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Vesna [10]
3 years ago
14

Which of the following equations is equal to -x^2-4?

Mathematics
2 answers:
Contact [7]3 years ago
6 0
The correct answer is b
Alenkinab [10]3 years ago
4 0
Definitely not D, because one of the x's needs to be negative, and the other should be positive so the x will end up negative when it is multiplied. 
I want to say the answer is C. (-x-2i) (x-2i)
Hope this helps :)
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2abc-3ab if a=2, b=-3, c=2
Elden [556K]
So a=2 since a is next to the first 2 it would be 2x2 which equals 4 next it’s B and B= -3 so -3x4 equals -12 and then c also equals 2 so it would be -12x2 and that equals -24. Moving on to the next part as I said a=2 so it would be 3x2 and that equals 6 next it’s B again so 6x -3 equals -18 so now take -24 and -18 and subtract them and you would get -6. Sorry if this answer is wrong I did my best...hope it helped.
5 0
3 years ago
1.) Find all the factors of 54.
jonny [76]

QUESTION 1.

The factors of 54  are all natural numbers that can divide 54 exactly.

The factors of 54 are: {1,2,3,6,9,18,27,54}

QUESTION 2

The prime factors of 54 are factors of 54 that are prime numbers.

The prime factors of 54 are {2,3}.

Product of prime factors of 54 is 2\times 3^3

QUESTION 3

All the factors of 60 are all positive integers that divide exactly into 60.

The factors of 60 are {1,2,3,4,5,6,10,12,15,20,30,60}

QUESTION 4

The prime factors of 60 are factors of 60 that are prime numbers.

The prime factors of 60 are {2,3,5}

The prime factorization of 60 is 2^2\times 3\times 5.

QUESTION 5

The factors of 30 are {1,2,3,5,6,10,15,30}

The different ways she can put the beads into the boxes are

1\times 30,

All 30 beads into one box or 1 bead in 30 boxes.

2\times 15,

2 beads each into 15 boxes or 15 beads each into 2 boxes

3\times 10,

3 beads each into 10 boxes or 10 beads each into 3 boxes

5\times 6,

6 beads each into 5 boxes or 5 beads each into 6 boxes

5 0
3 years ago
What is the height of the parallelogram?
sleet_krkn [62]

Answer:

6 cm

Step-by-step explanation:

The area of a parallelogram is found by

A = b*h

24 = 4*h

Divide each side by 4

24/4 = 4h/4

6 =h

4 0
3 years ago
Read 2 more answers
Evaluate for the given value of the variable y x 6 for y =2/3
yaroslaw [1]
2/3 * 6= 4 Or .66 * 6 = 3.999 etc Rounded Is 4
8 0
2 years ago
Find tan(30) (its a right triangle)
Travka [436]
Use the 30-60-90 triangle.

Tan is opposite over adjacent.

\frac{1}{ \sqrt{3} }
Square roots cannot be on the bottom.

\frac{1}{ \sqrt{3} }  \times  \frac{ \sqrt{3} }{ \sqrt{3} }
The bottom cancel out the square root bar.

Your answer is:

\frac{ \sqrt{3} }{3}
(It's best to memorize the 30-60-90 and the 45-45-90 triangles during trigonometry. It helps a lot.)

Hope this helps!

:)

8 0
2 years ago
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