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Harlamova29_29 [7]
3 years ago
9

What is the domain of f?

Mathematics
2 answers:
zmey [24]3 years ago
8 0

Answer:

I hope C

Step-by-step explanation:

if I'm wrong please let me know

lorasvet [3.4K]3 years ago
7 0

Answer: C

Step-by-step explanation:

The domain is all real values of x such that x is less than or equal to zero.

If x is greater than  zero then all the positive numbers  will make the number in the square root negative and that will  become an imaginary number.

If x is zero  then the number in the number will be 0 and find the square root of 0 is possible.

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Answer:

11in

Step-by-step explanation:

a^2+b^2=c^2  when c is the hypotenuse

10^2+sqrt21^2=c^2

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3 years ago
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The area of a rectangle is 45 square inches. One dimension is 5 inches. What is the perimeter
professor190 [17]

Answer:

28 inches

Step-by-step explanation:

To begin, the area of a rectangle is base · height. Since we are given one of the sides already, you can make an equation to solve for the other value.

5 · x = 45

5x = 45

x = 9

A rectangle has two pairs of parallel sides, or in easier terms, two sets of sides that are the same. So, the perimeter is going to be two lengths plus two widths.

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6 0
2 years ago
1. A magazine advertise its $12 annual subscription price 70% off the newsstand price. What is the number of dollars per year a
ollegr [7]
1.  $17.14

  12   represents    70%
   x    represents    100%

rule of three

Price                 Percentage 
+12                         70-
  -x                          100+

x= \frac{12*100}{70} 
 \\  \\
x= \frac{12*10}{7} 
 \\  \\ x=17.14




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