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Colt1911 [192]
2 years ago
5

Which is not equal to -5?

Mathematics
2 answers:
umka21 [38]2 years ago
5 0
I believe the answer would be c
svlad2 [7]2 years ago
3 0
The answer would be C
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Select whether each equation has no solution, one solution, or infinitely many solutions. No Solution One Solution Infinitely Ma
Lyrx [107]

Answer:

Step-by-step explanation:

7x + 14 = 14 x + 7

-7x = -7

x = 1 (one solution)

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5 x + 8 = 8 + 5 x

0 =0 (infinite solutions)

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9x = 9 x + 5 17

0 = 517 (no solution)

7 0
3 years ago
Solve the following system of equations by substitution. <br> 2x - y = 6<br> x + y = 6
m_a_m_a [10]

y=-x+6

2x-(-x+6)=6

3x=12

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5 0
3 years ago
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bulgar [2K]

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10 of 12<br> How far does an object travel if it travels at 30km/h for 2 hours
sammy [17]

Answer:

60km

Step-by-step explanation:

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3 0
2 years ago
A rectangular auditorium seats 1564 people. the number of seats in each row exceeds the number of rows by 1212. find the number
yanalaym [24]
<span>We can safely assume that 1212 is a misprint and the number of seats in a row exceeds the number of rows by 12. Let r = # of rows and s = # of seats in a row. Then, the total # of seats is T = r x s = r x ( r + 12), since s is 12 more than the # of rows. Then r x (r + 12) = 1564 or r**2 + 12*r - 1564 = 0, which is a quadratic equation. The general solution of a quadratic equation is: x = (-b +or- square-root( b**2 - 4ac))/2a In our case, a = 1, b = +12 and c = -1564, so x = (-12 +or- square-root( 12*12 - 4*1*(-1564) ) ) / 2*1 = (-12 +or- square-root( 144 + 6256 ) ) / 2 = (-12 +or- square-root( 6400 ) ) / 2 = (-12 +or- 80) / 2 = 34 or - 46 We ignore -46 since negative rows are not possible, and have: rows = 34 and seats per row = 34 + 12 = 46 as a check 34 x 46 = 1564 = total seats</span>
4 0
3 years ago
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