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kipiarov [429]
3 years ago
12

1 2 3 4 5 6 7 8 9 10 TIME REMAINING 57:13 A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts

this rate to millimeters per day. Which expression, when evaluated, results in the correct units and numerical value?
Mathematics
1 answer:
jok3333 [9.3K]3 years ago
3 0

\dfrac{4 \textrm{ cm}}{\textrm{year}} \times \dfrac{\textrm{year}}{365 \textrm{ days}} \times \dfrac{10\textrm{ mm}}{\textrm{cm}} = \dfrac{8}{73} \approx 0.1 \textrm{ mm per day}

Answer. About 0.1 mm/day


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Select the answer choice that equals the given expression. 8^-3 x 8^-2 x ^5
Alexus [3.1K]

Answer:

B) 1

Step-by-step explanation:

Given:

8^{-3}\times 8^{-2}\times8^5

We need to solve the given expression.

Now We know that when base of the exponents then the law of indices applied for the same.

Now According to Law of Indices.

x^a\times x^b = x^{a+b}

On Solving the above expression we get;

8^{-3+(-2)+5}\\\\8^{-3-2+5}\\\\8^{-5+5}\\\\8^0\\\\\textrm{Now Again by law of indices;}\\\\a^0 =1\\\\Hence\ 8^0 = 1

Hence The Simplified form of given expression is 1.

5 0
3 years ago
- A rectangle has a width of 4.2 m and an area of 37.8 m2. Find the length and the
eimsori [14]

Answer: option c

length = 9m

Perimeter = 26.4m

Step-by-step explanation:

A rectangle has a width of 4.2 m and an area of 37.8 m^2

We want yo determine the length of the rectangle and the perimeter of the rectangle.

The perimeter of the rectangle is the distance round the shape. Let the width of the triangle be w.

The perimeter of the rectangle would be expressed as Length + width + length + width. This becomes

2(length +width). So the perimeter of the given rectangle is

2(length + 4.2) but the area is given as 37.8 m^2. Area of a rectangle is length × width. It becomes

37.8= length × 4.2

Length = 37.8/4.2 = 9m

Therefore, the perimeter is

2(length + 4.2) = 2(9+4.2)

Perimeter = 2× 13.2 = 26.4m

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3 years ago
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I don’t see an attachment
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2 years ago
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Katherine earned $15 an hour, divide $105 by the seven hours she worked
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eduard

Answer:

16

Step-by-step explanation:

10+6=16

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