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zhannawk [14.2K]
2 years ago
9

PLEASE HELP!! THIS IS MY LAST QUESTION PLEASE!! (Answeer all the problems)

Mathematics
2 answers:
forsale [732]2 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

Given a complex number in standard form a ± bi , then

the conjugate is a ∓ bi

That is the real part is unchanged while the sign of the imaginary part changes.

(22)

The conjugate of \sqrt{7} is - \sqrt{7} ( treat the real part as 0 )

(23)

The conjugate of - 6i is + 6i

(24)

The conjugate of - 2 + i is - 2 - i

Olegator [25]2 years ago
4 0

Answer:

49, 1.5i, 0.25 + 0.5i

Step-by-step explanation:

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aliya0001 [1]

Answer: 1

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8 0
3 years ago
Which of the following is a solution of x2 + 2x + 4?
scoray [572]

Answer:8x

Step-by-step explanation:

2++2=4 add x up 4 = 8x

3 0
2 years ago
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Which equations below represent lines that are perpendicular to the line that contains (1, -2) and (3, 4)? (CHECK PICS FOR ANSWE
Gala2k [10]

First, let's find the slope of the line from the points given.

m = (4 - - 2) / (3 - 1)

m = 6 / 2

m = 3

Secondly, we know that a line perpendicular to the original must have a slope that is the opposite reciprocal of the original. For the given points, the opposite reciprocal slope would be -1/3.

Now, we can put all of the equations below into slope intercept form and find the ones that have a slope of -1/3.

Equation 1: Correct

y = -1/3x - 5

Equation 2: Incorrect

y = 3x - 3

Equation 3: Incorrect

y - 2 = 3(x + 1)

y - 2 = 3x + 1

y = 3x + 2

Equation 4: Correct

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3y = -x + 9

y = -1/3x + 3

Equation 5: Incorrect

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Hope this helps!! :)

8 0
2 years ago
Which of the following statements about feasible solutions to a linear programming problem is true?A. Min 4x + 3y + (2/3)z
Len [333]

Answer:

The answer is "Option A"

Step-by-step explanation:

The valid linear programming language equation can be defined as follows:

Equation:

\Rightarrow \ Min\  4x + 3y + (\frac{2}{3})z

The description of a linear equation can be defined as follows:

It is an algebraic expression whereby each term contains a single exponent, and a single direction consists in the linear interpolation of the equation.

Formula:

\to \boxed{y= mx+c}

7 0
3 years ago
A box of cereal states that there are 75 calories in a 34-cup serving. What is the unit rate for calories per cup? How many calo
xeze [42]
The unit rate is how many calories are in 1 cup of cereal.
Set up a proportion:
\frac{75 cal}{3/4 cup} = \frac{X cal}{1 cup}
Cross multiply and solve:
\frac{3}{4} X = 75\\ 3X=300\\X=100
There are 100 calories per cup of cereal.

To get the calories in 4 cups of cereal, simply multiply the unit rate of 100cals/cup by 4.
100*4=400
There are 400 calories in 4 cups of cereal.
8 0
3 years ago
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