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3 years ago

whats the difference between the square root of 25 the square root of negative 25 and the square root of plus minus 25?

2 answers:

8 0

The answer is 8 because 8 x 8 = 64 If you see these kinds of problem what is the square root of 25, 64, 36... means 5 x 5 = 25, 8 x 8 = 64, 6 x 6 = 36 If you see square root of 48. It would come out to be a decimal number.

harkovskaia [24]3 years ago

4 0

Answer:

one is a positive and one is a negative that's the difference but the square root of 25 is 5 because 5x5=25

Step-by-step explanation:

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Describe the x-values for which (a) f is increasing or decreasing, (b) f(x) > 0 and (c) f(x) < 0

Kryger [21]

(a) The function "f" is increasing for the x-values of [(-∞) < x ≤ 0] and [2 < x < ∞], while "f" is decreasing for the x-values of [0 < x ≤ 2].

(b) The function f(x) is greater than 0 at [(-1) < x < ∞], excluding the point (x = 2)

In the reference attachment attached along with the question statement, we are provided with a graph of a certain function "f",

And as per the question statement, we are required to determine the x-values for the following:

(a) for which "f" is increasing or decreasing,

(b) [f(x) > 0]

From the graph, it is very clear that, the slope is rising from [(-∞) < x ≤ 0] and [2 < x < ∞], while, declining from [0 < x ≤ 2] of the x-axis. Therefore,

(a) The function "f" is increasing for the x-values of [(-∞) < x ≤ 0] and [2 < x < ∞], while "f" is decreasing for the x-values of [0 < x ≤ 2].

(b) The function f(x) is greater than 0 at [(-1) < x < ∞], excluding the point (x = 2)

To learn more about x-values of increasing or decreasing functions, click on the link below.

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7 0

1 year ago

The function f(x) is shown below.

JulsSmile [24]

Answer:

$f(g(2)) = 2$

Step-by-step explanation:

Given

$x \to f(x)$

$-6 \to 1$

$-3 \to 2$

$g(x) = f^{-1}(x)$ --- inverse

Required

$f(g(2))$

For two functions f(x) and g(x) where f(x) and g(x)are inverse;

$f(g(x)) = x$

So, by comparison:

$f(g(2)) = 2$

4 0

3 years ago

g A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam. We ar

BaLLatris [955]

Answer:

The test statistic is $z = 1.25$

Step-by-step explanation:

We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%.

At the null hypothesis, we test if the proportion is 80%, that is:

$H_0: p = 0.8$