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ludmilkaskok [199]

4 years ago

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Mathematics

2 answers:

san4es73 [151]4 years ago

6 0

64 is the answer
8 x 8 = 64

Mnenie [13.5K]4 years ago

3 0

Answer:

I dont know the anwser

Step-by-step explanation:

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The radius of the base of a cylinder is increasing at a rate of 7 millimeters per hour. The height of the cylinder is fixed at 1

Ilya [14]

Answer:

The rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

Step-by-step explanation:

Given:

Rate of increase of base of radius of base of cylinder = 7 mm/hr

Height of cylinder = 1.5 mm

Radius at a certain instant = 12 mm

To find rate of change of volume of cylinder at that instant.

Solution:

Let $r$ represent radius of base of cylinder at any instant.

Rate of increase of base of radius of base of cylinder can be given as:

$\frac{dr}{dt}=7\ mm/hr$

Volume of cylinder is given by:

$V=\pi\ r^2h$

Finding derivative of the Volume with respect to time.

$\frac{dV}{dt}=\pi\ h\ 2r\frac{dr}{dt}$

Plugging in the values given:

$\frac{dV}{dt}=\pi\ (1.5)\ 2(12)(7)$

$\frac{dV}{dt}=252\pi$

Using $\pi=3.14$

$\frac{dV}{dt}=252(3.14)$

$\frac{dV}{dt}=791.28\ mm^3/hr$ (Answer)

Thus rate of change of the volume of the cylinder at that instant = $791.28\ mm^3/hr$

6 0

3 years ago

Z=x/y -3r make x the subject

satela [25.4K]

Z = x-y(3r)/y
z = x-y * 3r/y
Final answer: x = yz + 3yr

6 0

3 years ago

a rectangular garden is fenced on alls ides with 256 feet fencing. the garden is 8 feet longer than it is wide

pickupchik [31]

The length and width of the rectangular garden is estimated as-

Length = 68 ft
width= 60 ft

<h3>How to calculate perimeter of the rectangle?</h3>

A rectangle's perimeter is the total length and distance of its border across all sides. The perimeter of a rectangular box is a linear measurement that is expressed in meters, feet, cm, or yards. Let us first examine the two primary characteristics of a rectangle.

A rectangle's four angles are all 90°.
A rectangle's opposite sides are of equal length.

The perimeter of the rectangle is given as-

Perimeter = 2(length + width)

perimeter= 256

Let the width of the rectangle be x.

Length is 8 feet longer than width, Thus,

length = x+8

Substitute the values in the formula of perimeter;

256 = 2( x+ 8+ x)

256 = 2( 2x + 8)

128= 2x + 8

120= 2x

x=60

Thus, width = 60 ft.

Length = 60 + 8 = 68 ft.

Therefore, the length and width of the rectangular garden is estimated.

To know more about the area of the rectangle, here

brainly.com/question/2607596

#SPJ4

The complete question is -

A rectangular garden is fenced on all sides with 256 feet of fencing. The garden is 8feet longer than it is wide. Find the length and width of the garden.

6 0

2 years ago

Help me with this math question

murzikaleks [220]

Answer: A. In 2015 there will be more seagulls than chickadees.

Step-by-step explanation: if you look at the chart you can see the seagull population keeps growing and the chickadee population keeps decreasing.

7 0

3 years ago

In the problem 10-4=6, whats the correct term for the number 4

Igoryamba

Subtraction is a mathematical operation signified by the minus sign ( - ).
In this example : 10 - 4 = 6 ( or "ten minus four equals six" ).
Terms are:
Minuend - Subtrahend = Difference.
Answer:
The correct term for the number 4 is Subtrahend.

4 0

3 years ago