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Reil [10]
3 years ago
13

If = 2 + √3, find the value of

mula1" title="x^{2} +\frac{1}{x^{2} }" alt="x^{2} +\frac{1}{x^{2} }" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
charle [14.2K]3 years ago
7 0

Answer:

Right outside of this one church town

There's a gold dirt road to a whole lot of nothin'

Got a deed to the land, but it ain't my ground

This is God's country

We pray for rain, and thank Him when it's fallen

'Cause it brings a grain and a little bit of money

We put it back in the plate

I guess that's why they call it God's country

Step-by-step explanation: if it aint broke dont fix it ol son

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1)
almond37 [142]

Radio Barn : 200 + .15 x  x = the weekly sales

Woofer: 300 + .10x

set them equal to find when they are them same

200 + .15x = 300 + .10x

subtract .10x from both sides

200 +.15x -.10x = 300 + .10x-.10x

200 +.05x = 300

subtract 200 from each side

200+.05x -200 = 300-200

.05x = 100

divide each side by .05

.05x/.05 = 100/.05

x =2000

The 2 jobs pay the same when the weekly sales are 2000 dollars


2.  {x - 5 = -y}

{2y - 10 = -2x}

x-5 = -y

add 5 to each side

x = -y+5

multiply each side by -2

-2x = 2y -10

the 2 equations are the same, it has an infinite number of solutions

The system is dependent  since the 2 equations are the same line


3.  {2x = y - 7}

{4x - 2y - 14 = 0}

2x = y-7

subtract y-7 from each side

2x - (y-7) = 0

2x -y+7 =0

multiply by 2

4x -2y +14 =0

subtract the two equations

4x -2y +14 =0

4x - 2y - 14 = 0

---------------------------

               28 = 0

since this cannot happen   the lines will never cross ( parallel lines)

the system is inconsistent

5 0
3 years ago
Solve x2 - 8x - 9 = 0.<br><br> Rewrite the equation so that it is of the form <br> x2 + bx = c.
stira [4]
X^2 - 8x-9=0
D = b^2- 4*a*c = 64- 4* (-9) = 64+36=100 =10^2
X1 = (8-10)/2 = -1
X2= (8+10)/2= 9


7 0
3 years ago
How do the mathematical domain and reasonable domain compare
dexar [7]
---
weekly income y:
y = 10x
where x is number of hours worked per week
---
domain: x >= 0 hours
range: y >= 0 dollars
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
3 0
3 years ago
A number times six plus the same number times two
Travka [436]

Answer:

6x +2x

Step-by-step explanation:

when the number= x, you can just form the equation as per usual. 6x = a number times 6; 2x = a number times 2.

x is used bc the number is an unknown value. only x can be used bc it is stated the same number. hsing different alphabets such as y or z indicates the unknown value ia different.

6 0
3 years ago
Read 2 more answers
Jarrod helped his teachers pack textbooks into boxes for the summer. He packed 7 boxes of science textbooks with 14 books per bo
serious [3.7K]

Answer:

B.

Step-by-step explanation:

7 0
3 years ago
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