Solve the cube root of x^2-8=2

Mathematics

2 answers:

zalisa [80]3 years ago

8 0

Answer:

x= $\sqrt10$ - $\sqrt10$

Step-by-step explanation:

koban [17]3 years ago

5 0

Answer:

x= -4 or x= 4

Step-by-step explanation:

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List all of the elements of set A if A = {x|x is an integer and -6 ≤ x <0}

morpeh [17]

This is an example of a set defined by describing the property of its elements: every element in the set must be an integer, greater than or equal to -6, and less than zero (ecluded).

So, all the numbers that satisfy this requests are -6,-5,-4,-3,-2,-1, and the answer is thus b.

4 0

3 years ago

It is possible to score higher than 1600 on the combined mathematics and reading portions of the SAT, but scores 1600 and above

Citrus2011 [14]

Answer:

The proportion of scores reported as 1600 is 0.0032

Step-by-step explanation:

Let X be the score for 1 random person in SAT combining maths and reading. X has distribution approximately N(μ = 1011,σ = 216).

In order to make computations, we standarize X to obtain a random variable W with distribution approximately N(0,1)

$W = \frac{X-\mu}{\sigma} = \frac{X-1011}{216} \simeq N(0,1)$

The values of the cummulative distribution function of the standard Normal random variable, lets denote it $\phi$ are tabulated, you can find those values in the attached file. Now, we are ready to compute the probability of X being bigger than 1600