Which set of numbers are imaginary numbers?
Answer:
Step-by-step explanation:
Imaginary. Imaginary numbers are numbers whose squares are negative. They are the square root of minus one, i = √−1, and all real number multiples of i, such as 2i and i√2.
The required set of imaginary numbers are, √-1, √-4, √-5. Option A is correct.
To determine from the options the set of imaginary numbers.
A number system is described as a technique of composing to represent digits. It is the mathematical inscription for describing numbers of a given set by using numbers or other characters in a uniform method. It delivers a special presentation of every digit and describes the arithmetic structure.
Here,
imaginary number are the number such square root of negative numbers,
So, the set of imaginary numbers is √-1, √-4, √-5.
While all other set are given are not set of imaginary numbers.
Thus, the required set of imaginary numbers are, √-1, √-4, √-5. Option A is correct.
Learn more about the number system here:
https://brainly.com/question/22046046
#SPJ2
bob rewrite the expression 6-(-8) as 6-(+8). Is he correct or incorrect? Explain how you know.
Answer:
Incorrect
Step-by-step explanation:
When you subtract a negative number it changes it to adding a positive number according to math rules.
6 - (-8) -> 6 + 8
Best of Luck!
Answer:
if Bob rewrite the expression 6-(-8) as 6-(+8) it will be incorrect.
Step-by-step explanation:
If Bob rewrite the expression, 6-(-8) as 6-(+8) he will be incorrect because if he right 6-(-8) as 6-(+8) it will be completely incorrect as if we open the bracket of 6-(-8) it becomes 6+8which is 14 but if we opens open the bracket of 6-(+8) which is -2 and hence simplify will be totally incorrect .Thus,bob should not rewrite the expressions, 6-(-8) as 6-(+8).
I hope this will help you.....please mark my answer as BRAINLIEST if you liked it....PLESEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE HELP
Five less than the product of 13 and a number
Use the variable n to represent the unknown number.
Step-by-step explanation:
If the variable is n, then
(13×n)-5
13n-5
Answer:
13n - 5
Step-by-step explanation:
FIND DB HELP.
ITS GEOMETRY AND IM SO CONFUSED
Step-by-step explanation:
Given,
D = 1/4
B = 2/3
to find the length of DB,
DB = 1/4+2/3
= 11/12
How many quarters are there in 2¼ ?
Answer:
9
Step-by-step explanation:
[tex]\frac{2\frac{1}{4}}{4} = 9[/tex]
(2 1/4) / 4 = 9
Hope it helps,... Chow,...!
Square ABCD and isosceles triangle EFG have the same perimeter. Work out the length of FG.
Answer:
8
Step-by-step explanation:
How many solutions are there to the equation below?
12x + 32 = 12x - 7
A. 1
B. infinitely many
C.0
Answer:
C
Step-by-step explanation:
this is the answer because both sides are parallel
when on a graph
?? anyone know the answer i dont know how to solve for this
Answer:
C
Step-by-step explanation:
-3 is the y intercept, where the line crosses the y axis
-2.666667 is the slope, rise over run
fraction into the statement 1:50000
Answer:
1/50000
please mark as brainliest thanks!
Which fractions are equal to 0.375?
The fraction that is equal to 0.375 is 3/8.
Hope this helps! :)
Tutorial
Sophie went to the lake with her family. First, they spent 1
1
4
hours fishing. Then, they spent twice as much time swimming. How much time did they spend fishing and swimming in all?
Answer:
342 hours
Step-by-step explanation:
114 x 2 = 228
228 + 114 = 342
114 hours fishing
228 hours swimming
Hope this helps, please leave any questions in the comments. Thanks
cos(-x) = -cosx for all values of x.
True or false?
Help please I don’t know it
Answer:
2 2/3
Step-by-step explanation:
They are all getting multiplied by 3/5 and 2 2/3 is the largest of all the numbers. Hope this helps!
Don't give me the answer just explain where I messed up.
Answer:
9x^2 -2x+8
Step-by-step explanation:
( 9x^2 -5x) - ( -3x -8)
Distribute the minus sign
( 9x^2 -5x) +3x +8
Combine like terms
9x^2 -2x+8
The x^2 should be positive and you have it as negative
Answer:
Their is not supposed to be a negative sign infront of the 9x
Step-by-step explanation:
if angle 4 is 52.7, what are the measures of angles 1,2, and 3?
Answer:
127.352.7127.352.7Step-by-step explanation:
Since we know the angle measure of angle 4, we already know that angle 2 will have the same measure according to do the vertical angle theorem. Now to find angles 1 and 3, we can make an equation and solve for x (supplementary angles).
52.7 + x = 180
x = 127.3
Best of Luck!
describe the following sets in roster form using the indicated letters
[tex]Question \: in \: comments[/tex]
I NEED HELP ITS DUE TODAY I WILL GIVE BRAINliST PLZz
Answer:
49
Step-by-step explanation:
What is the common ratio between successive terms in the sequence?
Answer:
1/3
Step-by-step explanation:
the formula of common ratio is given as
[tex]r = \frac{a2}{a1} [/tex]
a1= 27 ,a2=9
r= 9/27
r= 1/3
(f×g) (x)
(4x+8)×(2x-12)
Answer:
[tex] = (4x + 8)(2x - 12) \\ = ( {8x}^{2} - 48x + 16x - 96) \\ = (8 {x}^{2} - 32x - 96) \\ = 8( {x}^{2} - 4x + 12)[/tex]
Answer:
\begin{gathered} = (4x + 8)(2x - 12) \\ = ( {8x}^{2} - 48x + 16x - 96) \\ = (8 {x}^{2} - 32x - 96) \\ = 8( {x}^{2} - 4x + 12)\end{gathered}
=(4x+8)(2x−12)
=(8x
2
−48x+16x−96)
=(8x
2
−32x−96)
=8(x
2
−4x+12)
How is the solution set of the sentence below described?
x + 5 < 7
{all numbers less than }
{all numbers less than 2}
{all numbers less than 7}
{all numbers less than 12}
none of these
Answer:
{all numbers less than 2}
Step-by-step explanation:
x cannot be greater than 2, because it would go over 7
Answer:
{all numbers less than 2}
Step-by-step explanation:
x can only be 2 or lower to make the sentence true
A farmer is making a circular pen for her pigs. She needs the pen to have a diameter of 26 feet. If fencing costs $32 per foot, which is the closest to the total cost of the fence that the farmer needs to make the pen?
A) $2894.01
B) $ 2765.19
$ 2612.48
D) $ 2578.94
Answer:
C
Step-by-step explanation:
circumference= 2* pie*(26/2)
Answer:
[tex]\boxed {\boxed {\sf C. \$ 2612.48 }}[/tex]
Step-by-step explanation:
We are asked to find the cost of the fence a farmer needs to make a pen.
FeetThe fence is used to make a circle. We want to find the cost, but we first need to find how many feet of fence is needed. Essentially, we have to find the perimeter, but this is called the circumference because it is a circle. The formula for calculating circumference is:
[tex]c= \pi d[/tex]
The diameter (d) of the pen is 26 feet and we can use 3.14 for pi. Substitute these values into the formula.
[tex]c=3.14 * 26 \ ft[/tex]
Multiply.
[tex]c= 81.64 \ ft[/tex]
CostThe farmer needs 81.64 feet of fencing. The cost of fencing is $32 per foot, so we multiply the cost by the feet needed.
[tex]\$32 / ft * 81.64 \ ft[/tex]
The units of feet cancel
[tex]\$ 32 * 81.64[/tex]
[tex]\$2612.48[/tex]
The cost of the fencing is $2612.48 and choice C is correct.
The price of a cup of coffee has risen to $2.45 today. Yesterday's price was $2.15. Find the percentage increase. Round your answer to the nearest tenth of a percent.
Answer:
14%
Step-by-step explanation:
To find the percentage change of any two amounts you just need this formula: (new - old) ÷ old
New price = $2.45
Old price = $2.15
2.45 = 2.15 = 0.3
0.3 ÷ 2.15 = 0.139534883721
This would make the percentage increase = %13.9534883721
But the question wants it rounded to the near tenth, so it's %14
Answer:
13.9535% increase, so yeah, like, 14%
Step-by-step explanation:
Need help ASAP pls!!!!!!
Solve for x.
6x + 2 = 14
x = 12
x = 2 2/3
x = 2
x = 1 3/4
Answer:
x=2
Step-by-step explanation:
6x + 2 = 14
Subtract 2 from each side
6x+2-2 = 14-2
6x= 12
Divide by 6
6x/6 = 12/6
x=2
Answer: x=2
Step-by-step explanation:
Find the distance between the points.
(1/2, 2,3), (2, -2)
Given g(x)=-x+2g(x)=−x+2, find g(5)g(5).
Work Shown:
g(x) = -x+2
g(5) = -5+2 ... replace every x with 5
g(5) = -3
Answer:
g(5) = -3
Step-by-step explanation:
given:
[tex]g(x ) = - x + 2g(x) = - x + 2[/tex]
find:
[tex]g(5)[/tex]
replace x with 5
[tex]g(5) = - 5 + 2[/tex]
[tex]g(5) = - 3[/tex]
I'm sorry to bother. I really can't understand this and my teacher isn't offering help after school today. Could someone help? I've already done 5-8
Answer:
Step-by-step explanation:
is this involved with the pythagorean angles?\
The number of people is inversely proportional to the number of days for a bag of rice to last. If it takes 8 people for a bag of rice to last 5 days, how many days would it take 10 people?
Answer:
4
Step-by-step explanation:
the ratio is 8/5, so the inverse would be 5/8, then it went up to 10, so it would be 10/4
C. Find the equation of the line perpendicular to
y = 14x-5 and passing through (2,-3).
Answer:
y = -1/14x - 20/7
Step-by-step explanation:
An equation consists of y = mx + b.
m = slopeb = y - intercept- When a line is perpendicular, the slope becomes the opposite.
14 = -1/14
- Now, that we have the slope, all we need to do is find the y-intercept/b.
y = -1/14x + b
-3 = -1/14(2) + b
-3 = -1/7 + b
-20/7 = b
The factorization of a (x + y + z) + b(x + y + z) + c(x + y + z) is
answer plz
Answer:
(a+b+c)(x+y+z)
Each term is multiplied by the same value
Step-by-step explanation:
a (X+y+z) + b(x+y+z)+c(x+y+z)
=ax+ay+az+bx+by+bz+CX+cy+cz
=x(a+b+c) + y(a+b+c) + z(a+b+c)
=(x+y+z) (a+b+c)