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riadik2000 [5.3K]
3 years ago
11

Right or not ???????????!!!?????????

Mathematics
1 answer:
allsm [11]3 years ago
4 0

Not right.

-16 - (-4)

= -16 + 4 = -12 . . . . matches the 2nd selection

_____

Subtraction is the same as adding the opposite: -(-4) = +(+4) = +4.

You might be interested in
-1/2x=-10<br><img src="https://tex.z-dn.net/?f=%20-%201%20%5Cdiv%202x%20%3D%20%20-%2010%20" id="TexFormula1" title=" - 1 \div 2x
Triss [41]

Answer:

x= 1/20

Step-by-step explanation:

-1/2x = -10

multiply by 2x on each side

2x(-1/2x) = -10*2x

-1 = -20x

divide by -20

-1/-20 = -20x/-20

1/20 =x

5 0
2 years ago
Read 2 more answers
If a polynomial function f(x) has roots –8, 1, and 6i, what must also be a root of f(x)? A. –6
anyanavicka [17]

Answer:

-6i

Step-by-step explanation:

Complex roots always come in pairs, and those pairs are made up of a positive and a negative version. If 6i is a root, then its negative value, -6i, is also a root.

If you want to know the reasoning, it's along these lines: to even get a complex/imaginary root, we take the square root of a negative value. When you take the square root of any value, your answer is always "plus or minus" whatever the value is. The same thing holds for complex roots. In this case, the polynomial function likely factored to f(x) = (x+8)(x-1)(x^2+36). To solve that equation, you set every factor equal to zero and solve for the x's.

x + 8 = 0

x = -8

x - 1 = 0

x = 1

x^2 + 36 = 0

x^2 = -36 ... take the square root of both sides to get x alone

x = √-36 ... square root of an imaginary number produces the usual square root and an "i"

x = ±6i

6 0
3 years ago
Read 2 more answers
Solve both! For x<br><br> |X + 2| &gt; 5<br><br><br><br> |X + 2| &lt; 5
NISA [10]

Answer:

Your Answer is ...

x > 3 or x < -7

Step-by-step explanation:

1.  x > 3 worked out

|X + 2| > 5

Solve absolute Value

|X + 2| > 5

We know either |X + 2| > 5 or x + 2 < - 5

_________________________________

x + 2 > 5\\x + 2 - 2 > 5 - 2 (Subtract ~2~ from~Both~sides)\\ x >3

2. x < -7 Worked out

x + 2 < - 5\\x+2-2>5-2 (Subtract~2~from~Both~sides)\\x

Hope this Helps!

Take Care!

-Jay-

4 0
3 years ago
60 plus 18% ill give brainliest :)
aksik [14]

Answer:

70.8

Step-by-step explanation:

YOU'RE WELCOME

8 0
3 years ago
What is the measure of x?
tankabanditka [31]

Answer:

33

Step-by-step explanation:

half of 67 i believe its correct

3 0
2 years ago
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