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LenaWriter [7]
3 years ago
13

What steps can be used to solve the equation a +8 = - 5/a​

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
6 0

times by a on both sides

a(a+8)= -5

expand brackets

a^2 + 8a = -5

minus 5 on both sides to set equal to 0

a^2 + 8a -5 = 0

use quadratic formula to get 2 solutions

-

\frac{ - (8) + or -  \sqrt{ {8}^{2} - 4(1)(5) } }{2(1)}

type into calculator. one solution from + other from -

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Answer: you bought 9 burgers and 16 tacos

Step-by-step explanation:

Let x represent the number of burgers that you bought.

Let y represent the number of tacos that you bought.

You buy a total of 25 burgers and tacos. It means that

x + y = 25

The burgers cost $3.50 each and the tacos cost $2.25 each. The total cost of the burgers and tacos that you bought is $67.50. It means that

3.5x + 2.25y = 67.5- - - - - - - - - - - - 1

Substituting x = 25 - y into 1, it becomes

3.5(25 - y) + 2.25y = 67.5

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y = - 20/ - 1.25

y = 16

x = 25 - y = 25 - 16

x = 9

5 0
3 years ago
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Answer:

6a^8/3a^4= (6/3)= 2

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2a^4

(6/3)(a^8/a^4)= 2a^4

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Step-by-step explanation:

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I am guessing that's it.

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see attachment

Step-by-step explanation:

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