y-coordinate is 1/2 in the fist quadrant which is at 30 degrees.

4 0
2 years ago
Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 s? 100+20100+2
Alborosie
Use the formula for the constant speed: distance run  / time elapsed

Then the expression is 100 / 20.
4 0
3 years ago
Read 2 more answers
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