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4 years ago

Please help me!!! I can’t sleep until it’s done !!

Mathematics

1 answer:

xxTIMURxx [149]4 years ago

6 0

Answer:

Where’s the question, send it and let me try

Step-by-step explanation:

You might be interested in

You wish to have $2000 in 3 years to buy a fancy new stereo system. How much

Nitella [24]

Answer:

The correct answer is - $1977.7913.

Step-by-step explanation:

Given:

Maturity value = 2000

time = 3 years

rate = 6% compounded quarterly

Solution:

If A is the Maturity Value, P is the Principal Amount, r is the Rate of Return, n is the Frequency And t is the Time in Year then the Formula for Compound Interest would be -

A = P(1+r/n)^nt

Putting the given values in formula,

2000 = P*(1 + (0.06/4))^(3*4)

P = 2000/(1 + (0.06/4))^(3*4)

Thus,

P = $1977.7913

7 0

3 years ago

Hey yall please help me I suffer from short time memory loss and it's hard for me to focus and remember Find the distance betwee

podryga [215]

Answer:

The distance between 2 points on a graph is given as:

root over of ((x2-x1)^2 + (y2-y1)^2)

using this formula we have,

root over of ((5-(-3))^2 + (1-(-4))^2

=root over of (64+25)= 9.43

Ans: the distance between A and b is 9.43 units.

3 0

3 years ago

Mary is twice as old as jean and seven years older than hazel. The sum of their ages is 53. How old is each person?

weeeeeb [17]

Answer:

Step-by-step explanation:

M = 2J

M = H + 7

M + J + H = 53

Then combine first two equations and solve in terms of J:

2J = H + 7 --> H = 2J - 7

Substitute for H & M in last equation:

2J + J + 2J - 7 = 53

5J - 7 = 53

5J = 60

J = 12

Then plug J into other equations:

M = 24

J =12

H = 17

4 0

4 years ago

Which ratio is equivalent to the ratio 33:39?

Mandarinka [93]

Answer:

11:13

Step-by-step explanation:

7 0

3 years ago

A closed-top cylindrical container is to have a volume of 250 in2. 250 , in squared , . What dimensions (radius and height) will

miv72 [106K]

Answer:

radius r = 3.414 in

height h = 6.8275 in

Step-by-step explanation:

From the information given:

The volume V of a closed cylindrical container with its surface area can be expressed as follows:

$V = \pi r^2 h$

$S = 2 \pi rh + 2 \pi r^2$

Given that Volume V = 250 in²

Then;

$\pi r^2h = 250 \\ \\ h = \dfrac{250}{\pi r^2}$

We also know that the cylinder contains top and bottom circle and the area is equal to πr²,

Hence, if we incorporate these areas in the total area of the cylinder.

Then;

$S = 2\pi r h + 2 \pi r ^2$

$S = 2\pi r (\dfrac{250}{\pi r^2}) + 2 \pi r ^2$

$S = \dfrac{500}{r} + 2 \pi r ^2$

To find the minimum by determining the radius at which the surface by using the first-order derivative.

$S' = 0$

$- \dfrac{500}{r^2} + 4 \pi r = 0$

$r^3 = \dfrac{500 }{4 \pi}$

$r^3 = 39.789$

$r =\sqrt[3]{39.789}$

r = 3.414 in

Using the second-order derivative of S to determine the area is maximum or minimum at the radius, we have:

$S'' = - \dfrac{500(-2)}{r^3}+ 4 \pi$

$S'' = \dfrac{1000}{r^3}+ 4 \pi$

Thus, the minimum surface area will be used because the second-derivative shows that the area function is higher than zero.

Thus, from $h = \dfrac{250}{\pi r^2}$

$h = \dfrac{250}{\pi (3.414) ^2}$

h = 6.8275 in

7 0

3 years ago