Writing expression in a+bi form. Picture included!

Answer:

90°

Step-by-step explanation:

The clock face is a circle and represents 360°

There are 12 divisions 1- 2- 3- 4 - 5 - 6 - 7 - 8 - 9 - 10- 11 - 12 on the face

Each division = 360° ÷ 12 = 30°

There are 3 divisions between 4 and 7 , thus

arc measure = 3 × 30° = 90°

Answer:

90°

Step-by-step explanation:

Answer:

(8,0)   ( -8,0) are the x intercepts

Step-by-step explanation:

Factor

x^2 - 64

This is the difference of squares

(x-8) (x+8)

Set equal to zero to find the intercepts

x-8 = 0    x+8 =0

x= 8  x= -8

Answer: (8,0) and (-8,0)

Step-by-step explanation: It is one positive and one negative 8 because a double positive would be a +64 and a double negative would also be a +64(unless there was another x for example x^2+2x-64.

x^2-64

(x+8) (x-8)

(x+8) (x-8)=0

x+8=0 and x-8=0

(-8,0) and (8,0)

Answer:

EVERYONE IT IS 3/4 lol

Step-by-step explanation:

The difference of the expression (-3 + 1/2) - (-4 + 1/4) is 3/4.

Additive inverse in simple terms is meant to add a number with it's opposite sign to get the result as zero.

Mathematically for any number 'a', a + (-a) = 0 implies that -a is the additive inverse of 'a'.

The given expression is, (-3 + 1/2) - (-4 + 1/4).

(-3 + 1/2) - (-4 + 1/4) = [(-3 × 2 + 1) / 2] - [(-4 × 4 + 1) / 4]

                               = (-7/2) - (-17/4)

The additive inverse of (-7/2) is (+7/2).

Adding and subtracting the additive inverse (+7/2),

(-3 + 1/2) - (-4 + 1/4) = (-7/2) - (-17/4) + (7/2) - (7/2)

                               =  (-7/2) + (17/4) + (7/2) - (7/2)

                               = [(-7/2) - (7/2)] + [(17/4) + (7/2)]

                               = (-14/2) + (31/4)

                               = (-28/4) + (31/4)

                               = 3/4

Hence the difference of the expression given is 3/4.

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Answer:

I think it A, B, D but I'm not certain

Answer:

The correct answer is A B and C

Step-by-step explanation:

A is going the correct way through the arrows and not in random order like D. B is also going in the correct way and same with C.

Answer:

x=5.4

Step-by-step explanation:

12x-72=2x-18   distribute

-2x     =-2x        subtract

10x-72= -18

     +72=+72    add

10x=54   divide

x=5.4      simplify

Answer:

Step-by-step explanation:

12(x−6)=2(x−9)

(12)(x)+(12)(−6)=(2)(x)+(2)(−9)(Distribute)

12x+−72=2x+−18

12x−72=2x−18

Step 2: Subtract 2x from both sides.

12x−72−2x=2x−18−2x

10x−72=−18

Step 3: Add 72 to both sides.

10x−72+72=−18+72

10x=54

Step 4: Divide both sides by 10.

10x

10

=

54

10

x=

27

5

Answer:

x=

27

5

-_______________________________

Hey,

Solution,

Marked price(MP)= $ 80

Discount percent= 20%

Now,

Discount amount=discount percent of MP

= 20% of 80

=20/100*80

= $ 16

Again,

Selling price(SP)=MP - Discount amount

=$80 -$16

=$64

So,the sale price of the CD player is $ 64.

Hope it helps...

Good luck on your assignment....

Stay safe...

_______________________________

Answer:

y = 1/4x -2

Step-by-step explanation:

Answer: CE= 8

Step-by-step explanation:

We see that the slope intercept is y = 8x - 20. So if we substitute x with 2, because x represents the amount of necklaces sold and we are analyzing her net profit after selling 2 necklaces, that gives us y = 8(2) - 20. Which simplifies to y = -4. So by the time Jocelyn sells 2 necklaces, her net profit will be at -4.

Answer:

-$4.00

Step-by-step explanation:

no explanation

Answer:

How to find mean?

mean of a data can be found by adding all the observations and then dividing it by the number of observations. If you do not post also, you may use this formula to find the mean.

Answer:

Post a table and i can give you a real answer

Step-by-step explanation:

Mean is the average, to find average you add up all the numbers and divide the sum by how many numbers there are

I hope this helps u!

Pls pls PLS give brainliest and a thx ;)

Answer:

5n-10 < 6n-8

n - is the variable that's stands for the unspecified number

step 1. ten is less than 5 times a number

step 2. LESS THAN SIGN :)

step 3. six times the number decreased by 8

......................

oh and if you're looking to simplify that problem I believe it would be worked out like this....5n-10<6n-8....subtract 5 from both sides....-10

Answer:

20

Step-by-step explanation:

2% / 100 = .02

200x.02x5=20

Answer:

45 × 5 = 225

Step-by-step explanation:

Please give brainiest.

Answer:

5* 45 = 225

Step-by-step explanation:

as you can see in the second one the denominator is 100* 5 = 500

so we also multiply the numerator

Answer:

B)[tex]-0.70x^2+2.37x+11.96[/tex]

Step-by-step explanation:

No. of second                       Height

0                                               12

1                                               13

2                                               15

3                                               13

4                                               9

5                                               7

Quadratic Regression Equation:  [tex]y = a + b x + c x^2[/tex]

[tex]c = \frac{ [ \sum x^2 y * \sum xx ] - [\sum xy \cdot \sum xx^2 ] } { [ \sum xx \cdot \sum x^2 x^2] - [\sum xx^2 ]^2 }[/tex]

[tex]b =\frac{ [ \sum xy \cdot \sum x^2 x^2 ] - [\sum x^2y \cdot \sum xx^2 ] } { [ \sum xx \cdot \sum x^2 x^2] - [\sum xx^2 ]^2 }[/tex]

[tex]a = [ \sum y / n ] - { b \cdot [ \sum x / n ] } - { a \cdot [ \sum x^2 / n ] }[/tex]

Where ,

[tex]\sum x x = [ \sum x^2 ] - [ ( \sum x )^2 / n ]\\\\\sum x y = [ \sum x y ] - [ ( \sum x \cdot \sum y ) / n ]\\\\\sum x x^2 = [ \sum x^3 ] - [ ( \sum x^ 2 \cdot \sum x ) / n ]\\\\\sum x^2 y = [ \sum x^2 y] - [ ( \sum x^2 \cdot \sum y ) / n ]\\\\\sum x^2 x^2 = [ \sum x^4 ] - [ ( \sum x^2 )^2 / n ][/tex]

Using these formulas the required equation is :[tex]-0.696 X^2 +2.368 X +11.964[/tex]

So, option B is true

B)[tex]-0.70x^2+2.37x+11.96[/tex]

Answer:

B. line graph

Step-by-step explanation:

Answer:

it is B.line graph

Step-by-step explanation:

you would use this line graph to answer the questions

line graphs are the best solutions for this question

Answer:

the exponential function is g(x)

Step-by-step explanation:

because quadratic function is f(x)

Answer:

True

Step-by-step explanation:

If you look at line G it is clearly extending off of plane M while line f doesn't seem to be extending off of plane R.

Answer:

Slope = -3/4

y-intercept = 2

Step-by-step explanation:

[tex]3x+4y = 8\\\therefore 4y = -3x +8\\\therefore y = \frac{-3}{4}x+ \frac{8}{4}\\\therefore y = \frac{-3}{4}x+2\\Equating \: it \: with\: \\y=mx+b\\Slope\:(m) = \frac{-3}{4}\\y-intercept\:(b) = 2[/tex]

Answer:

0.6004

Step-by-step explanation:

A. semi

Step-by-step explanation:

I hope this helps you

Answer: The total amount of her paycheck this week is $50

Step-by-step explanation:

Hi, the full question is :

Alex is 70% of her weekly paycheck automatically deposited into a savings account. This week $35 is deposited. Alex wants to know the total amount of your paycheck this week.

So, to answer this question we have to write an equation and solve for x (total amount of the paycheck).

Since 70% of her weekly paycheck is automatically deposited into a savings account. and this week $35 is deposited, we have to multiply the total amount of the paycheck (x) by the percentage deposited in decimal form (70/100), that expression must be equal to the amount deposited (35)

x (70/100) = 35

Solving for x:

x (0.7) =35

x = 35/0.7

x = $50

Answer:

Step-by-step explAlex is 70% of her weekly paycheck automatically deposited into a savings account. This week $35 is deposited. Alex wants to know the total amount of your paycheck this week.

So, to answer this question we have to write an equation and solve for x (total amount of the paycheck).

Since 70% of her weekly paycheck is automatically deposited into a savings account. and this week $35 is deposited, we have to multiply the total amount of the paycheck (x) by the percentage deposited in decimal form (70/100), that expression must be equal to the amount deposited (35)

x (70/100) = 35

Solving for x:

x (0.7) =35

x = 35/0.7

x = $50

anation:

Answer:

C) A quadrilateral with four congruent sides and four right angles is a square.

The  P ↔ Q represents A quadrilateral with four congruent sides and four right angles is a square.

A closed quadrilateral has four sides, four vertices, and four angles. It is a form of polygon. In order to create it, four non-collinear points are joined. Quadrilaterals always have a total internal angle of 360 degrees.

Given:

If a quadrilateral has four congruent angles, then it's a rectangle.

the statement cannot be true because the same property also carried by Square.

If a quadrilateral has four congruent sides, then it's either a square or a rhombus but reverse is not possible.

A quadrilateral with four congruent sides and four right angles is a square.

The statement is perfectly true because the reverse is also possible.

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Answer4:

Step-by-step explanation:

X;1

Answer:

6x^2 + 2x - 5 (Option C)

Step-by-step explanation:

1. First, add 4x^2 and 2x^2 together (which is 6x^2). You can figure this out by adding 4 and 2.

2. Second, add -5x and 7x (which is 2x)

3. Lastly, subtract 3 and 8, which is -5

WHY DOES THE ANSWER HAVE A NEGATIVE 5?

The equation looks like this: +3 + -8

You are adding 3 to -8, which is the same as subtracting positive 3 and positive 8 (positive times a negative is a negative or a minus sign)

Answer:

C. 6x^2 + 2x - 5

Step-by-step explanation:

4x^2 + 2x^2 = 6x^2

-5x + 7x = 2x

3 - 8 = -5

Therefore,

4x^2-5x+3 + 2x^2+7x-8 = 6x^2+2x-5

Answer:

2/3,2/6,2/8

Step-by-step explanation:

Answer:

The answer is -3x² + 12x.

Step-by-step explanation:

You have to apply Distributive Law,

[tex]a(m + n) = am + an[/tex]

So for this question :

[tex] - 3x(x - 4)[/tex]

[tex] = - 3x(x) - 3x( - 4)[/tex]

[tex] = - 3 {x}^{2} + 12x[/tex]

Answer:

[tex] = - 3 {x}^{2} + 12x \\ [/tex]

Step-by-step explanation:

[tex] - 3x(x - 4) \\ - 3x(x) - 3x ( - 4) \\ = - 3 {x}^{2} + 12x[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

D.441

Step-by-step explanation:

All sides of a square are equal. Due to this, the perimeter can be expressed as 4 times the side of the square. Let x be the side of a square.

Then we have:

4x = 84

x = 21

The area of a square is written as x^2, as x is both the length and the width.

So your answer will be:

(21)^2 = 441

The area of the garden is  441 sq ft

A square is a quadrilateral with four equal sides.

Characteristics of a square includes:

• The diagonals bisect each other at 90°.

• Opposite sides parallel and of equal length

• The four angles of a square are equal.

Perimeter of a square =4 x length

84 = 4 x length

divide both sides of the equation by 4

84/4 = length

length = 21 feet

Area of a square = length²

21² =  441 sq ft

For more information on how to determine the area of a square, check : https://brainly.com/question/13227863?referrer=searchResults