Answer:
B. x=1+2i or x=1-2i.
Step-by-step explanation:
The equation is given as;
x²-2x+5=0
complete the square method to find value of x as;
x²-2x = -5
x²-2x + 1 = -5 + 1
x²-2x +1 =-4
( x-1 )² = -4
x-1 = ±√-4 ---------where √-1 = i
x-1 =± 2i
So;
x-1 = + 2i
x= 1+2i
or
x= 1-2i
x= 1-2i
I need some help please
Answer:
a: y=-1/2x-3/2
b: y= -4x+2
Step-by-step explanation:
At a sale, coats were sold for $136 each. This price was 85% of a coat's original price. How much did a coat originally cost?
1. Mona sells previously enjoyed rare CDs for $5/ea. and rare vinyl records for $7/ea. She sold a total of 1,200 CDs and records in a particular month, with total sales of $6,760. So:
a. What is the equation? Solve it.
b. How many CDs and records were sold?
c. What were the total dollar sales of each?
hi guys i hope you can help me to answer this question! thanks
Answer:
C or A
Step-by-step explanation:
I think this is write
PLEASE HELP ASAP WILL GIVE BRAINLIEST TO CORRECT ANSWER
Assuming you want to arrive as close to the scheduled time as possible, from which airline should you buy your ticket? Justify your response by addressing both the measures of center and spread of the distributions.
Answer:
Airline Q because it has the most on time arrivals and it is spread out to have more early arrivals than airline p
Step-by-step explanation:
Write a equation
The line which passes through (-3,-3) and (2, 1) point slope(ps)
Write an inequality to match the problem.
There are at least 28 days in every month.
Answer:
28 ≥ month
Step-by-step explanation:
Which of the following fractions can be represented by a terminating decimal?
A.
B.
C.
D.
Answer:
C
Step-by-step explanation:
Chris is reading a book that has 364 pages she reads 3/4 of them then put the book away for a week then she read 3/7 of the remaining pages how many pages were left to read
Can someone just help me !
Answer:
[tex]\sqrt{a} 900[/tex] - 2
Step-by-step explanation:
I won't be answering using words.
1. (3a+2a)(6a²+1-3)
2. (5a)(6a²-2)
3. 6a² × 5a - 2 × 5a
4. 6a × 6a × 5a - 2 × 5a
5. 180a × 5a - 2
6. 900a - 2
7. [tex]\sqrt{a} 900[/tex] - 2
Find the length of Y Z. Round your answers to the tenth, if necessary.
Y(-3,6)
Z(6,1)
Answer:
d=10.29563 or root 106
Step-by-step explanation:
Can someone tell me the answer I’ll give brainlist and points if you get it right
boi pretty sure the answer is 6
Which transformation of AB will produce a line segment A’B that is parallel to AB
Answer:
Step-by-step explanation:
A
Whick equation describes the line that passes through (-3, 1) and is parallel to the line y = 4x + 1?
Answer:
y = 4x + 13
Step-by-step explanation:
First of all, if they are parallel, they must have the same slope, so the 4x is the same. all we need to do now is to change the b to make it cross the point (-3, 1). Doing so, we see that the y-intercept becomes 13. Therefore, the equation is y = 4x + 13.
After my salary was increased by 12%, it was $62,720. What was my salary before the increase?
I'll mark brainliest!
Answer
56,000
Step-by-step explanation:
Solve the proportion. I need to show much work so a step by step explanation would help!
Answer:
Solution: x=5
Step-by-step explanation:
Equations
This is an equation in the form of a proportion or ratio:
[tex]\displaystyle \frac{2}{x+3}=\frac{5}{4x}[/tex]
To solve it, we eliminate the denominators by multiplying by both of them.
Multiply by (x+3)(4x):
[tex]\displaystyle (x+3)(4x)\frac{2}{x+3}=(x+3)(4x)\frac{5}{4x}[/tex]
Simplify both sides:
[tex](4x)*2=(x+3)*5[/tex]
Operate:
[tex]8x=5x+15[/tex]
Simplify:
[tex]3x=15[/tex]
Solve for x:
[tex]x=15/3=5[/tex]
Solution: x=5
Kinsley's age is 7 years less than twice Jacob's age. If Kinsley is 13 years old, how old is Jacob? Choose the answer below that is a viable solution to this problem.
NEEED HELP PLZZ :(
A 5
B 10
C 1
D 2
Answer:
10x2= 20 -7 =13 :answer is 10.
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
Kinsey is 7 years less than twice Jacob's age. Let's call Jacob's age x. IF we call Jacob's age x, our equation can be 2x-7 = 13
2x - 7 = 13
2x = 20
x=10
Jacob is 10 years old.
If a bike goes 12 meters per second (m/s), how fast does it go in km/h?
Convert 75 seconds to hours
x^2+6x≤-5 with an explanation pls
Answer:
−5≤x≤−1
Step-by-step explanation:hope that helps :)))
x2+6x=−5
x2+6x−(−5)=−5−(−5)(Subtract -5 from both sides)
x2+6x+5=0
(x+1)(x+5)=0(Factor left side of the equation)
x+1=0 or x+5=0(Set factors equal to 0)
x=−1 or x=−5
Check intervals in between critical points. (Test values in the intervals to see if they work.)
x≤−5(Doesn't work in original inequality)
−5≤x≤−1(Works in original inequality)
x≥−1(Doesn't work in original inequality)
Answer:
−5≤x≤−1
solve question 2x + 13 =
Answer:
x= -6.5
Step-by-step explanation:
2x+13=0
2x=-13
x=-6.5
Can someone please help me
The answer is A:
<1
<5
3
Graph y = 3/4X + 2
Answer:
Step-by-step explanation:
For some reason my other one didn't post the file
If this helped could I get brainliest please?
Solve for X, and show the equation you would use to solve.
Answer:
x = 20
Step-by-step explanation:
There are both consecutive interior angles and are supplementary.
The equation should be written like this:
5x + 50 + x + 10 = 180
Step 1: Simplify both sides of the equation.
5x + 50 + x + 10 = 180
(5x+x) + (50+10) = 180 (Combine Like Terms)
6x + 60 = 180
6x + 60 = 180
Step 2: Subtract 60 from both sides.
6x + 60 − 60 = 180 − 60
6x = 120
Step 3: Divide both sides by 6.
[tex]\frac{6x}{6} = \frac{120}{6}[/tex]
x = 20
Hope it helps!!
[tex]\sqrt{8} + \sqrt{2}[/tex]
√8 + √2
2√2 + 1√2
3√2
I hope this helps
#2) A 12-ounce bag of marbles contains 64 marbles. Assume the relationship between weight and number of marbles is proportional. How much would you expect a bag of 160 marbles to weight (in ounces)? *
Answer:
Step-by-step explanation:
a 12 ounce bag = 64 marbles
So first you want to find out how much each marble weighs. To do this divide 12 ounces by 64.
1 marble = [tex]\frac{12}{64} = \frac{3}{16} ounces[/tex]
To find the weight of 160 marbles, you just multiply the weight of 1 marble by 160.
160 marbles = [tex]\frac{3}{16}[/tex] ×[tex]160[/tex] = 30 ounces.
find the first four terms of the sequence:
an= 54+ 3(n-1) n= 1, 2, 3...
[tex]\bold{Hello!}\\\bold{Your~Answer~Is~Below!}[/tex]
______________________________
[tex]\bold{Solution~Steps:}[/tex]
[tex]1.)~54+3(1-1):[/tex]
[tex]\bold{Subtract~1~from~1~to~get~0.}[/tex][tex]\bold{Multiply~3~and~0~to~get~0.}[/tex][tex]\bold{Add~54~and~0~to~get~54.}[/tex][tex]2.)~54+3(2-1):[/tex]
[tex]\bold{Subtract~1~from~2~to~get~1.}[/tex][tex]\bold{Multiply~3~and~1~to~get~3.}[/tex][tex]\bold{Add~54~and~3~to~get~57.}[/tex][tex]3.)~54+3(3-1):[/tex]
[tex]\bold{Subtract~1~from~3~to~get~2.}[/tex][tex]\bold{Multiply~3~and~2~to~get~6.}[/tex][tex]\bold{Add~54~and~6~to~get~60.}[/tex][tex]4.)~54+3(4-1):[/tex]
[tex]\bold{Subtract~1~from~4~to~get~3.}[/tex][tex]\bold{Multiply~3~and~3~to~get~9.}[/tex][tex]\bold{Add~54~and~9~to~get~63.}[/tex]______________________________
[tex]\bold{Answers:}[/tex]
[tex]\bold{Term~1=\boxed{54}}[/tex][tex]\bold{Term~2=\boxed{57}}[/tex][tex]\bold{Term~3=\boxed{60}}[/tex][tex]\bold{Term~4=\boxed{63}}[/tex]______________________________
[tex]\bold{Hope~this~helps,}\\\bold{And~best~of~luck!}\\\\\bold{~~~~~~~-TotallyNotTrillex}[/tex]
Please help I don’t know itt
Answer:
I'm not sure what the options are but those are perpendicular lines and they form a right angle. I hope this helped.
Sue graphed the formula for converting temperatures from Fahrenheit to Celsius.
If the temperature is 50 degrees Fahrenheit, what is the temperature in Celsius?
Answer:
10° C
Step-by-step explanation:
(50°F − 32) × 5/9 = 10°C
3/4 divided by 1/8 show work pls
Answer:
7
Step-by-step explanation:
a fraction divided by a fraction can be multiplied by the reciprocal. so...
instead of 3/4 ÷ 1/8, you do
3/4 * 8/1 which equals
24/4 which equals
6
Answer:
6
Step-by-step explanation:
3/4 ÷ 1/8 = 3/4 × 8/1 = 24/4 =6
*8×3=24 *4×1=4
*24÷4=6
What is the slope of the line that passes through the points M (-3,5) and N (1,8)
Answer:
m=3/4
Step-by-step explanation:
See the attached above.
Hope it helps :)
The slope of line passing through M (-3,5) & N (1,8) will be 3/4.
We have been given a line passing through points M (-3,5) & N (1,8) .
We have to find out what will be the slope of the line ?
What is the formula for slope of a line ?
Slope of line is given by , m = (y2-y1) / (x2-x1).
Given that line is passing through points M (x1 , y1) and N (x2,y2) or M (-3,5) & N (1,8).
here , x1 = -3 , y1 = 5 , x2= 1 . y2 = 8
The slope (m) of line will be ;
∵ m = ( y2-y1) / (x2-x1)
m = ( 8-5) / (1- (-3))
m = 3 / 4
To learn more about slope of line click here ,
https://brainly.com/question/16949303
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