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3 years ago

a rectangular flower bed is √24 meters wide and √54 meters long. find the perimeter of the flower bed

Mathematics

1 answer:

NNADVOKAT [17]3 years ago

3 0

Answer:

Hey there!

The perimeter of the flower bed is $2\sqrt{24} +2\sqrt{54}$ meters.

This can be simplified, however (shown below)

$2\sqrt{4(6)}+2\sqrt{9(6)}$

$4\sqrt{6}+6\sqrt{6}$

$10\sqrt{6}$

The perimeter is $10\sqrt{6}$

Let me know if this helps :)

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The rules of a contest say there is a 1 out of 20 chance of winning a prize. 420 people enter the contest. Predict how many peop

lapo4ka [179]

Answer:

Step-by-step explanation:

1/20= x/420

Multiply both by 420

420/20=x

x=21

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4 years ago

The amounts of food waste generated in a region during two years were 37,500,000 tons and 30,400,000 tons. What was the total fo

galben [10]

You can change the form of the number to scientific notation before or after you do the addition. Here, we see the sum will be less than 100 million tons, so we can convert to scientific notation before we do the addition without requiring extra steps. The total waste is the sum of the amounts of waste in the two years.

... 3.75×10⁷ + 3.04×10⁷ = (3.75 +3.04)×10⁷ = 6.79×10⁷ . . . tons

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4 years ago

The area of a rectangle is 20. The length is 3 less than twice the width. Find the length and the width

SIZIF [17.4K]

The length of rectangle is 5 units and width is 4 units.

Step-by-step explanation:

Given,

Area of rectangle = 20

Width of rectangle = w

Length of rectangle = 2w-3

Area = Length * Width

$20=(2w-3)(w)\\20=2w^2-3w\\2w^2-3w-20=0$

Factorizing

$2w^2-8w+5w-20=0\\2w(w-4)+5(w-4)=0\\(2w+5)(w-4)=0$

Either;

2w+5=0 =>2w=-5

Or,

w-4 = 0 => w=4

As width cannot be negative, therefore,

width of rectangle = 4 units

length of rectangle = 2w-3 = 2(4)-3 = 8-3 = 5 units

The length of rectangle is 5 units and width is 4 units.

Keywords: area, rectangle

Learn more about rectangle at:

#LearnwithBrainly

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3 years ago

What is the approximate volume of the cylinder? Use 3.14 to approximate π.

EleoNora [17]

Answer:

The volume of a cylinder is 2462 feet³ .

Step-by-step explanation:

Formula

$Volume\ of\ a\ cylinder = \pi r^{2} h$

Where r is the radius and h is the height .

As given

Cylinder with height of 4 feet and radius of 14 feet.

h = 4 feet

r = 14 feet

$\pi = 3.14$

Put all the values in the formula

$Volume\ of\ a\ cylinder = 3.14\times 14\times 14\times 4$

= 2461.176 feet³

= 2462 feet³ (Approx)

Therefore the volume of a cylinder is 2462 feet³ .

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4 years ago

Is 45 a prime or composite number

Ilia_Sergeevich [38]

Answer:

45 is a composite number because, it can be multiplied by 1,5,9,15 and 45.

Step-by-step explanation:

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4 years ago