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3 years ago

List domain and Range in interval notation, then decide if it is a function or not.

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

5 0

Domain are for x-values so [0,3] and range are y-values so [2,-2]. It is not a function because there are multiple x-values for y-values. The only thing I am not sure about is whether to use brackets [ ] and/or parentheses ( ) because the graph does not use circles. Hope this helped!

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Find the surface area in terms of pl. 3cm 4 cm A. 12π B. 16.5π C. 4.5π D. 22π

Lera25 [3.4K]

(B) 16.5π

Explanation:

The shape given is a cylinder

The height, h of the cylinder = 4cm

Diameter of the cylinder = 3cm

Radius, r = 1.5 cm

Surface area of cylinder, A = ?

We know:

Surface area of cylinder = 2πrh + 2πr²

$A = 2\pi r (h+r)\\\\A = 2 X \pi X 1.5 ( 4 + 1.5)\\\\A = 16.5\pi$

Therefore, the surface area would be 16.5π

8 0

3 years ago

PLEAZZZZZZEE SOLVE FOR ME find the holes of x^2 +x-12 /x^2-4 thank you so much

kow [346]

Factoring the top and bottom of the fraction we get

(x + 4)(x - 3
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(x + 4) (x - 4)

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3 years ago

Arrange the rational numbers in order from greatest to least. Select each rational number and drag up or down to change the posi

Pani-rosa [81]

Answer:

1/4, 0.4, 0.4/w line, and 4% I think

Step-by-step explanation:

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3 years ago

Consider the e-billing case. The mean and the standard deviation of the sample of n = 65 payment times are xbar= 18.4730 and s =

Travka [436]

Answer: The null and the alternative hypotheses are given below:

$H_{0}:\mu=18.6$

$H_{a}:\mu$

Under null hypothesis, the test statistic is:

$z=\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

$=\frac{18.4730-18.6}{\frac{3.9045}{\sqrt{65}} }$

$=-0.26$

$\therefore z=-0.26$

Now we have to find the left tailed critical value at 0.01 significance level using the standard normal table.

The critical value is:

$z_{critical}=-2.33$

Since the test statistic is -0.26 lies in acceptance region because the critical region is beyond -2.33, therefore, we fail to reject the null hypothesis.

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3 years ago

Describe the graph of the following inequality: 2x - 5y ≤ 6

PSYCHO15rus [73]

Solid and shaded above the line, because ≤ means less or equal to but if you simplify the problem ≤ flips to > witch means equal to or greater than and if it is equal to it is a solid line and if it is greater than the shaded area is above the line

7 0

3 years ago