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4 years ago

Solve this system of equations. 2x + 2y + 7z = -1 2x + y + 2z = 2 4x + 6y +z = 15

Mathematics

1 answer:

saw5 [17]4 years ago

3 0

Answer:

x =1

y = 2

z = -1

Step-by-step explanation:

I Hope it helps. Please if you need any clarification, let me know .

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What is the answer to<br><br> 7 y = 84

Furkat [3]

7y = 84
y = 84 /7
= 12

So, y =12

4 0

3 years ago

Solve for x in the equation x squared + 2 x + 1 = 17.

Papessa [141]

Answer:

$x = - 1 + \sqrt{17}\\and\\x = - 1 - \sqrt{17}\\$

Step-by-step explanation:

given equation

$x^2 +2x +1 = 17$

subtracting 17 from both sides

$x^2 +2x +1 = 17\\x^2 +2x +1 -17= 17-17\\x^2 +2x - 16 = 0\\$

the solution for quadratic equation

$ax^2 + bx + c = 0$ is given by

x = $x = -b + \sqrt{b^2 - 4ac} /2a \\\\and \ \\-b - \sqrt{b^2 - 4ac} /2a$

________________________________

in our problem

a = 1

b = 2

c = -16

$x =( -2 + \sqrt{2^2 - 4*1*-16}) /2*1 \\x =( -2 + \sqrt{4 + 64}) /2\\x =( -2 + \sqrt{68} )/2\\x = ( -2 + \sqrt{4*17} )/2\\x = ( -2 + 2\sqrt{17} )/2\\x = - 1 + \sqrt{17}\\and\\\\x = - 1 - \sqrt{17}\\$

thus value of x is

$x = - 1 + \sqrt{17}\\and\\x = - 1 - \sqrt{17}\\$

3 0

3 years ago

A recycling bin is in the shape of a rectangular prism has a volume of 960 inches is the base area of the recycling bin is 32 in

anygoal [31]

30 inches because 32x30=960 and the formula being used is V=bh.

3 0

3 years ago

Read 2 more answers

If b=4 units and h=5 units, the area of the triangle is _____<br> units2.

mestny [16]

Answer:

Step-by-step explanation:

Area = 1/2 b h

= 1/2 * 4 * 5

= 10 unit^2.

5 0

2 years ago

(79,35+7,32) × 42,2-9543

vladimir2022 [97]

Answer:

42(79,42,32)

Step-by-step explanation:

I got the solution by using the Trigonometric Identities. If somebody else could do a step by step explanation that would be great.

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3 years ago