Someone help me on this.

Someone Help Me On This.

Answers

Answer 1

Answer:

[tex]-57-39i[/tex]

Step-by-step explanation:

So we have the expression:

[tex](7+2i)(-9-3i)[/tex]

FOIL:

[tex]=7(-9)+7(-3i)+2i(-9)+2i(-3i)[/tex]

Simplify:

[tex]=-63-21i-18i-6i^2[/tex]

Recall that i² is just -1. Thus:

[tex]=-63-21i-18i-6(-1)[/tex]

Simplify:

[tex]=-63-21i-18i+6[/tex]

Combine like terms:

[tex]=(-63+6)+(-21i-18i)[/tex]

Add:

[tex]=-57-39i[/tex]

And we're done!


Related Questions

1 Point P(-12. 7) is reflected over the x-axis. What are the coordinates of P'?

Answers

Answer:

P prime would be (-12, -7)

Jens purchased a new ski jacked for $91. The Jacket was marked down 35%. What was the original price of the jacket?

Answers

Answer:

1.00-.35=.65

.65×140.00=$91.00

Give a picture about real- life situation illustration percentage and decimals

Answers

Step-by-step explanation:

A good example that comes to find is the fuel gauge found on a car, this gauge allows the driver to monitor the percentage of fuel left in the car.

Let's assume the car fuel tank has a capacity of 100 liters. if the indicator is showing half-filled, to illustrate this in percentage it is written as 50% while decimal it will be 0.5.

Find the midpoint of CH if C has coordinates (-5,-2) and H has coordinates (9,-4)

Answers

Answer:

(2,1)

Step-by-step explanation:

[tex]\mathrm{Midpoint\:of\:}\left(x_1,\:y_1\right),\:\left(x_2,\:y_2\right):\\\quad \left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)\\\\\left(x_1,\:y_1\right)=\left(-5,\:-2\right),\:\left(x_2,\:y_2\right)=\left(9,\:4\right)\\\\=\left(\frac{9-5}{2},\:\frac{4-2}{2}\right)\\\\= (\frac{4}{2} , \frac{2}{2} )\\\\=\left(2,\:1\right)[/tex]

(2,1) that’s the right answer

Show that the equation represents a circle and find its center and radius.
x2 + y2 +6y + 2 = 0

Answers

Answer:

Step-by-step explanation:

The general equation of a circle can be expressed as (x-a)²+(y-b)² = r² where (a,b) is the centre of the circle and r is the radius.

To show that the equation x² + y² +6y + 2 = 0 represents a circle, we need to write it in the format above using the completing the square method.

Given x² + (y² +6y) + 2 = 0

First we need to complete the square of the square in parenthesis by adding the square of half of the coefficient of y i.e [tex](\frac{1}{2}*6) ^2[/tex] to the equation and adding the constant to the other side of the equation as well.

x² + (y² +6y) + 2 = 0

[tex]x^2+(y^2+6y+(\frac{1}{2}*6) ^2)+2 = 0+(\frac{1}{2}*6) ^2\\x^2+(y^2+6y+(3) ^2)+2 = 0+3 ^2\\x^2+(y^2+6y+9)+2 = 0+9\\x^2+(y+3)^2+2 = 9\\x^2+(y+3)^2+2-2 = 9-2\\x^2+(y+3)^2 = 7\\(x-0)^2+(y+3)^2 = 7\\[/tex]

Hence the equation represents a circle with centre C at (0, -3) and radius of √7

Solve for x: 4(x + 2) = 3(x - 2)
-2
-4
-10
-14

Answers

Answer:

x=-14

Step-by-step explanation:

Natalie has 1/2 gallon of milk. She pours an equal amount of milk each of 8 glasses.

Answers

Answer:

there are 4 quarts in a gallon so therefore the glasses are half a quart

Step-by-step explanation:

yes

During the first round of a game, Silas scores 15 points. He loses 30 points during the second round and gains 10 points during his final turn. What is Silas’ final score? A. –55 B. –25 C. –5 D. 55

Answers

Answer:

C. -5

Step-by-step explanation:

Imagine a number line from -15 to 15.

Start at 15, and go left for 30 hops, since we are subtracting. This gives us -15.

Now, start at -15. We go right for 10 hops since we are adding. Where do we land? -5. Thus giving us our answer.

Or you can do it this way:

15-30= -15

-15+10= -5

-5

I hope this helped!

Priya and Tyler are discussing the figures shown below. Priya thinks that B, C, and D are scaled copies of A. Tyler says B and D are scaled copies of A. Do you agree with Priya, or do you agree with Tyler? Explain your reasoning.

Answers

Answer:

Neither Priya nor Tyler is correct. Both are wrong.

Step-by-step explanation:

Figure D is the only shape that we can refer to as a scaled copy of figure A. This is because, from observation, all segments that make up figure D are times two of the corresponding segments that make up figure A.

Whereas, if we compare figure B, and C with figure A, not all of their segments is twice as the corresponding segments of figure A.

Therefore, both Priya and Tyler are wrong. We cannot agree with any of them.

Sally works as an estimator for G&J Electric. She has determined that 550 feet of electrical cable will be needed to wire a new house. Later, Sally is told that the
homeowner has decide to cut back from a three-car garage to a two-car garage, which will eliminate two branch circuits, one of 23 feet and the other of 34 feet. How
many feet of wire will be needed now?

Answers

Answer:34

Step-by-step explanation:

i just did it

Answer: the number of feet needed after the change is 493 Feet

Step-by-step explanation:

you’re welcome

What are the coordinates of the vertex for
f(x)= 3x^2 +6x+3:
(-1,0)
(3.6)
(0,-1)
(6,3)

Answers

Answer:

Step-by-step explanation:

f(x) = 3x^2 + 6x + 3

a of s: -6/6 = -1

3(-1)^2 + 6(-1) + 3

3 - 6 + 3

-3 + 3 = 0

(-1,0)

answer is A. the first one

3z+2x+6 use z=9 and x=6

Answers

3(9)+2(6)=

multiply 3•9=27
multiply 2•6=12
27+12=39

What is the value of the dot shown on the number line below? If the answer is not a whole number, enter it as a fraction or mixed number. PLEASE HELP ME ASAP SCHOOL STARTS RN!

Answers

Answer:

-3.4 = (-17 /5) = -3 2/5

Step-by-step explanation:

Find the x ? Help please

Answers

Answer:

x=23

Step-by-step explanation:


Which of the following is a solution to the equation. X^2
x^2 -6x+5=0

A: -5
B: -1
C: =1/5
D: = 5

Answers

Answer:

x=1 or x=5

Step-by-step explanation:

x2−6x+5=0

Step 1: Factor left side of equation.

(x−1)(x−5)=0

Step 2: Set factors equal to 0.

x=1 or x=5

3 sets of 6 boxes.What is 3 ÷ 5/6 ? three three and three-fifths three and three-sixths three and three-fourths

Answers

Answer:

3.6 or 3 3/5

Step-by-step explanation:

invert the 5/6 to 6/5 and multiply 3x6/5 which would get you 3 3/5

Answer:

the answer is b .

Step-by-step explanation:

What is the estimate sum of 709, 645, 798, 704 and 658
⇔·⇔

Answers

Answer:

3550

Step-by-step explanation:

Round each number: 709 ⇒ 700, 645 ⇒ 650, 798 ⇒ 800, 704 ⇒ 700, 658 ⇒ 700Add the rounded numbers: 700 + 650 + 800 + 700 + 700 Start slow: 700 + 650 = 13501350 + 800 = 21502150 + 700 = 28502850 + 700 = 3550

I hope this helps!

Answer:

3550

Step-by-step explanation:

Round each number: 709 ⇒ 700, 645 ⇒ 650, 798 ⇒ 800, 704 ⇒ 700, 658 ⇒ 700

Add the rounded numbers: 700 + 650 + 800 + 700 + 700

Start slow: 700 + 650 = 1350

1350 + 800 = 2150

2150 + 700 = 2850

2850 + 700 = 3550

There are 28 flowers in a bouquet. 7 of the flowers are tulips. What
percent of the bouquet are tulips?

Answers

Answer:

25%

Step-by-step explanation:

9+(-3)=______________

Answers

Answer:

6

Step-by-step explanation:

9-3=6

Since -3 is in (), you can just do 9-3 easily

Answer:

My answer to the question is 6.

9+(-3)=9-3=6.

If ST=19 and S lies at -4 , where could T be located?

Answers

Answer:

15 or -23

Step-by-step explanation:

I think you probably already turned this in but in case you haven't:

ST = 19 means that line segment ST is 19 units long. If we know that S is at -4, then T has to be 19 units away from -4, right?

So there's two directions we could go.

Add 19 to -4 to get 15, so T could be at 15. (If there's a line drawn between -4 and 15, it would be 19 units long.)

But the line could go left, towards negative infinity, too. So if we subtract 19 from -4, we'd get -23. T could also be at -23. (If there's a line drawn between -4 and -23, it would also be 19 units long. There's no such thing as a negative length.)

Please mark as Brainliest! :)

What number is 23 percent of 556?

Answers

Answer:

127.88

Step-by-step explanation:

=>23/100*556

=>127.88

Answer:

127.88

Step-by-step explanation:

23 x 556   = 127.88

100

Each of the following are true with respect to Hypothesis testing except for:______.a. by failing to reject the null hypothesis, one has not proven that the alternative hypothesis is correctb. there are no exceptions, because all of the statements above are true.c. the statement of the alternative hypothesis always contains an equal signd. if the null hypothesis is not rejected, it does not mean the null is true

Answers

Answer:

b. there are no exceptions, because all of the statements above are true.

Step-by-step explanation:

Hypothesis testing refers to the method which is used to test the outcomes of the hypothesis. The result of the experiment conducted is analyzed whether or not the desired results are found. It helps in justifying and finding conclusions in the absence of the scientific theories about the conclusions. A null hypothesis is to be known by the individual before performing the Hypothesis testing.

need help −5x = 15 !!!!!!!!!!!!

Answers

Answer:

x = -3

Step-by-step explanation:

−5x = 15

-5x/-5 = 15/-5

x = -3

the variable x = -3

Question 3 (1 point)
(03.06)
Choose the point slope form of the equation below that represents the line that passes through the point (-1, 6) and has a slope of -3.

Answers

Answer:

Step-by-step explanation:

y -6 = -3(x + 1)

y - 6 = -3x - 3

y = -3x + 3

Which of the following is most likely the next step in the series? o O A. o o OB. O c. D.​

Answers

Answer: Choice C

=====================================================

Explanation:

The number of points goes down by 1 each time.

The first figure has 4 points on the circle. The second figure has 3 points, and after that is 2 points. So the fourth figure is mostly likely to have 1 point on the circle.

The next step in the circular series is Option C with a point on the circle

What is a Circle?

A circle is a closed figure in which the set of all the points in the plane is equidistant from a given point called “center”. Every line that passes through the circle forms the line of reflection symmetry. Also, the circle has rotational symmetry around the center for every angle

The circumference of circle = 2πr

The area of the circle = πr²

where r is the radius of the circle

The standard form of a circle is

( x - h )² + ( y - k )² = r²,

where r is the radius of the circle and (h,k) is the center of the circle.

The equation of circle is ( x - h )² + ( y - k )² = r²

For a unit circle , the radius r = 1

x² + y² = r² be equation (1)

Now , for a unit circle , the terminal side of angle θ is ( cos θ , sin θ )

Given data ,

Let the first figure be represented as A

A = figure with a rectangle with 4 points on the circle

Let the second figure be represented as B

B = figure with a triangle with 3 points on the circle

Let the third figure be represented as C

C = figure with a line with 2 points on the circle

Let the next series be represented as D

where D should have only 1 point on the circle

Hence , the figure is Option C with a point on circle

To learn more about circle click :

https://brainly.com/question/28391204

#SPJ7

what is the answer to: (4x)(7y) + (x)(3y)=

Answers

Answer:

31xy

Step-by-step explanation:

28xy + 3xy = 31xy

1.46 x 10^-7 in standard form

Answers

Answer:

0.00000014 x

Step-by-step explanation:

The product of two whole numbers is 650 and their sum is 51. What are the two numbers?

Answers

Answer:

The numbers are 25 and 26.

Step-by-step explanation:

When you multiply 25 with 26 you get their product, 650. And when you add them you get the answer 51.


1.
The approximate total surface area of Earth is 5.1 x 108 km2. All the salt water on Earth has an approximate
surface area of 352,000,000 km2, and all the freshwater on Earth has an approximate surface area of 9 x 106 km?.
How much of Earth's surface is covered by water, including both salt and fresh water? Write your answer in
scientific notation.

Answers

Answer:

1,49 10^8 Km²

Step-by-step explanation:

224 fl oz equals how many gallons

Answers

1.75 google got you
Other Questions
Why do people risk their lives for Democracy? ( in 200 Words pls) a historian who compares world events during the classical era to events during world during the modern era is organizing history by can you put this equation > 3 in a number line. how to factorise the following: a, e, i, j and m SOLVE Suppose you are helping scientists conduct a study of a population of Clear Lakehitch, which is a fish species that lives in Californian lakes. The scientists initially capture80 hitch from a lake and tag all of them. After 30 days, they capture 100 hitch and count20 tags. Use the space below to calculate the estimated number of hitch in the lake. Showyour work What caused the formation of the East African Rift Zone? explain the difference between your ethics and your values 1. Of the following answers, which is NOT a method to control dangerous welding processes?Purge gas damming systems Glove boxes/bags Fume-less electrodes Backing plates Inflation and unemploymentSuppose that the government believes the economy is producing goods and services beyond its optimal level. The government therefore decides to decrease the quantity of money in the economy. This monetary policy______the economy's demand for goods and services, leading to______product prices. In the short run, the change in prices induces firms to produce______goods and services. This, in turn, leads to a_____level of unemployment. In other words, the economy faces a trade-off between inflation and unemployment: Lower inflation leads to______unemployment. GK = 24, HJ = 10, and GH = HI = IJ. Find each length. Memory moments meaning Losses due to accidents at an amusement park are exponentially distributed. an insurance company offers the park owner two different policies, with different premiums, to insure against losses due to accidents at the park. policy a has a deductible of 1.44. for a random loss, the probability is 0.640 that under this policy, the insurer will pay some money to the park owner. policy b has a deductible ofd. for a random loss, the probability is 0.512 that under this policy, the insurer will pay some money to the park owner. calculated. For each of the following items, indicate the element of the accounting equation to which it belongs: Assets, Liabilities or Stockholders' Equity.AssetsLiabilitiesStockholders' EquityAccounts PayableAccounts ReceivableAuto ExpenseCommon StockCashDividendsFees EarnedLandMiscellaneous ExpenseSuppliesSupplies ExpenseWages Expense Derive the positive square root of 982081 4(x + 4) = 12 multi step equation. show all steps with only numbers not words please If I want to do an experiment to test whether vitamin C helps prevent colds, the control group must Please translate ACCURATELY into Spanish Also, does this even make sense? Normally I eat dinner at five oclock because before that, I would be playing football. uestion 3 (1 point)1. Calculate the density of a liquid that has mass of 14.0g and volume of 18.0 cm? Will this liquid float ontop of water or will it sink? (Density of water is 1.0 g/mL)I Look at the world map in your atlas. Although there are Muslims in every country ofthe world, there are no Islamic states in three continents. Can you name them? A turtle walks 7 feet per minute how many yards per hour