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Veronika [31]
3 years ago
14

Select the best method of finding an accurate solution to a system of linear equations.

Mathematics
1 answer:
dsp733 years ago
3 0
A.use algebraic methods
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Find the point on the x-axis that is equidistant from the points (−3,−1) and (1,6)
Klio2033 [76]

well, we'll be using the distance formula twice here.

that point, is on the x-axis, what's the value of "y" at the x-axis?  well y = 0, since it's way down at the 0 level, so the point must be (x , 0).

the distance then from (x,0) to (-3,-1) is the same distance as from (x,0) to 1,6).

\bf \begin{array}{rcllll} \stackrel{\textit{distance from (x,0) to (-3,-1)}}{\sqrt{(-3-x)^2+(-1-0)^2}}&=&\stackrel{\textit{distance from (x,0) to (1,6)}}{\sqrt{(1-x)^2+(6-0)^2}} \\\\\\ (-3-x)^2+(-1-0)^2&=&(1-x)^2+(6-0)^2 \\\\\\ 9+6x+x^2+1&=&1-2x+x^2+36 \\\\\\ x^2+6x+10&=&x^2-2x+37 \end{array} \\\\\\ 6x+10=-2x+37\implies 8x+10=37\implies 8x=27 \\\\\\ x = \cfrac{27}{8}\implies x = 3\frac{3}{8}~\hfill \blacktriangleright \left( 3\frac{3}{8}~,~0 \right) \blacktriangleleft

4 0
4 years ago
Is this proportion true 12/15=47/50<br>16/36=12/27<br>15/20=24/26<br>or 4/16=2/14
jekas [21]
For <span>12/15=47/50, we multiply 12/15 by (1/3)/(1/3) to get 4/5. For 47/50, we multiply it by (1/10)/(1/10) to get the same denominator and 4/7/5. They are not equal.

For 16/36 and 12/27, we'll notice that 36 and 27 are both multiples of 9, so we need to get that as the denominator! Multiply 16/36 by (1/4)/(1/4) because 9 goes into 36 4 times and 12/27 by (1/3)/(1/3) due to that 27 goes into 9 3 times, we get 4/9=4/9 - these are equal!

I challenge you to get the rest of them on your own using my techniques!</span>
3 0
3 years ago
Describe all the numbers that when rounded to the nearest thousand are 645,000. Please help due tomorrow giving 10 points
Dafna11 [192]
That rounds to 645, 000 -644,999
4 0
3 years ago
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CAN SOMEONE PLS HELP!???
s344n2d4d5 [400]

Answer: 10%, 0.5, 3/4


Step-by-step explanation:

What you want to do is convert them all to one unit. The eaisest would be a decimal.

Starting off with .5, it's already in decimal form.

Next go to 10%. 10% as a decimal will be 0.1, because its 1/10.

Lastly, go to 3/4. 3/5 as a decimal would be 0.75.

Putting them in order from least to greatest would be 10%, 0.5, 3/4.

(Hope that helps)

3 0
3 years ago
Read 2 more answers
Hey! I don’t have a question, but whoever comments first I’ll mark brainliest!
asambeis [7]

Answer:

Hello there

Step-by-step explanation:

4 0
3 years ago
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