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iren [92.7K]
1 year ago
10

What is the domain of the function y = StartRoot x EndRoot?

Mathematics
2 answers:
taurus [48]1 year ago
6 0

Answer: b 0 greater than or equal to X<Infinity

Step-by-step explanation:

kobusy [5.1K]1 year ago
3 0

Answer:

  0 less-than-or-equal-to x less-than infinity

Step-by-step explanation:

The square root function, y=√x, is defined for non-negative numbers. Its domain is ...

  0 ≤ x < ∞

_____

<em>Comment on the question</em>

This shows up again and again in domain problems, so is worth remembering. The value under the radical cannot be negative (but it can be zero).

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The distribution of the amount of a customer’s purchase at a convenience store is approximately normal, with mean $15.50 and sta
viktelen [127]

Answer:

0.42 is closest to the proportion of customer purchase amounts between $14.00 and $16.00

Step-by-step explanation:

Mean = \mu = 15.50

Standard deviation = \sigma = 1.72

We are supposed to find the proportion of customer purchase amounts between $14.00 and $16.00

P(14<x<16)

Formula : z=\frac{x-\mu}{\sigma}

At x = 14

z=\frac{14-15.50}{1.72}

z=-0.8720

Refer the  z table for p value

P(x<14)=0.1922

At x = 16

z=\frac{16-15.50}{1.72}

z=0.290

Refer the  z table for p value

P(x<16)=0.6141

P(14<x<16)=P(x<16)-P(x<14)=0.6141-0.1922=0.42

So, Option C is true

Hence 0.42 is closest to the proportion of customer purchase amounts between $14.00 and $16.00

4 0
1 year ago
What is the factored form of the polynomial 27x2y – 43xy2?
snow_tiger [21]
The answer is xy(27x-43y) have a great day :)
9 0
2 years ago
Read 2 more answers
Zoe the goat is tied by a rope to one corner of a 15 by 25 meter rectangular barn in the middle of a large, grassy field. Over w
atroni [7]

Answer: 78.55\ m^2

Step-by-step explanation:

Given

The goat is tied by a rope to one corner of a rectangular field with length of rope 10 m.

Zoe can graze in an area equal to quadrant of circle with radius 10 m

Area of grazing is

\Rightarrow \dfrac{1}{4}\times \pi r^2\\\\\Rightarrow \dfrac{\pi r^2}{4}\\\\\Rightarrow \dfrac{\pi \times 10^2}{4}=78.55\ m^2

6 0
1 year ago
Jack is 27 years older than Susan. In 5 years he will be 4 times as old as she is. Find the present ages of jack and Susan
riadik2000 [5.3K]
X - Jack's age
y - Susan's age

Jack is 27 years older than Susan.
x=y+27

In 5 years he will be 4 times as old as she is.
x+5=4(y+5)

The system of equations:
x=y+27 \\ x+5=4(y+5) \\ \\ \hbox{substitute y+27 for x in the 2nd equation:} \\ y+27+5=4(y+5) \\ y+32=4y+20 \\ y-4y=20-32 \\ -3y=-12 \\ y=\frac{-12}{-3} \\ y=4 \\ \\ x=y+27=4+27=31

Jack is 31 years old and Susan is 4 years old.
5 0
1 year ago
Kristin is swimming in the ocean and notices a coral reef below her. The angle of depression is 35∘ and the depth of the ocean,
LenaWriter [7]

Answer:

Distance: 435.9 ft


Step-by-step explanation:

This is a right triangle shown in the picture.

To solve for x, we can use trigonometry.

The 35° angle's opposite side is 250 ft and the hypotenuse of the triangle is x (what we are seeking to find).

The ratio that relates opposite and hypotenuse is sine.


<em>We know that,</em>

sin(angle)=\frac{opposite}{hypotenuse}

<em>Thus we can write:</em>

sin(35)=\frac{250}{x}

<em>Cross multiplying and solving for x gives us:</em>

sin(35)=\frac{250}{x}\\x=\frac{250}{sin(35)}\\x=435.9


Second answer choice is right: 435.9 ft

6 0
2 years ago
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