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3 years ago

X+2y-z = 9 -2x+y+z= 1 2x-y+2z= -5

Mathematics

1 answer:

hodyreva [135]3 years ago

7 0

Answer:

I don't understand the first one

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The first answer in Question A is Business Plan and the second answer is $3 less.

The first answer in Question B is 12 and the second answer is Residential Plan.

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3 years ago

A cylindrical well has a radius of 10 feet and a height of 15 feet.what volume of water will it take to fill in the well?

horsena [70]

The volume of the well...
V ≈ 4712.39

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3 years ago

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Can someone help me please?! I'll give brainlest for correct answer

mojhsa [17]

1.) The answers:

A) BME

B) MER

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2 years ago

8х + 5у = -7 — 7х + бу = — 4

Levart [38]

Answer: x = -0.2651 and y = -0.9759

Step-by-step explanation:

Solution by substitution method

8x+5y= -7

-7x+6y= -4 = 7x-6y=4

Suppose,

8x+5y=-7→(1)

7x-6y=4→(2)

Taking equation (1), we have

8x+5y= -7

⇒8x= -5y -7

⇒x= -5y-7 / 8 →(3)

Putting x= -5y-7 / 8

in equation (2), we get 7x-6y=4

7(-5y-7/8)-6y=4

⇒-35y-49-48y=32

⇒-83y-49=32

⇒-83y=32+49

⇒-83y=81

⇒y= 81 / -83

⇒y= -0.9759→(4)

Now, Putting y= -0.9759 in equation (3), we get

x= -5y-7

x= -5(-0.9759)-7/8

⇒x= 4.8795-7/8

⇒x= -2.1205/8

⇒x= -0.2651

∴x= -0.2651 and y = -0.9759

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3 years ago

Solve for g: 4g/14 - 3/7 - g/14 = 3/14

Luden [163]

Answer:
g = 3

Explanation:
To solve for g, we will need to isolate the g on one side of the equation.
This can be done as follows:
 $\frac{4g}{14} - \frac{3}{7} - \frac{g}{14} = \frac{3}{14}$ 

1- multiply all terms by 14 to get rid of the fraction:
4g - 6 - g = 3

2- Combine like terms:
4g - g = 3 + 6
3g = 9

3- Isolate the g:
 $\frac{3g}{3} = \frac{9}{3}$

g = 3

Hope this helps :)

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3 years ago

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