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3 years ago

5

Solve the following system of equation using gaussionelimination methodx + 3y - 2z= 0

1 answer:

Elenna [48]3 years ago

8 0

Answer:

(−3y+2z,y,z)

Step-by-step explanation:

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Find x<br><br> 5x-7+8x-55<br><br> 13 POINTS <br><br> Show work please

Law Incorporation [45]

Combine like terms. The 5x is grouped to the 8x and the -7 isgrouped with the -55.

This means 5x + 8x = 13x and -7 - 55 = -62

The new expression is 13x - 62. We can't find the exact value of x because the expression wasn't set equal to anything.

3 0

3 years ago

Read 2 more answers

What is the answer to this 3a^2-9a

olchik [2.2K]

If i'm correct, the answer should be

-3a

hope this helped! 8)

4 0

3 years ago

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น. <br><img src="https://tex.z-dn.net/?f=x%20%3D%201%20-%20%20%5Csqrt%7B2%7D%20find%20%20%5C%3A%28x%20-%20%20%5Cfrac%7B1%7D%7Bx%

Nastasia [14]

Answer:

Step-by-step explanation:

$\frac{1}{x}=\frac{1}{1-\sqrt{2}}\\\\=\frac{1*(1+\sqrt{2})}{(1-\sqrt{2})(1+\sqrt{2})}\\\\=\frac{1+\sqrt{2}}{1^{2}-(\sqrt{2})}\\\\=\frac{1+\sqrt{2}}{1-2}\\\\=\frac{1+\sqrt{2}}{-1}\\\\= -[1+\sqrt{2}]\\\\x-\frac{1}{x}=1-\sqrt{2}-(-[1+\sqrt{2}])\\\\=1-\sqrt{2}+1+\sqrt{2}\\\\=2$

8 0

3 years ago

Please help solve this question been stuck for a while

damaskus [11]

Answer:

7.7

Step-by-step explanation:

To find the intersection points of the line and the circle we have to set up a system with their equations and solve. The system would look like this:

$\left \{ {{x=1 } \atop {x^2+y^2=16}} \right.$

To solve, substitute 1 for x in the second equation to get:

$1^2+y^2=16$

Solving, we get:

$y=\sqrt{15}, y=-\sqrt{15}$

Therefore, the two points of intersection are $(1,\sqrt{15} )$ and $(1,-\sqrt{15})$ . The distance between these two points (the length of the chord in the circle) is $2\sqrt{15}$ which is 7.745966692414... which is 7.7 rounded to the nearest tenth.

Hope this helps :)

6 0

3 years ago

There are 20 school days in a month. About how many miles does Manuel walk each month? Write an equation to show your work.

Sladkaya [172]

Answer:

he walks at lest 5 miles

Step-by-step explanation:

3 0

2 years ago