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4 years ago

Which of the following situations best represents a random sample?

Mathematics

1 answer:

PilotLPTM [1.2K]4 years ago

3 0

Answer:

PLZZZZZZZ GIVE ME BRAINLIEST

Step-by-step explanation:

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Find the slope of the line represented in

Gwar [14]

Answer:

Step-by-step explanation:

y2-y1 divided by x2-x2. you can pick any values as long as they are consecutive.

8 0

3 years ago

Read 2 more answers

X -2, -1, 0, 1, 2<br> y-<br><br> Complete the table for y=-3x+5

fomenos

Y- 11, 8, 5, 2, -1

Just replace the x in the equation, with the numbers of the x you already have.

5 0

4 years ago

Calculate the time necessary to achieve the investment goal. Give your answer to the nearest day. Use a 365-day year. $2,320 at

Bumek [7]

Answer:

5yrs or 1825 days

Step-by-step explanation:

Given the total amount of the investment after n-days at 9% is $2,320 and the principal amount invested is $1,600

-Let P be the principal amount, A be the total amount of the investment.

-We calculate the number of days using simple interest formula.

#Calculate the total interest earned on the investment:

$I=A-P, \\\\I=2320-1600\\\\=720$

Simple interest is calculated using the formula:

$I=PRT, T=time, R=interest \ rate , P= Prncipal, I=720\\\\720=1600\times \frac{9}{100}\times T\\\\\frac{720}{144}=T\\\\T=5\ years=5\times 365\ days= 1825\ days$

Hence, it takes 1,825 days to achieve your investment goals

6 0

3 years ago

(-9z - 8) - (4z - 7)

inn [45]

The answer is -13z - 1

7 0

3 years ago

A cylindrical container that has a capacity of 4000 cubic centimeters is to be produced. The top and bottom of the container are

Aleks04 [339]

Answer:

the optimal size of the cylinder to minimise cost is

radius= R = 7.985 cm ≈ 8 cm

height =h = 19.969 cm ≈ 20 cm

Step-by-step explanation:

Since the cost function is

C= 2*π*R²*c₁+ 2*π*R*h*c₂

where R = cylinder radius , h = height ,c₁= cost of the top material ,c₂ = cost f the side material

The volume of the cylinder is:

V=π*h*R² → h= V/(π* R²)

then

C= 2*π*R²*c₁ + 2*π*R* V/(π* R²) *c₂

C= 2*π*R²*c₁ + 2*π*c₂* V/(π* R) *c₂

the value of h that minimises the cost can be found through dC/dR=0 . Thus

dC/dR= 4*π*R*c₁ - 2*π*c₂* V/(π* R²) = 0

2*R*c₁ - c₂* V/(π* R²) = 0

2*R³*c₁ = c₂* V/π

R = ∛[(c₂/c₁)* (V/(2*π)]

replacing values

R = ∛[(c₂/c₁)* (V/(2*π)] = ∛ [($0.40/$0.50)*4000 cm³/(2*π)] = 7.985 cm

R = 7.985 cm

and the height would be

h= V/(π* R²) = 4000 cm³/[π*(7.985 cm)²]] = 19.969 cm

h= 19.969 cm

6 0

4 years ago