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Dafna11 [192]
2 years ago
8

What is the square root of –16? A. –8i B. –4i C. 4i D. 8i

Mathematics
2 answers:
hichkok12 [17]2 years ago
6 0

Answer:

C. 4i

Step-by-step explanation:

\sqrt{-16} = \sqrt{16} \sqrt{-1} (because \sqrt{ab} =\sqrt{a} \sqrt{b})

Since \sqrt{16}=4, and \sqrt{-1}=i, \sqrt{-16}=4i

lesya692 [45]2 years ago
5 0

Answer:

C. 4i

Step-by-step explanation:

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I need help with 12-14. One answer will get thanks. The highest amount of answers will get brainliest.
boyakko [2]
12. Make equation and plug in

13. Proportion

14. Finding a constant rate, and then manipulate




12. Where x is miles driven, and y is answer, and z is days
      19.95z+0.15x=y
      Plug in two values
      19.95 x 2 + 0.15 x 250 = y
      39.93+37.5 = y
      y=77.43

13. 5:2 as 175:x 
      5/2 = 175/x
      x = 70
      70+175=245

14. 260:5 = x:1
      260/5=x/1
      x = 52
      
      52:1 = y:9
      52/1 = y/9
      y = 468

I hope you understand the process.


7 0
2 years ago
For a parabola with a minimum point at (3,-1), determine the equation for the function's axis of symmetry
algol [13]

Answer:

x=3

(Do not write a character less than what I have written; 3 is not the answer but x=3 is the answer.)

Step-by-step explanation:

Parabolas have a axis of symmetry; this is the line they are symmetrical about.  

The line of symmetry will always go through the vertex.

Since your question says it is a function the line will be vertical and will be of the form x=a number.

The number is determine by the x-coordinate of the vertex.

I know the vertex of your problem is (3,-1) because it says that is the minimum point of the graph.  The vertex of a parabola will always be it's maximum (this parabola is open down) or minimum (this parabola is open up).

So the axis of symmetry is just:

x=3.

You must actually write x=3.

3 is not the answer.

x=3 is the answer.

Little note down here:

(If it had said the parabola wasn't a function, the axis of symmetry would have been horizontal and therefore of the form y=a number where the number was the y-coordinate of the vertex.)

8 0
3 years ago
Read 2 more answers
14. Which of the following is true about given APQR given in Figure 7.82 to the right? a. p²+q²=² b. q²+r²=p² c. (p+q)²=r² d. p²
Cloud [144]
Answer :
a. p²+q²=r²

According to the Pythagorean theorem :
p²+q²=r² ,because this is a right triangle and r is the length of the hypotenuse.
8 0
1 year ago
What is the domain for exponential functions?
Zina [86]

The domain for exponential functions will be all real numbers. Then the correct option is C.

<h3>What are domain and range?</h3>

The domain means all the possible values of x and the range means all the possible values of y.

The exponential function is given as,

Let a be the initial value and x be the power of the exponent function and b be the increasing factor. The exponent is given as

y = a(b)ˣ + c

Where c is the addition constant.

The domain for exponential functions will be all real numbers.

And the range of the exponential functions will depend upon the equation.

Then the correct option is C.

More about the domain and range link is given below.

brainly.com/question/12208715

#SPJ1

7 0
1 year ago
For the matrix a, find (if possible) a nonsingular matrix p such that p−1ap is diagonal.
Flura [38]
Sorry but can you please show like a diagram or something for me to answer it for you. Thank You

4 0
3 years ago
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