Mathematics High School

(√5+√17i)(√5-√17i)=? (give answer in standard a+bi form)

Answers

Answer 1

Answer:

22

Step-by-step explanation:

Given

([tex]\sqrt{5}[/tex] + [tex]\sqrt{17}[/tex] i )([tex]\sqrt{5}[/tex] - [tex]\sqrt{17}[/tex] i ) ← expand factors using FOIL

= ([tex]\sqrt{5}[/tex] )² - ([tex]\sqrt{17}[/tex] )² i² ← i² = - 1

= 5 - 17(- 1)

= 5 + 17

= 22  

Related Questions

Triangle CAT was rotated to create triangle C’A’T’. Describe the transformation using details and degrees

Answers

Answer:

As this triangle is being transformed by rotation, the angles will stay same as well as the  sides and other details, if you are doing this on a coordinate plane, then the points of the triangle would be changed and nothing else

If my answer helped, please mark me as the brainliest!!

Thank You!

There are 200 petals on 25 daises so what is the proportionality

Answers

Answer:

8 petals per daisy

Step-by-step explanation:

200/25=8

doesnt that mean there's an average of 8 petals on each 1 flower.

The mean weight of the 28 bears at a zoo is 413 pounds. Fuzzy the bear, whose weight is 434 pounds, and Wuzzy the bear, whose weight is 505 pounds, were added to the zoo. What is the new mean of the weight of the bears at the zoo? Round your answer to the nearest tenth and enter pounds in the units box.

Answers

Answer:

416.8 pounds.

Step-by-step explanation:

The mean weight of the 28 bears at a zoo is 413 pounds.

The Total Weight of the 28 bears = Mean weight × number of bears

= 413 pounds × 28 bears

= 11564 pounds

Fuzzy the bear, whose weight is 434 pounds, and Wuzzy the bear, whose weight is 505 pounds, were added to the zoo.

This means the total number of bears

= 30 bears because two additional bears were added

What is the new mean of the weight of the bears at the zoo?

New Mean = 11564 pounds + 505 pounds + 434 pounds/30 bears

= 12503 pounds /30 bears

= 416.76666667 pounds

Approximately to the nearest tenth = 416.8 pounds.

125 feet in 5 seconds. can you maybe please make this? thx.

Answers

Answer:25/5 or 25/1.

Step-by-step explanation: 125 feet in 5 seconds as a unit rate would be 125/5 or 25/1.

I have no idea how to do this lol i need help!!

Answers

JUST THE FIRST ONE:

1 is less than or equal to m, m is less than 6

Start your point at 1, with a closed circle going to the right

Second point, place at 6 with an open circle going to the left

.Rahul and his wife work in Mohan's farm. The Government has declared that the farm workers should be paid Rs. 71 for a day's work. But the land lord, Mohan pays Rs. 60 for Rahul and Rs.55 to his wife. If Rahul works for 55 days and his wife for 40 days, what amount of money will they earn together?

Answers

Answer:

Rs. 5500

Step-by-step explanation:

The government has declared that farm workers should be paid Rs. 71 for a day's work

The landlord Mohan pays Rahul Rs. 60 and pays Rs. 55 to his wife

Rahul works for 55 days

= 60 × 55

= Rs. 3,300

His wife works for 40 days

= 55 ×40

= Rs. 2,200

Therefore the total amount of money earned together can be calculated as follows

= 3300 + 2200

= Rs. 5500

Hence they will earn Rs. 5500 together

please help I'll mark as brainliest​

Answers

X would equal -45 (:

Step-by-step explanation:

-1.5x =9

-x=9/1.5

x=-6

Solving a Work Problem
Sanjay and Felipe are putting together a 500-piece Use the table to write and solve an equation to
puzzle. Sanjay could do the entire puzzle by himself in 6 determine the approximate amount of time it would
hours, while it would take Felipe 8 hours to do the puzzle take Sanjay and Felipe to do the puzzle if they were
alone.
working together.
O 0.8 hours
Rate
(part/h)
Time
(h)
Part of puzzle
completed
1.7 hours
✓ 3.4 hours
Sanjay
t
t
O 7 hours
Felipe
t
t

can someone please explain to me how 500/6+500/8=3500/24 that’s where i’m stuck

Answers

Answer:

3.4 hours

Step-by-step explanation:

w: ( x, y) -> ( , )

​

Answers

Answer:

XD im confused  

Answer:

wth even is this lol, math..?!?!

Step-by-step explanation:

5/8 mile in 1/4 hour

Answers

Answer: 2.5 mph

Explanation:

4 x 5/8 = 2.5

What is the Fractional Notation of .0825%?

Answers

Answer:

33/400

Step-by-step explanation:

0.0825=825/10000

=165/2000

=33/400

Find the slope of a line through the points (-1,-9) and (4, -2).
Select the best answer from the choices provided.
O A.
Vur
OB.
Elm
Ос.
7
5
OD
3
11

Answers

Answer:

m = 7/5

Step-by-step explanation:

slope from 2 points = y2-y1 / x2-x1

x1 = -1

y1 = -9

x2 = 4

y2 = -2

-2 - (-9) / 4 - (-1) = -2 + 9 / 4 + 1

= 7/5

While shopping at a music store, Rick bought 7 CD’s, all at the same price. The tax was $6.50 and the total was $66.00. What was the price of each CD?

Answers

Answer:

$8.50

Step-by-step explanation:

Subtract the tax from the total price:

66 - 6.50

= 59.5

Then, divide this by 7 to find the cost of each CD:

59.5/7

= 8.5

So, the price of each CD was $8.50

Answer:

8.50

Step-by-step explanation:

66-6.50=59.50

59.50 divided by 7 =8.50

43/21 as a decimal rounded to the nearest hundreth

Answers

Answer:

2.05

Step-by-step explanation:

Answer:

2.05

Step-by-step explanation:

43/21 = 2.047 ≈ 2.05

The 4 is in the hundredths place, so you would look at the right of the 4 to determine what to round it to.

If it is 0-4 keep it the same

If it is 5-9 up it by one.

Example,

5.903 = 5.90

6.389= 6.39

Help me plz I will really like it plz!

Answers

Answer:

-5

Step-by-step explanation:

Step 1: Define

f(t) = -3t + 4

f(t) = 19

Step 2: Substitute and Evaluate

19 = -3t + 4

15 = -3t

-5 = t

f(-5) = 19

so like I'm really really bad at dis and I need help ​

Answers

Answer:

option 2

Step-by-step explanation:

Option 2 I hope it helps

Find the number.round to the nearest tenth if possible.110%of 70

Answers

Answer:

77

Step-by-step explanation:

tony says,"josh will dance"(into indirect)​

Answers

“I will dance ” tony says

Question 10 ) What is the solution to the equation ? A x=11 B x=13 C x=16 D x=20

Answers

Answer:

njnjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

jjjjStep-by-step explanation:

hjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

Solve by substitution method
X+ y = -5
y = x+3

Answers

Answer:

(x,y) → (x-5,y-3)

Step-by-step explanation:

Thats the awnser

I can add fractions with unlike denominators. 3/7 + 1/6 =​

Answers

Answer:

[tex]\frac{25}{42}[/tex]

Step-by-step explanation:

Find the LCM of 7 and 6: 42Alter the numerators, so they fit the denominators: 3 × 6 = 18, 1 × 7 = 7Re-write the fractions: 18/42 + 7/42[tex]\frac{18}{42} + \frac{7}{42} = \frac{25}{42}[/tex]  

I hope this helps!

Answer:

25/42

Step-by-step explanation:

first find a same denominator

18/42 + 7/42

then add the new fractions

18/42 + 7/42 = 25/42

The school hiking club has completed 4 out of 5 hikes so far this year. They have hiked 4.6 miles, 3.7 miles, 5.1 miles, and 2.9 miles. If their goal is to hike 20 total miles, how many miles does the last hike need to be?

a.4.7 miles
b.3.7 miles
c.2.7 miles
d.1.7 miles

Answers

Answer:

B

Step-by-step explanation: just add up all of the miles they have all ready hiked and then subtract it from the number they need to hike

When adding integers with the same sign you should

Answers

Answer:

To add integers having the same sign, keep the same sign and add the absolute value of each number.

Step-by-step explanation:

hope it help

Find the volume of a cube if each side is 3.3 inches long. Do not round your answer.

Answers

35.937 inches cubed

To find volume: length x width x height

If the answer is right please consider marking branliest

The speed of an object can be found by taking the distance it travels and dividing it by the time it takes to travel that distance. An object travels 100 feet in 2.5 seconds let the speed, S, be measured in feet per second. True or false: the equation

Answers

Answer:

True the speed S in in Feet/second

Step-by-step explanation:

In this problem we are required to solve for the speed of an object.

given that the expression to solve for the speed is expressed as

speed= distance/time

given data

distance=100 feet

time=2.5 seconds

substituting our given data into the expression we can solve for speed as

speed (S)=100/2.5

S= 40feet/seconds

upon substituting our data the speed S was found to be 40feet/s

True the speed S in in Feet/second

what is the mass of a material

Answers

I am not sure about the answer
The answer is kilogram
Divide the object's weight by the acceleration of gravity to find the mass. You'll need to convert the weight units to Newtons.

Given the following set of data:
3, 4, 5, 6, 8, 9, 9,
which measures below have a value of 6? (Check all that apply.)


mode
range
high value
median

Answers

Median :)
You cross out from left to right

Answer:

median

cross out left to right

Help me with problem 4 please

Answers

Answer:

Step-by-step explanation:

3/4 -0.8 7/10 -3/4 from least to greatest

Answers

Answer:

-0.8 < -3/4 < 7/10 < 3/4

Step-by-step explanation:

theyre decreasing

Answer:

-0.8, -3/4, 7/10, 3/4

solve for x. pls help

Answers

Answer: -2

Step-by-step explanation:

Hope this helps <!>BRAINILEST NEEDED <!> Pls help me 2 :)

X=2 hope this helps :)
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