Which equation illustrates the identity property of multiplication?

A. (a + bi) × c = (ac + bci)
B. (a + bi) × 0 = 0
C. (a + bi) × (c + di) = (c + di) × (a + bi)
D. (a + bi) × 1 = (a + bi)

Answers

Answer 1

Answer:

Step-by-step explanation:

2

Answer 2

Answer: D. (a+bi) times 1 = (a+bi)

Step-by-step explanation: i just took the test on edge2020


Related Questions

20 POINTS AND BRAINLIEST
This table shows the cost (y) for mailing a package. The customer is charged an
initial fee for mailing the package. An extra charge is added based on the weight of
the package (x).
Package Weight
1.3 lb
1.5 lb
2.0 lb
3.0 lb
5.0 lb
Cost
$3.70
$4.00
$4.75
$6.25
$9.25
What does the value of the y-intercept represent when the data in the table are
modeled using a linear function?

the package weight
the total mailing cost
the cost per pound
the initial fee

Answers

The initial fee.

Hope this helps ;)

Answer:

initial feee

Step-by-step explanation:

What expressions are equivalent to 10^-5x10^2

Answers

Answer:

Answer= D and E

Step-by-step explanation:

(for two powers multiplied together we add them)

[tex]10^{-5}[/tex]×[tex]10^{2}[/tex]

=[tex]10^{-5+2}[/tex]

=[tex]10^{-3}[/tex]

this is the same as:

=[tex]\frac{1}{10^{3} } =\frac{1}{1000}[/tex] (as [tex]x^{-y}[/tex] is the same as [tex]\frac{1}{x^{y} }[/tex])

or

[tex](\frac{1}{10})^{3}[/tex] (as this is the same as [tex]\frac{1}{10}[/tex]×[tex]\frac{1}{10}[/tex]×[tex]\frac{1}{10}[/tex] which is equal to [tex]\frac{1}{1000}[/tex] the answer for the question)

2x^4–5x^3+x^2+3x+2=?

X=5

Answers

Answer:

[tex]2x^4–5x^3+x^2+3x+2=[/tex]

[tex]2 \times 5^4–5 \times 5^3+5^2+3 \times 5+2[/tex]

= 2 × 625 – 5 × 125 + 25 + 3 × 5 + 2

=1250 – 625 + 25 + 15 +2

= 1292 – 625

= 667

Suppose that a box contains 8 cameras and that 4 of them are defective. A sample of 2 cameras is selected at random. Define the random variable X as the number of defective cameras in the sample. Write the binomial probability distribution for X . Round to two decimal places

Answers

Answer:

P(x) = 8Cx * p^x * (1 - p)^(8 - r) ; r = 0, 1, 2

Step-by-step explanation:

Given that:

Total Number of cameras (n) = 8

Defective cameras = 4

X: number of defective cameras

For a binomial distribution :

P(x) = nCx * p^x * (1 - p)^(n - x)

Probability of success (p) on each trial is the same = (total number of samples / number of defective samples) = 8/4 = 0.5

If 2 samples are chosen at random :

Then, the binomial probability distribution will be :

P(x) = 8Cx * p^x * (1 - p)^(8 - r) ; r = 0, 1, 2

I need help Type fast

Answers

yeah i can help u out on how u can get answers for math go check out m a t h w a y

Jordan get a $10 allowance and works a job that pays $7.00 per hour. Alex gets a $20 allowance and works a job that pays $6.50 per hour. If they both work the same number of hours each week, how many hours would they need to work to have the same amount of money for the week?

Answers

Answer:

20 hours

Step-by-step explanation:

Let x = number of hours

Jordan

Allowance = $10

Pay per hour = $7

Total = 10 + 7x

Alex

Allowance = $20

Pay per hour = $6.50

Total = 20 + 6.50x

Equate total of Jordan and Alex earnings

10 + 7x = 20 + 6.50x

Collect like terms

10 - 20 = 6.50x - 7x

-10 = - 0.5x

Divide both sides by - 0.5

x = -10 / -0.5

= 20

x = 20 hours

Jordan and Alex will both work for 20 hours to have the same amount of money in a week

The graph shows the cost of purchasing T-shirts. Find the constant rate of change for the graph. Then explain what points (0,0) and (1,9) represent​

Answers

Answer:

See below

Step-by-step explanation:

As per the attached graph we observe that the constant rate of change is 9 as each step of horizontal change corresponds to 9 steps of vertical change

It is found as the division below:

(9-0)/(1-0) = 9/1 = 9

Point (0, 0) indicates the start point

Point (1, 9) indicates the cost of 1 t-shirt

Solution

As to the attachment graph ;

we observed that the constant rate is 9each step of horizontal change correspond to 9 steps of vertical change

Now,

according to the question

it is found as the division below ;

(9-0)/(1-0)=9/1 = 9

the point which is indicating the starting point ;

(0,0)

the point which indicate the cost of one t-shirt ;

(1,9)

Which of these is it ?..

Answers

Answer:

D) all of the above

Step-by-step explanation:

If a line bisects another line, that means the length of the lines are equal

The lines are perpendicular because angle APR is 90 degrees

If the lines are perpendicular, then angle RPB is 90 degrees

HEY CAN ANYONE PLS ANSWER DIS MATH QUESTION RQ!!!!!!

Answers

Answer: 6 i thank

Step-by-step explanation:

So three quarters is 1/3. So 1/3 of 18 is 6.

And the average size of an  Gecko is 18in

And  a Iguanas is 1/3 that of an Gecko

Hopefully that helps

I need helpppp?!!!
What is the slope of the line??
Please give right answer

Answers

Answer: -1/2

Step-by-step explanation:

Slope=rise/run

Up 1 and to the left 2 which makes it a negative

slope = -1/2

to find this, take two points from the graph. I used (0,3) and (2,2). Then find the difference between the y coordinates and x coordinates. So in this case, the difference between 3 and 2 is 1. And the difference between 0 and 2 is two. And remember it is rise over run so that makes it 1/2. And lastly, you know it's negative because the graph is decreasing. hope this helpsss

equal sides of an isosceles triangle are given as 30 cm each if the perimeter of the triangle is 67 cm, find the third sides​

Answers

Answer:

[tex]\boxed{\pink{\sf Value \ of \ third \ side \ is \ 7cm . }}[/tex]

Step-by-step explanation:

According to Question , equal sides of an isosceles triangle are given as 30 cm each if the perimeter of the triangle is 67 cm . And we need to find the third side .

Let us take the third side be x.

By Question ,

[tex]\implies Perimeter_{\triangle}= x + 30 cm + 30cm \\\\\implies 67cm = 60cm + x \\\\\implies x = 67cm - 60cm \\\\\underline{\boxed{\red{\tt\implies x = 7cm. }}}[/tex]

Hence the value of third side is 7cm.

Lily loves horses. Recently, a hurricane traveled through an area of Texas were there is a dense population of horses. Lily can get food for the horses for $0.30 per pound and medical supplies for $.40 per pound. An anonymous donor pledged $8,000 to the effort and has offered to send his plane which can hold 20,000 pounds of cargo to transport the food to the relief effort location. Let x = Number of pounds of Horse Food Let y = Number of pounds of Medical Supplies

Answers

Step-by-step explanation:

Let x = Number of pounds of Horse Food

Let y = Number of pounds of Medical Supplies

so

0.3x+0.4y=8000----1

x+y=20000-----------2  

multiply eqn 2 by 0.3 to eliminate x we have

0.3x+0.4y=8000  

0.3x+0.3y=6000

-0+0.1y=2000

0.1y=2000

y=2000/0.1

y= 20000

put y=2000 in eqn 2

x+20000=20000

x=20000-20000

x=0

its quite unfortunate that for her to maximize the opportunity and the money she has to carry 20,000 pounds of only  Medical Supplies

tia has 53 balloons equally among 4 kids how many balloons will be left over

Answers

Answer:

There will be 1 balloon left over.

Step-by-step explanation:

Each kid will be able to get 13 balloons, and 4 times 13 is 52, so 1 balloon will be left.

Answer:

1

Step-by-step explanation:

Because 4 times 13 = 52

4 times 13.25 = 53

Each kid will get 13, but

in return, you will get 1 of your balloon's left.

Hope this helps! <3

7
Mr. Ealy works at a shoe store. Mr. Ealy's hourly pay is $14, and he also gets 8% commission on sales. He worked 80 hours
over the last pay period and had $3,450 in shoe sales.
How much was his total income consisting of wages and pay over the last pay period?

Answers

Answer:

1396 dollars total

Step-by-step explanation:

First we do the salary

80 hours x 14 dollars= 1120 dollars

1120+ 8 percent of shoe sales

shoe sales=3450$

3450x0.08  commision=276$

1120+276= 1396 dollars

Monica is rollerblading along a trail in Tropical Park. She stopped for water after rollerblading for 2.45 miles. She continued on the trail for another 3.04 miles, then stopped for lunch. She made her final stop after rollerblading for another 2.8 miles. How many miles did Monica rollerblade?

Answers

Answer:

8.29

Step-by-step explanation:

If you add them all together your answer should be 8.29

Answer:

8.29

Step-by-step explanation:

hope it helps! :))

1.which of the following would save more fuel?
a.Replacing a compact car that gets 34 per gallon(mpg)with a hybrid that gets 54 mpg
b.Replacing a sport utility(SUV)that gets 18 mpg with a sedan that gets 28 mpg
c.Both changes would save the same amount of fuel.
2.Explain your reasoning for your choice.

Answers

9514 1404 393

Answer:

  1. b

  2. For each 1000 miles driven, (a) saves 10.9 gallons, while (b) saves 19.8 gallons

Step-by-step explanation:

The fuel savings will depend on the miles driven. If we use 1000 miles as the reference, the various vehicle fuel usages are ...

  gallons = miles/(miles/gallon)

  18 mpg: 1000/18 = 55.6 gallons

  28 mpg: 1000/28 = 35.7 gallons

  34 mpg: 1000/34 = 29.4 gallons

  54 mpg: 1000/54 = 18.5 gallons

So, ...

  replacing 34 mpg with 54 mpg saves 29.4 -18.5 = 10.9 gallons.

  replacing 18 mpg with 28 mpg saves 55.6 -35.7 ≈ 19.8 gallons.

Replacing the SUV with a sedan saves more fuel, assuming all vehicles are driven the same distance.

__

The fuel use reduction from 18 mpg to 28 mpg is about 36%, whereas from 34 mpg to 54 mpg. the reduction is about 37%. The SUV replacement is a better choice because the smaller fraction of a much larger fuel use is still more savings than obtained by replacing the compact car.

Please answer this :) have a good day

Answers

Answer:

Equation: [tex]\\[/tex]m + $37.07 = 55.29Solve: m = $18.22Solution: Brenda recieved $18.22 for her birthday.

Step-by-step explanation:

m + $37.07 = $55.29

$55.29 - $37.07 = $18.22

Hope this helps and pls do mark me brainliest if you can:)

How do you make a fraction like this: 72 3/16 into a whole number?

Answers

What you do is you take the denominator and you divide it into the numerator.


A circular dining room table top has a radius of 22 inches. What is the
diameter of the table top?

What is the circumference of the table top? Write your answer using m.
Show your work.

Answers

Formula: d = 2r
Radius = 22
Substitute back in
d = 2 x 22 = 44
Diameter = 44

Use the graph to determine the domain and range of the relation, and whether the relation is a function.
a. Domain: {x| -10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10}
Range: {y| -6, -5, -1, 1, 3, 4, 5, 7, 8, 10}
Yes, the relation is a function.
b. Domain: {x| -10 ≤ x ≤ 10}
Range: {y| -6 ≤ y ≤ 10}
Yes, the relation is a function.
c. Domain: {x| -10 ≤ x ≤ 10}
Range: {y| -6 ≤ y ≤ 10}
No, one y-value is shared by two x-values.
d. Domain: {x| -10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10}
Range: {y| -6, -5, -1, 1, 3, 4, 5, 7, 8, 10}
No, one y-value is shared by two x-values.

Answers

Answer: A.

Step-by-step explanation:

just answered on edge2020

a rectangular sheet of paper is 5 2/3cm long and 3 1/5cm wide. find its perimeter

Answers

Answer:

85/15+48/15=133/15 ×2=266/15 cm

=17 11/15 cm

Step-by-step explanation:

even number less than 12​

Answers

Answer:

2,4,6,8,10

Step-by-step explanation:

they are even numbers

Answer: 2, 4, 6, 8, 10

Step-by-step explanation:

any of those are even numbers that are less than 12

Carina spent a total of $5.27 buying a pineapple for $3.40 and some tomatoes that were on sale for $0.85 per pound. To determine the number of pounds of tomatoes that she bought, x, Carina wrote and solved the equation as shown below.

3.40 + 0.85 x = 5.27. 0.85 x = 8.67. x = 10.2 pounds.

Where, if anywhere, did Carina make an error?
HELP PLS!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Carina make an error because her solving problem, Carina should have subtracted 3.40 from 5.27.

Answer:

Carina should have subtracted 3.40 from 5.27

Step-by-step explanation:

i took the quiz, hope this helps<3

In 2019-2020, North Carolina spent $10,632 per student. The per-pupil spending has decreased at 6% per year. If this continues, what will be the per-pupil spending in 4 years?

Answers

Answer:

The per-pupil spending will be approximate $8,300 in 4 years

Step-by-step explanation:

Exponential Model

The exponential function is often used to model natural growing or decaying processes, where the change is proportional to the current quantity.

An exponential decaying function is expressed as:

[tex]C(t)=C_o\cdot(1-r)^t[/tex]

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The statistics of the years 2019-2020 at North Carolina indicate initial spending of Co=10,632 per student. The decaying rate is r=6% = 0.06 per year, thus the exponential model is:

[tex]C(t)=10,632\cdot(1-0.06)^t[/tex]

[tex]C(t)=10,632\cdot(0.94)^t[/tex]

where t is expressed in years.

We are required to know the expected spending for t= 4 years. Substitute t=4:

[tex]C(t)=10,632\cdot(0.94)^4\approx 8,300[/tex]

The per-pupil spending will be approximate $8,300 in 4 years

BELLE FABRICE HAD $1.70 IN NICKELS AND DINES IN HER POCKET. IF SHE HAD TWO MORE DIMES THAN NICKELS, HOW MANY OF EACH TYPE OF COIN DOES SHE HAVE?​

Answers

Answer:

12 dimes, 10 nickels

Step-by-step explanation:

12x10=120 or in this case $1.20

10x5=50 or $0.50

50+120=170 or $1.70

Sorry if any of it is wrong, I am doing this in the car and in my head

If BD and EG are parallel lines and mDCA = 127°, what is mDCF?

Answers

Answer:

In the diagram above, AB is parallel to EH, and BD is parallel to FH. Also, AB = BC, and EF = FH. If ∠EGC = 70°, then ∠D =

(A) 65°

Step-by-step explanation:

∠IHJ and ∠FEH are the corresponding angles in the given figure.

What are Angles?

an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle.

Corresponding angles are the angles which are formed in matching corners or corresponding corners with the transversal when two parallel lines are intersected by any other line

CJ is the transversal to DF and GI.

From the given options Angle IHJ and angle FEH are corresponding angles.

Hence, ∠IHJ and ∠FEH are the corresponding angles in the given figure.

To learn more on Angles click:

https://brainly.com/question/28451077

#SPJ2

What is the solution to the following system of equations?
y = 6x - 11
-2x - 3y = -7

A. -13/10, -94/5
B. -1/2, -14
C. (1, –5)
D. (2, 1)

Answers

Answer:

D.(2,1)

Step-by-step explanation:

All I did was solve by substitution.

Answer:

D

Step-by-step explanation:

Given the 2 equations

y = 6x - 11 → (1)

- 2x - 3y = - 7 → (2)

Substitute y = 6x - 11 into (2)

- 2x - 3(6x - 11) = - 7 ← distribute and simplify left side

- 2x - 18x + 33 = - 7

- 20x + 33 = - 7 ( subtract 33 from both sides )

- 20x = - 40 ( divide both sides by - 20 )

x = 2

Substitute x = 2 into (1) for corresponding value of y

y = 6(2) - 11 = 12 - 11 = 1

solution is (2, 1 ) → D

Can someone help me with eatheR G AND H, I AND J, OR. K AND L plzzzz two of any of your choice :)

Answers

G) 2x= 60 degrees and x Is 30 degrees H) is 30 degrees

show work .-12.4+9.2

Answers

Answer: -12.4 + 9.2 = -3.2

4-2=2

9-12=3

Step-by-step explanation: An easy way that I've found is to just subtract the smaller digits (9.2) from the larger digits (12.4) and make the answer a negative.

Answer:

-3.2

Step-by-step explanation:

This is the longer explanation.

-12.4+9.2 let's start with the tenth values.

On a number line, when you're adding a positive number to a negative number you go up. -.4+.2 would be -.2, but if that's too difficult imagine if it was tens place meaning -4+2 which would equal 2 but the difference is you have to add the decimal in this problem. So the answer is -.2.

Now, we are adding 9 to -12. On a number line, think of it as being positioned at -12 and having to go up 9 times because remember when you're adding a positive number to a negative number you go up. When you go up the number line 9 times you stop at -3. When you go back down subtracting 9, you'll be placed at -12. So our answer is -3.

-3.0+-.2= -3.2. When you add -.2 to -3 you end up with -3.2. Line it up as a typical addition problem if you need to.

Joshua walked 14 feet down the hall of his house to get the door he continued in a straight line out the door and across the yard to the mailbox, a distance of 24 feet he came straight back across the yard 10 feet and stopped to pet his dog How far did joshua walk in total

Answers

Answer:

Joshua walked 48 feet in total.

Step-by-step explanation:

To find the total distance we need to sum every distance that he walked. We have:

- First: Joshua walked down the hall to the door = 14 feet

- Second: He continued in a straight line out the door and across the yard to the mailbox = 24 feet

- Third: He came straight back across the yard and stopped to pet his dog = 10 feet

Hence, the total distance is:

[tex] d_{T} = d_{1} + d_{2} + d_{3} = 14 ft + 24 ft + 10 ft = 48 ft [/tex]

Therefore, Joshua walked 48 feet in total.

I hope it helps you!

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