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2 years ago

X^2 + x - 56 = 0 Solve for x

Mathematics

2 answers:

goldfiish [28.3K]2 years ago

7 0

Answer:

x= 7, -8

Step-by-step explanation:

move all terms to the left side and set equal to 0. then set each factor equal to 0

Hope this helps!!!

NISA [10]2 years ago

4 0

Answer: x = 7 or x = -8

x² + x - 56 = 0

⇔ x² + 8x - 7x - 56 = 0

⇔ x(x + 8) - 7(x + 8) = 0

⇔ (x - 7)(x + 8) = 0

⇔ x - 7 = 0

or x + 8 = 0

⇔ x = 7 or x = -8

Step-by-step explanation:

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3 years ago

The sum of 20.7 and a number is 50.5. Which equation could you use to solve the problem? What should you do to each side of the

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3 years ago

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The probability of winning a certain lottery is 1/77076 for people who play 908 times find the mean number of wins

Alex73 [517]

The mean is 0.0118 approximately. So option C is correct

<h3><u>Solution:</u></h3>

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$\text { The probability of winning a lottery }=\frac{1}{77076}$

Assume that a procedure yields a binomial distribution with a trial repeated n times.

Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial.

$n=908, \text { probability } \mathrm{p}=\frac{1}{77076}$

$\text { Then, binomial mean }=n \times p$

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3 years ago

Charlie was carrying around the steps to solve Square root of 6x plus 4 = 8. On his way through the Math Factory, Charlie droppe

fomenos

Answer: Order will be F,D,C and Fourth Option is correct and x = 10

Step-by-step explanation:

Since we have given that

$\sqrt{6x+4}=8$

We first transpose the square root to the right , so it becomes square of 8,i.e.

$6x+4=8^2\\\\6x+4=64$

Now, transpose 4 to the right so it will get subtract from 64 i.e.

$6x=64-4\\\\6x=60$

Since 6 is multiplied to x on tranposing it will get divided by 60 i.e.

$x=\frac{60}{6}\\\\x=10$

Hence, on simplification, we get x=10.

Hence , the order is F,D,C.

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3 years ago

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