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3 years ago

Help please , sorry to ask again .

Mathematics

2 answers:

saul85 [17]3 years ago

5 0

It would be D because when you solve for the vertex, first it says in the parentheses to add 3 which is to move 3 to the left. Then you see outside the parentheses to subtract 2 which is to move down. This is how you know it is D

xz_007 [3.2K]3 years ago

4 0

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What is the additive inverse of non complex 9

svet-max [94.6K]

the additive inverse of non complex 9 is -9 .

Step-by-step explanation:

Complex number is said to be the sum of whole numbers and imaginary numbers.The additive inverse of the any number is the changing the sign of the number. That is instead –ve sign is positive and vice versa.

Additive Inverse of Complex Numbers:

Let take the complex numbers $Z = X + iy$ and its inverse be $Z^{-1} = a + ib$

Step 1: Now add the Z and Z-1, we get

$Z + Z^{-1} = (X + iy) + (a + ib) = 0$

Step 2: Combine Like term, we get

$(X + a) + i (y + b) = 0$

Step 3: By using zero product property, we can equating as

$X + a = 0$ and $i (y + b) = 0$

$X = -a$ and $y = -b$

Thus, the additive inverse of the complex numbers $X + iy = -X - iy$ .

Now, additive inverse of $9+0i$ = $-9-0i=-9$ .

Therefore , the additive inverse of non complex 9 is -9 .

4 0

4 years ago

1. 2x -1>6 Can someone solve this for me plzzzz

Feliz [49]

Answer:

solve it like there's and equals sign

Step-by-step explanation:

2x-1=6

+1+1

2x=7

2 2

x=3.5

then put the greater than sign back

x>3.5

6 0

3 years ago

What is the probability that 19 tosses of a fair coin will show 8 heads?

love history [14]

This can be solved by using the binomial distribution:
$P(8\ heads)=19C8\times(\frac{1}{2})^{8}\times(\frac{1}{2})^{11}=0.144$

8 0

4 years ago

Sally read that a recent survey found that 56% of all American adults own a smartphone. She asked her friend Alexandra what the

Crank

Answer:

This survey means that about 14 in every 25 adults in the survey had a smartphone.

Step-by-step explanation:

3 0

3 years ago

One question I need help with, I would really appreciate the help.

LuckyWell [14K]

At first, she had +2y in the upper and -5y in the lower.

She multiplied the upper by 5 . Then she had +10y in the upper.

She should multiply the lower by 2 . Then she'll have -10y
there. She'll be able to add the two equations, and the 'y's will
go away. She'll be left with a single equation with only 'x' in it,
and she can solve that one for the value of 'x'.

4 0

4 years ago