Answers
Answer:
a,c,d
Step-by-step explanation:
[tex]a. \\4i^9+4i^7\\=4i(i^2)^4+4i(i^2)^3\\=4i(-1)^4+4i(-1)^3\\=4i-4i\\=0\\b.\\2i^{18}-3i^{11}\\=2(i^2)^9-3i(i^2)^5\\=2(-1)^9-3i(-1)^5\\=-2+3i\\c.\\7i^{36}-11i^{11}-11i^9\\=7(i^2)^{18}-11i(i^2)^5-11i(i^2)^4\\=7(-1)^{18}-11i(-1)^5-11i(-1)^4\\=7+11i-11i\\=7\\d.\\8i^{22}-1\\=8(i^2)^{11}-1\\=8(-1)^{11}-1\\=-8-1\\=-9[/tex]
e.
[tex]2i^{27}+4\\=2i(i^2)^{13}+4\\=2i(-1)^{13}+4\\=-2i+4[/tex]
Related Questions
combining like terms with negative coefficients
2x-4xy+5x-2xy-4x-4y?
Answers
Answer: 3x-6xy-4y
Step-by-step explanation: So, it’s been a few years since I’ve been in high school, but if I remember correctly...it should break down as such...
A good method to breaking this down is to use parentheses to break up the equation.
Example: (2x)(-4xy)(+5x)(-2xy)(-4x)(-4y)
Keep in mind we are only using the parentheses as a breaker and not as multiplication as it can be seen.
So, start with the singular ‘x’ variants. (2x) (+5x) (-4x). 2x+5x is 7x. 7x-4x is 3x. Now, move onto ‘xy’ variant. (-4xy) and (-2xy). As these are both negative, they add together to make an even lower number...being -6xy. Onto the final step taking the singular ‘y’ variant. There’s only 1 ‘y’ variant so it just stays -4y.
In the end, you end up with 3x-6xy-4y. :) Hope this helps. If you have any more questions, let me know!
HELPP MEEE IO PRAY THE LORD FOR SOMEONE TO HELPP
Answers
Step-by-step explanation:
...idk hope this one helps
Juan is rappelling down a 495-foot cliff at a rate of 6 feet per second. Which equation would represent the height Juan is above the ground, H, after t seconds?
Answers
Answer:
The equation is H = 495 -6t
Step-by-step explanation:
Here, we want to write an equation that will represent the height Juan is above the ground, after t seconds.
The height we want to calculate is H. The initial height is 495 foot;
At the first second, the decrease in height will be 6 * 1, at the second 6 * 2 and thus at t seconds, the decrease in height will be 6 * t = 6t
Ask the height after t seconds will be;
H = 495 - 6t
Where t represents the time in seconds
help me please!!!!!!!
Answers
Answer:
A'(-5, 6)B'(-5, 2)C'(-9, 2)D'(-9, 6)Step-by-step explanation:
Rotation 180° about the origin changes the sign of every coordinate. The image coordinates are shown above.
HELP SOS!!!!!!!!!!!!!!!!!!!!!!!
Answers
Solve for n.
n + 1 = 4(6-8)
A.n=1
B.n=8
C.n=11
D.n=16
Answers
Simplify 6 - 8 to -2
n + 1 = 4 * -2
Simplify 4 * - 2 to -8
n + 1 = -8
Subtract 1 from both sides
n = -8 - 1
Simplify -8 - 1 to -9
n = -9
Check answer:
n + 1 = 4(6 - 8)
Let n = -9
-9 + 1 = 4 * (6 - 8)
Simplify 6 - 8 to -2
-9 + 1 = 4 * -2
Simplify 4 * -2 to -8
-9 + 1 = 8
n = 8
Answer:
n=9
Step-by-step explanation:
n+1=4(6-8)
We move all terms to the left:
n+1-(4(6-8))=0
We add all the numbers together, and all the variables
n+1-(4(-2))=0
We add all the numbers together, and all the variables
n+9=0
We move all terms containing n to the left, all other terms to the right
n=9
The answer should be n=9
A football team is selling coupon books for $20 each to raise money. The team wants to
raise at least $1500. The team has already sold 45 coupon books. How many additional
ers.
books does the team need to sell to meet its goal?
Answers
Answer:
jumanah75 the answer is 30 more coupon books.
Step-by-step explanation:
20*45 = 900. Need $600 more20* __ = 600600/20 = 30900+600 = 1500. So therfore, the team needs to sell 30 more books :)Write 0.2 repeating as a fraction in simplest form.
Answers
Answer:
[tex]\frac{2}{9}[/tex]
Step-by-step explanation:
We require to create 2 fractions with the repeating 2 after the decimal point.
let x = 0.22.... → (1) ← multiply both sides by 10
10x = 2.22....... → (2)
Subtract (1) from (2) thus eliminating the repeating decimal
9x = 2 ( divide both sides by 9 )
x = [tex]\frac{2}{9}[/tex]
Thus
0.22..... = [tex]\frac{2}{9}[/tex]
Answer:
2/9
Step-by-step explanation:
We require to create 2 fractions with the repeating 2 after the decimal point.
let x = 0.22.... → (1) ← multiply both sides by 10
10x = 2.22....... → (2)
Subtract (1) from (2) thus eliminating the repeating decimal
9x = 2 ( divide both sides by 9 )
x =
Thus
0.22..... =
Jack works at a sporting goods store and makes a commission of 20 percent. His sales for each week are shown below. How much did Jack make in total in commission during all four weeks?
Week
Sales
1
$3,000
2
$2,500
3
$3,500
4
$4,000
$200.00
$260.00
$2,000.00
$2,600.00
Answers
Answer: The answer is D 2,6000.00
Answer:
D
Step-by-step explanation:
which shows the image of rectangle ABCD after rotation (x,y) (-y,x)
Answers
Answer:
The first one
Step-by-step explanation:
the C y value is 4 and the first one's C' x value is -4
proving x=>-y
Answer: The correct answer is A
Step-by-step explanation:
A middle school took all of its 6th grade students on a field trip to see a play at a theatre that has 2000 seats. The students filled 65% of the seats in the theatre. How many 6th graders went on the trip?
Answers
Find the distance between each pair of points (8,5) ,(-1,3)
Answers
Answer:
d=9.220
Step-by-step explanation:
Answer:
sqrt(85)
Step-by-step explanation:
Use the distance formula.
d = sqrt[(x2 - x1)^2 + (y2 - y1)^2]
d = sqrt[(-1 - 8)^2 + (3 - 5)^2]
d = sqrt[(-9)^2 + (-2)^2]
d = sqrt[81 + 4]
d = sqrt(85)
Answer: sqrt(85)
PLEASE HELP
what is the max or min value of
2x^2-12 − 14
Answers
Answer:
-22
Step-by-step explanation:
Is it B or C? I forgot for when you simplify if you either multiply or add.
Answers
Answer:
B
Step-by-step explanation:
[tex](w^8)^8=w^{8\times8}=w^{64}[/tex]
But,
[tex]w^8\times w^8=w^{8+8}=w^{16}[/tex]
Tyrone makes a scale drawing of his backyard. The scale from the
backyard to the drawing is 2 ft to 1 in. The width of the patio on the
drawing is 8 in. What is the width of Tyrone's actual patio? Write your
answer as a ratio (FOR EXAMPLE 2:1) NO LETTERS
Answers
Answer:
16:8 is the width of the patio
Someone plzz answer only number 9 easy!!
(Correct will mark as brainliest)
Thanks guys
Answers
Answer:
4×102 +5×101 +6×100 +8 × 10-1 +1 × 10-2
I hope that made sense lol
Answer:
400 + 50 + 6 + 0.8 + 0.01
Step-by-step explanation:
This is the answer because:
1) Expanded form means to write a number with its full value. It is shown as a sum of each digit multiplied by its matching place value
2) Therefore, the answer is 400 + 50 + 6 + 0.8 + 0.01
Hope this helps!
Defined as a set of all points equidistant from a given point.
A)
arc
B)
angle
C)
circle
D)
line segment
Answers
Answer:
C
The answer is C and the distant from a given point to a point on the Circle is radius
Given f (x) = 2x+1, find when f (x) = 9
Answers
Steps to solve:
f(x) = 2x + 1
~Substitute
f(9) = 2(9) + 1
~Multiply
f(9) = 18 + 1
~Add
f(9) = 19
Best of Luck!
Answer:
19
Step-by-step explanation:
substitute 9 in x and you get 18 then add 1 so total u get 19
Hope that helps :)
8. Fill in the blank. The ___
form of the equation of a line with a slope
m passing through (x1y1) is y- y1= m(x-x1).
Answers
25 more than 8 times a number is the same as 50 less than the product of -5 and the number.
Answers
Answer:
-5x-50=8x+25 solve that
13x= -75
-5.769
Step-by-step explanation:
Answer This Question Correctly For Brainliest (Wrong Answers Will Be Reported!)
Answers
Answer:
see attached
Step-by-step explanation:
Jennifer is saving money to buy a bike. The bike costs $294. She has $126 saved, and each week she adds
$14 to her savings.
How long will it take her to save enough money to buy the bike?
It will take her
weeks to save for the bike.
Answers
Answer:
the answer should be 12 weeks
Step-by-step explanation:
Because, 294-126=168 and 168 divided by 14 is 12
f(x) = x^2-3x + 7. find f(-1)
Answers
Answer:
f(x)= x^2-3x+7
(-1)^2-3(-1)+7
1+3+7
11
Step-by-step explanation:
PLEASE HELP FAST! 50 POINTS!
A three digit number when divided by 5 has an even quotient. When it is divided by 3, it also has an even quotient.
A, What is the digit in the one's place?
B, What can the number be?
Answers
Answer:
A. 0
B. there are many options for this but just some examples are
120, 150, 180, 210, 240, 270, 300, 330, 360, 390
Step-by-step explanation:
the rest of the options are
420, 450, 480, 510, 540, 570, 600, 630, 660, 690,
720, 750, 780, 810, 840, 870, 900, 930, 960, 990.
Which choice could you use to find the distance D between the points shown on the number line
Answers
Answer:
d = |145 − (−235)|
Step-by-step explanation:
What type of number is -1/3
Answers
Answer:
a rational number
Step-by-step explanation:
Rational number are numbers that can be written as a fraction where both the numerator and denominator are integers. This means that both the top and bottom of the fraction are whole numbers.
Which equation describes a line of symmetry for the figure shown? x = 0 y=−x y = x y = 0
Answers
Answer:
y=0
Step-by-step explanation:
Hope this helped!!!
Help me please this is due in 10 minutes, please help !!!
Answers
Answer:
Step-by-step explanation:
the answer is d
-0.56x+0.26x=6’6
?x=6.6
X=6.6
___
X=??
Answers
-0.3x=6.6
X=6.6/-0.3
X=6.3
Answer:
x = -22
Step-by-step explanation:
Solving in steps:
-0.56x+0.26x=6.6-0.3x = 6.6x = 6.6/(-0.3)x = -229 x 10' =
______________________
Answers
Answer:
9 x 10 = 90
Step-by-step explanation:
Answer:
90
Step-by-step explanation:
9x1=9 then add the zero
=90