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alexira [117]
3 years ago
14

1 square kilometer is equal to 100 _____?

Mathematics
2 answers:
slavikrds [6]3 years ago
4 0
1 square kilometer is equal to 100 square hectometers :)
andre [41]3 years ago
3 0
1 square kilometer is equal to 100 hectare
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Jillian is trying to save water, so she reduces the size of her square grass lawn by 8 feet on each side the area of the smaller
horsena [70]

Answer: 20 feet by 20 feet.


Step-by-step explanation:

1. You know that x is the original measure of one side. Since it is a square, all its sides are equal.

2. Therefore, to solve the problem you only need to solve for x, as you can see below:

- You have that:

(a-b)^{2}=a^{2}-2ab+b^{2}

- Then, you obtain the following quadratic equation:

(x-8)^{2} =144\\x^{2}-2(x)(8)+8^{2}=144\\x^{2}-16x-80=0

- Apply the Quadratic formula to solve it:

x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}\\a=1\\b=-16\\c=-80

- Then, you obtain:

x_1=20\\x_2=-4

3. The dimensions cannot be negative, therefore, the answer is: 20 feet by 20 feet.


3 0
3 years ago
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Answer soon please, will give brainlest.
Vinil7 [7]

Answer:

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2.Range is 35,IQR is 14, MAD is 8

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5. Range is 62,IQR is16 , MAD is 13.08

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Step-by-step explanation:

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2 years ago
The width of a rectangle is 2 cm less than 8 times the length. The perimeter is 68 cm. What are the width and length of the rect
eduard

Answer:

length=4

width=30

Step-by-step explanation:

length=x

width=8x-2

(8x-2)*2+2x=68

16x-4+2x=68

18x=72

x=4 (Length)

4*8=32, 32-2=30(width)

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3 years ago
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Solve the formula A=12bh for h when A=90 and b=15. Write the answer in decimal form.
ohaa [14]

Answer:

Given,

A=90

b=15

A=12bh

Now,

Step-by-step explanation:

Put the given value in the formula

A=12bh

90=12*15*h

90=180h

90/180=h

Hence, h=0.5

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During a recent test in his Business Skills class, Lionel typed 207 words in 5 minutes .
maks197457 [2]
41.4 wph because if you divide 207 by 5 you get 41.4
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3 years ago
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