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Ad libitum [116K]
3 years ago
6

A wooded piece of land is 68 3/4 acres. If 4/5 of this land is cleared for development, how many acres of wooded land will remai

n?​
Mathematics
1 answer:
kari74 [83]3 years ago
6 0

Answer:

13.75 or 13 3/4 acres

Step-by-step explanation:

68.75*0.2 = 13.75

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A set has 62 proper subsets how many elements has it for?<br>​
MrRissso [65]

Answer:

6

Step-by-step explanation:

Total number of subsets is given as

{2}^{n}

But the subset of a set consists of the proper subsets, an empty set and the set itself.

Total number of subsets are 64

Therefore,

{2}^{n}  = 64

{2}^{n}  =  {2}^{6}

Comparing both sides

n = 6

5 0
2 years ago
Write the inverse function for the function, ƒ(x) =1/2x + 4. Then, find the value of ƒ^ -1(4). Type your answers in the box.
Kipish [7]

Answer:

f⁻¹(x) = 2x - 8

f⁻¹(4) = 2 × 4 - 8

f⁻¹(4) = 0

Step-by-step explanation:

f(x) = \frac{1}{2} x + 4\\x = \frac{1}{2} f^{-1}(x) + 4\\x - 4 = \frac{1}{2} f^{-1}(x)\\2x - 8 = f^{-1}(x)\\f^{-1}(x) = 2x - 8

Let's test it

f^{-1}(f(x)) = 2(f(x)) - 8\\f^{-1}(f(x)) = 2( \frac{1}{2}x + 4) - 8\\f^{-1}(f(x)) = \frac{2}{2}x + 8 - 8\\f^{-1}(f(x)) = x

So we do indeed have the inverse function, so using that we can plug in the values requested:

f⁻¹(x) = 2x - 8

f⁻¹(4) = 2 × 4 - 8

f⁻¹(4) = 0

4 0
3 years ago
Please help its timed​
Anika [276]

Answer:

no solutions

Step-by-step explanation:

3 0
2 years ago
What is the equation of the line that passes through the point (8,1) and has a slope of 3/4
iris [78.8K]

Answer:

believe the answer is

y =  \frac{3}{4} x - 5

Step-by-step explanation:

Hope this helps!

3 0
2 years ago
Mrs. Lowe, Mrs. Thomson and Ms. Rebuck went out to a restaurant for lunch. They each ordered a meal with a drink. Their total bi
rjkz [21]

Answer:

12.5

Step-by-step explanation:

use a calculator and don't waste your coins

6 0
2 years ago
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