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meriva
3 years ago
14

Domain of (1)/(x^(2)+5x)

Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
6 0
The answer could be, (5,0)
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X &gt; 2 and x &lt; 7<br><br>I don't understand
valentinak56 [21]
It means that x value is between 2 to 7 ( more than 2, but less than 7)
In notation, 2 < x < 7  or (2,7).
3 0
3 years ago
A rainbow is an arc of colors that is visible in the sky, caused by the refraction and dispersion of light after rain or other w
Masteriza [31]

Answer:

Red, orange, yellow, green, cyan, blue and purple.

Step-by-step explanation:

The rainbow is a colorful visual and meteorological phenomenon, in which the range of colors that compose the visible light in the sky appears. The phenomenon occurs when the sun's rays fall on raindrops in the Earth's atmosphere and is an example of refraction, after reflection. Each color is refracted at a different angle inside the droplets (which act like small prisms), it undergoes a different deflection and so the visible white light is analyzed in the different colors that compose it.

7 0
2 years ago
What are the coordinates of the terminal point determined by θ=7π/6?
erma4kov [3.2K]
Cos ( theta ) = cos 7π/6 = -√3/2
sin ( Theta ) = sin 7π/6 = -1/2
Coordinates of the terminal points are: ( -√3/2,  -1/2 ) 
6 0
3 years ago
A poll of 1068 adult Americans reveals that 48% of the voters surveyed prefer the Democratic candidate for the presidency. At a
zubka84 [21]

Answer:

Z = -1.333

P-value  = 0.09176

Decision Rule: Reject H_o if ∝  is greater than the P-value

Conclusion: Since P-value is >  the level of significance ∝, we fail to reject the null hypothesis, therefore there is insufficient evidence to conclude that at least half of all voters prefer the Democrat.

Step-by-step explanation:

Given that:

The sample size of the poll = 1068

The proportion of voters that preferred Democratic candidate is \hat p = 0.48

To test the claim that at least half of all voters prefer the Democrat, i.e 1/2 = 0.5

The null hypothesis and the alternative hypothesis can be computed as:

H_o : p \geq 0.50

H_1 : p < 0.50

Using the Z test statistics which can be expressed by the formula:

Z = \dfrac{\hat p - p}{\dfrac{\sqrt{p(1-p) }}{n}}}

Z = \dfrac{0.48 - 0.5}{\dfrac{\sqrt{0.5(1-0.5) }}{1068}}}

Z = \dfrac{-0.02}{\sqrt{\dfrac{{0.5(0.5) }}{1068}}}

Z = \dfrac{-0.02}{\sqrt{\dfrac{{0.25}}{1068}}}

Z = \dfrac{-0.02}{0.015}

Z = -1.333

P-value = P(Z< -1.33)

From z tables,

P-value  = 0.09176

The level of significance ∝ = 0.05

Decision Rule: Reject H_o if ∝  is greater than the P-value

Conclusion: Since P-value is >  the level of significance ∝, we fail to reject the null hypothesis, therefore there is insufficient evidence to conclude that at least half of all voters prefer the Democrat.

5 0
2 years ago
What is the value of x.<br> 35<br> 50<br> Not enough info.<br> 95
lawyer [7]

Answer:

50

Step-by-step explanation:

Image result for triangular coordinates definition

Image result for triangular coordinates definition

With the triangular coordinate system, you can visualize the relationships between the components in a three-component mixture. ... Any points along the edges of the triangle represent blends where one of the components is absent.

7 0
2 years ago
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