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nalin [4]
3 years ago
9

What's the perimeter of a regular heptagon if one side measures 3 inches? A. 10 in. B. 11 in. C. 21 in. D. 18 in.

Mathematics
2 answers:
Orlov [11]3 years ago
8 0
I'd go with C because its basically 3 times 7 which is 21.
sergejj [24]3 years ago
4 0

Answer:

c. 21

Step-by-step explanation:


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3 years ago
F(z) = (z - 5)(2x + 7) (73 = 3) has zeros at x = -3.5, x=3/7 , x=5 What is the sign of f on the interval 3/7 &lt; x &lt;5?
Gwar [14]
<h3>Answer:     Negative</h3>

======================================================

Explanation:

3/7 = 0.42857 approximately

Pick a number between that value and 5, not including either endpoint. Let's say we pick x = 2

Plug x = 2 into the f(x) function

f(x) = (x - 5)(2x + 7)(7x-3)

f(2) = (2 - 5)(2*2 + 7)(7*2-3)

f(2) = (2 - 5)(4 + 7)(14-3)

f(2) = (-3)(11)(11)

f(2) = -363

The actual result doesn't matter. All we're after is whether the result is positive or negative. We see the result is negative. This means f(x) is negative when 3/7 < x < 5. The f(x) curve is below the x axis on this interval.

3 0
3 years ago
What is the inverse one to one function of f(x) = square root of x-2???
alexira [117]
f(x) = \sqrt{x - 2} \\y = \sqrt{x - 2} \\y^{2} = (\sqrt{x - 2})^{2} \\y^{2} = x - 2 \\x^{2} = y - 2 \\x^{2} + 2 = y \\x^{2} + 2 = f^{-1}(x)
6 0
3 years ago
Uhh I’m confused lol
il63 [147K]

Answer:

G

Step-by-step explanation:

6 0
3 years ago
Which expression is equivalent to negative one half open parentheses three minus two fifths close parentheses?
kondor19780726 [428]
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3 years ago
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