The correct option is: x = 1

Explanation:
Although there are two solutions to the equation are given: -8 and +1, the true solution will be the one that satisfies the given equation. If we put "-8" into the equation $log_2(x) + log_2(x+7) = 3$ , the equation will not satisfy as the log of the negative number does not exist. If we put "+1" in the above equation, we would get "3" as an answer, meaning the true solution exists.

Hence the correct option is "x=1"

4 0

3 years ago

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Jenny wants to buy the newest music from her local store. she buys 3 CDs that cost $ 36. If she gives the cashier a 50 dollar bi

Natalija [7]

Answer:

$14 will be her change

Step-by-step explanation:

1. subtract the $36 from the 50 dollar bill

$50-$36= 14

8 0

3 years ago

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Write a quadratic equation using the roots 5 and -1/4

attashe74 [19]

Well since we know the roots are x = 5 and x = -1/4. We can convert it into an equation and make it equal to 0.

Simply work backwards instead of solving for x. For x = 5, it would be x - 5 = 0, because if you solve for x it will be 5.

Same thing for x = -1/4, the equation would be x + 1/4 = 0.

(X-5)(x+1/4) = 0.

Now multiply the 2 binomials together to get the quadratic. To get rid of the fraction after obtaining the quadratic multiply by 4 for each term in the quadratic.

7 0

3 years ago

Hi can you plzzzz help me

Arlecino [84]

Answer:

Step-by-step explanation:

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3 years ago

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