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2 years ago

Identify the domain and range for the following. Also, determine if it represents a function.

Mathematics

1 answer:

liq [111]2 years ago

4 0

Answer:

Option D

Step-by-step explanation:

The domain is all the x-values

The range is all the y-values

The following is a function because there is one unique output for every input.

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A. 2x+5=23 B. x+2+5=23 C. x+x+5=23 D. 5x+2=23

storchak [24]

Answer:

Step-by-step explanation:

lucky guess

6 0

3 years ago

Read 2 more answers

Please help me with this question

Daniel [21]

Answer:

1/2

Step-by-step explanation:

if you look at a unit circle, sin(\pi/6) is $\sqrt{3}/2$ so cos of (\pi/6/2) would be \pi/3, and cos of (\pi/3) is 1/2

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3 years ago

Our environment is very sensitive to the amount of ozone in the upper atmosphere. The level of ozone normally found is 6.2 parts

vovikov84 [41]

Answer:

H0 : μ = 6.2

H1 : μ ≠ 6.2

Step-by-step explanation:

Population mean, μ = 6.2 ppm

The hypothesis :

Null, H0 : = The mean level of Ozone is normally 6.2 ppm ;

The alternative hypothesis is the researcher's claim that the current ozone level is not normal, that is it may be higher or lower than the normal value in ppm

Hence, the hypothesis could be written as :

H0 : μ = 6.2

H1 : μ ≠ 6.2

5 0

3 years ago

Ashley brought 7/8 gallon of lemonade to the party.

Misha Larkins [42]

7/8 - 2/3 = 5/24 is the correct answer of the question 

3 0

3 years ago

Read 2 more answers

An arch is in the shape of a parabola. It has a span of 100 feet and a maximum height of 25 ft.

faltersainse [42]

Answer:

$y=-\frac{1}{100}(x-50)^2+25$

the height of the arch 10 feet from the center is 24 feet

Step-by-step explanation:

An arch is in the shape of a parabola. It has a span of 100 feet, the vertex lies at the center 50 and the maximum height of 25 ft.

Vertex at (50,25)

vertex form of the equation is

$y=a(x-h)^2+k$ , (h,k) is the center

$y=a(x-50)^2+25$

the parabola starts at (0,0) that is (x,y)

$0=a(0-50)^2+25$

subtract 25 from both sides

$-25=a(-50)^2$

$-25=a(2500)$

divide both sides by 2500

$a=-\frac{1}{100}$

$y=-\frac{1}{100}(x-50)^2+25$

the height of the arch 10 feet from the center.

center is at 50, 10 feet from the center so x=40 and x=60

$y=-\frac{1}{100}(40-50)^2+25$

y=24

the height of the arch 10 feet from the center is 24 feet

4 0

3 years ago