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2 years ago

A metallic cube with side 15 cm is to be melted. Its reformed volume will be equal to its current volume. Find

Mathematics

1 answer:

AlekseyPX2 years ago

4 0

V of cube = a cubed
15 to the third power would give u a volume of 3,375cm cubed

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Bottles of water sell for $1.50 each.

anyanavicka [17]

Y axis is 1.5 and x axis is 1 and make them meet in the middle and add and repeat the process

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3 years ago

Why equals 2X plus 7Y equals 5X +4 graph the answer

nevsk [136]

You can graph the answer on cymath.com

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2 years ago

A rectangle's length is twice its width. if the perimeter is 66 cm find the width of the rectangle

Lesechka [4]

Perimeter = 2L + 2W

Let x = width and let 2x = length

Perimeter = 66

2x + 2(2x) = 66

2x + 4x = 66 --> 6x = 66 --> x = 66/6 --> x = 11

The width of the rectangle is 11 cm.

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3 years ago

Write one digit on each side of 23 to make a four digit multiple of 72. How many different solutions does this problem have?

user100 [1]

Answer:

This problem has two possible solutions.

2232

7236

Step-by-step explanation:

To be divisible by 72, a number has:

To be divisible by both 8 and 9 at the same time.

It is divisible by 8 if it's last two digits are divisible by 4.

It is divisible by 9 it the sum of it's digits is a number divisible by 9.

a23b

3b must be divisible by 4. In the thirties, the numbers that are divisible by 4 are 32 and 36. So b = 2 or b = 6.

a232

2 + 3 + 2 = 7

The higest possible value of a is 9 and the lowest is 1.

Between 8 and 16, only 9 is divisible by 9. So a = 2.

a = 2, b = 2 is one of the solutions.

a236

2 + 3 + 6 = 11

The higest possible value of a is 9 and the lowest is 1.

Between 12 and 20, only 18 is divisible by 9. So we need a = 7

5 0

3 years ago

Aki's Bicycle Designs has determined that when x hundred bicycles are built, the average cost per bicycle is given by C(x)equa

Alenkinab [10]

Answer:

20 Bicycles

Step-by-step explanation:

The function for the average cost,C(x) [in hundred of dollars] per bicycle whenever x hundred bicycles are built is given as:

$C(x)=0.5x^2-0.2x+6.756$

The minimum value of C occurs at the axis of symmetry.

Axis of Symmetry, $x=-\frac{b}{2a}$

Comparing with the standard form of a quadratic equation $ax^2+bx+c=0$

a=0.5, b=-0.2

$x=-\frac{(-0.2)}{2*0.5}\\x=0.2$

x=0.2 Hundreds =0.2 X 100 =20

When Aki's Bicycle Designs produces 20 Bicycles, the cost is minimized.

5 0

3 years ago