Answers
Related Questions
What are the solutions of x^2-2x+5=0? A. X=2i or x=-2i. B. X=1+2i or x=1-2i. C. X=2+i or x=2-i. D. X=2+2i or x=2-2i
Answers
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
Which property of addition is shown in the equation below?
a + bi + 0 + 0i = a + bi
commutative property
inverse property
identity property
associative property
Answers
Answer:
c. Identity property
Step-by-step explanation:
edg 2020
Identity property is used in the equation a+bi+0+0i=a+bi.
What is identity property?
The identity property of addition says that the sum of 0 and any number is that number only.
How to check property?
We have been given the following equation
a+bi+0+0i=a+bi
when we multiply it with 0 we get 0 and the equation becomes
a+bi=a+bi
It shows the identity property of addition.
Learn more about identity property at https://brainly.com/question/1407048
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Find the slope of the line through the given points:
(3, 5) and (-2, 7)
Answers
Answer:
slope is -2/5
Step-by-step explanation:
use y2–y1/x2–x1
Answer:
-2/5
Step-by-step explanation:
formula: y2-y1/x2-x1=
7-5/-2-3= -2/5
PLEASE HELP LOTS OF POINTS I HAVE MADE THIS TWO TIMES GOT THE OTHER ONE TO GET 27 POINTS!
The sequence that proves shape I is similar to shape II when applied to shape I is a reflection across the x or y axes
, followed by a translation 4,5,6 or 7
units right and 2,3,4 or 5
units down, and then a dilation by a scale factor of 0.5 or 1 or 1.5 or 2
.
Answers
Answer:
-4 an -3 11 4 9
Step-by-step explanation:
Answer:
1) reflection across the x-axis
2) 7 units right
3) 2 units down
4) dilation by a scale factor of 2
Step-by-step explanation:
(-5,4) and (1,6)
y-6 =? plz help me
Answers
Answer:
(-5,4) and (1,6) are cordanites on a graph 1st square is ++ 2nd is +- 3rd is -- and 4th is -+
Step-by-step explanation:
If a number is odd, then it has a remainder of 1 when divided by 2.
Which is the hypothesis of the conditional?
Answers
Answer:
The hypothesis of the conditional is "A number is odd".
Step-by-step explanation:
The statement can be represented by the following proposition:
[tex]P \implies Q[/tex] (Eq. 1)
Where:
[tex]P[/tex] is the hypothesis of the proposition.
[tex]Q[/tex] is the conclusion of the proposition.
[tex]\implies[/tex] - Binary connector, which means "If...., then...."
In this case, we present what each propostion represents:
P = A number is odd.
Q = It has a remainder of 1 when divided by 2.
In consequence, the hypothesis of the conditional is "A number is odd".
what is 63 times 4? pls help
Answers
Answer:
252
Step-by-step explanation:
Hope this helps
Answer:
252
Step-by-step explanation:
. If m∠1 = 50°, find the following: a. m∠2 = ? b. m∠3 = ? c. m∠4 =
Answers
Answer: is there a graph
Step-by-step explanation:
Help0oejelensb skeidnekendidne helps 10101
Answers
Answer:
b = (looks to be) -3.5
m = [tex]\frac{1}{2}[/tex]
Type of Slope = Positive, linear
Equation = y = [tex]\frac{1}{2}[/tex]x - 3.5
Please help me help me
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2) 80 • 3/5= 32
3)5 1/3 • 9= 48
4) 1 7/8 • 1/6= 15/48
(Help me with this test question) Lines l and m are intersected by transversal t and l || m. Lines l and m are vertical with l to the left of m. Transversal t intersects them both slanting down and right. The angles formed above t with l and m from left to right are angles 1, 3, 5, and 7. The angles formed below t with l and m from left to right are angles 2, 4, 6, and 8. Select all the angles that are supplementary to ∠1. Group of answer choices ∠3 ∠4 ∠6 ∠5 ∠7 ∠8
Answers
Answer:
∠6 and ∠7
Step-by-step explanation:
To be complementary, they both in total have to sum 180°, and that mean that they have to form a com pleat and straight line. ;)
The supplementary angles of angle 1 are angles 2 and 3.
Two Angles are Supplementary when they add up to 180 degrees.From given figure,
It is observed that sum of angles 1 and 2 is equal to 180 degrees.The sum of angles 1 and 3 is equals to 180 degrees.[tex]\angle1 +\angle2=180\\\\\angle1 +\angle3=180\\[/tex]
Thus , the supplementary angles of angle 1 are angles 2 and 3.
Find out more information about the supplementary angles here:
https://brainly.com/question/12919120
i will give u brainliest!
Answers
Answer:
(DOES NOT BELONG) Is Rational
(DOES NOT BELONG) Is not Irrational
(DOES NOT BELONG) Is not an integer
(DOES NOT BELONG) Not a Whole
(DOES NOT BELONG) Not Natural
Step-by-step explanation:
This is a fraction with a square root.
Fractions:
Are Not Whole (square root cancels this)
Are Rational BUT since this has a square root, it is not.
Are not natural
Are not integers (Whole numbers that ARE NOT fractions)
So basically from what I have learned, square root cancels literally everything.
Jules cut 2.75 inches from a metal rod. The metal rod is now 10.5 inches long. Which equation can be used to find the length of the metal rod before it was cut? Group of answer choices
Answers
L = 10.5 + 2.75
What are the answer choices?
Answer:
The solution for the equation 1,056=b+670
Step-by-step explanation:
Help asappp , What is the slope of a line perpendicular to the line whose equation is
3x + 6y = –18. Fully reduced
Answers
Answer:
2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
3x + 6y = - 18 ( subtract 3x from both sides )
6y = - 3x - 18 ( divide all terms by 6 )
y = - [tex]\frac{1}{2}[/tex] x - 3 ← in slope- intercept form
with slope m = - [tex]\frac{1}{2}[/tex]
Given a line with slope m then the slope of a line perpendicular to it is
[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{-\frac{1}{2} }[/tex] = 2
Slope of the line perpendicular to given line 3x + 6y = –18 is 2
What is slope intercept form and relation between slopes of two perpendicular lines ?The slope intercept of a line is given : y = m x+ c
y is y coordinate, x is x coordinate, m is the slope of the line
c is y- intercept of the line
If given that the slope of two lines are m₁ and m₂ then these lines are perpendicular, if the product of their slopes is -1 or m₁ *m₂ = -1
Given line is 3x + 6y = –18
Subtract 3x from both sides
⇒ 3x +6y -3x = -3x-18
⇒ 6y = -3x-18
⇒ y =(-3/6)x -18 /6 = (-1/2) x -3
comparing it with slope intercept , slope = -1/2
let the slope of line perpendicular to given line is m
then m.(-1/2) = -1
⇒ m = 2
∴Slope of the line perpendicular to given line is 2
Also, learn more about the slope intercept form from the link below:
brainly.com/question/9682526
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8.h=7
108 18 what is h
Answers
Answer:
its 8.7× 108 18
Step-by-step explanation:
ye thats basically it solve it now
please answer all these math qestions QUICK DUE IN A HOUR PLEASE HELP !!!!!!!!!!!!!!! 1.A tablet was on sale for 7/8 of the original price. If the original price was $240, what was the sale price?
2.Christian's family went on a road trip. They stopped 9 times for gas. On average, they spent about 8 minutes at the gas station each time they stopped. On their trip, about how much time did they spend stopped for gas?
3.Lisa was late to class 12 times in the month of September. Each time she was late, she missed 3 1/2 minutes of class. How many minutes of class did she miss in the month of September?
4.Alexis hammered a nail into a piece of wood. Each time she hammered the nail, it moved 1/7inch. If she hammered the nail 14 times, how much did the nail move?
5.A 16.2 ounce box of Honey Nut Cheerios costs $4.86. How much did each ounce of the cereal cost, rounded to the nearest cent?
(please help answer all of these please all of these are due today at night ) (all of these are Rational Numbers Word Problems)
Answers
2. 72 min
3. 42 min
4. 2 inches
5. I think $3.33
I hope this helps!
Answer:
1, 210.
2. 72 minutes.
3. 42 minutes
4. 2 inches.
5. 3 cents.
Step-by-step explanation:
1. First, divide 240 by 8, which will get you 30, now multiply 30 by 7 and you will get 210 which is your answer.
2. Your keyword here is times. So you know you will multiply. So just multiply 8 and 9, and your product is 72, so 72 minutes.
3. Multiply 3 1/2 by 12, or convert your fraction to a decimal, which in decimal form is 3.50. Your product would be 42.
4. Multiply 1/7 by 14, you should get 14/7, which is an improper fraction. Divide 14 by 7 and you will get 2 inches.
5. So here you have to find the unit rate. Divide the price by the quantity.
4.86/16.2=0.297530865
Round the number up, which would be 3. So it would be 3 cents
Hope this helps :)
what is the mean of this set
0,100,100,100,100
Answers
Answer:
80
Step-by-step explanation:
Mean simply means the average. To calculate the average of all these numbers, add them all up together and divide that number by how many numbers you added.
A simple equation you can use is:
[tex]\frac{the sum of the terms}{the number of terms}[/tex]
To calculate the mean of the set : 0,100,100,100,100
= 0 + 100 + 100 + 100 + 100
= 400 / 5
= 80
The mean of the set is 80.
What is the value of x in the equation
3x - 4y = 65:
when y=4?
Ox=13 1 / 2
x=21 1 / 3
X =23
O
x=27
Answers
10(6 + 4) ÷ (2³.7)² =
Answers
Answer:
25/784
Step-by-step explanation:
Which graph below shows the solution set for the inequality b ≥ 5?
pls help meeeeeeeee
Answers
Answer: we can’t see graphs but I can help you if you show me them
Step-by-step explanation:
Hey, I need help with a math question. thank you <3
Answers
Answer:
B
Step-by-step explanation:
What is the value of x?
Answers
Answer:
10
Step-by-step explanation:
5x - 17 = 3x + 3 (vertically opposite angles)
5x - 3x = 3 + 17
2x = 20
x = 20/2
x = 10
hope it helps you!
I will give brainliest to whoever answers this!
Answers
PLSSSSSS!!!! HELP ME I WILL MARK YOU!!!!!!! MATH!!!!!!!!!!!!!!
Answers
Answer:
-24
Step-by-step explanation:
-1(3^2)+(-15)
-9+(-15)
-24
Answer:
-24
Step-by-step explanation:
if n=-1, p=3, and q=-15, then the equation would be -1(3)^2+(-15)
Follow PEMDAS.
-1(3)^2+(-15)
-1x3^2-15
-1x9-15
-9-15
**-24**
hope this helps! : )
(AICE MATH) i need help please
Answers
Answer:
How can i help?
Step-by-step explanation:
To get to work in the morning, Amanda cycles for 10 miles at the rate of 12 mph. She makes a 10 minutes stop for a cup of coffee, and then rides a bus for 15 minutes. The speed of the bus is 45 mph.
A)At what rate, in mph, would Amanda have to cycle to get to work by 9:45 am if she leaves her house at 8:30 am and she wants to have a coffee break that is 5 minutes longer than usual?
B)At what rate, in mph, would Amanda have to cycle to get to work by 9:45 am if she leaves her house at 8:30 am she wants to have a coffee break that is 10 minutes longer than usual?
Answers
Answer:
8:25 am
Step-by-step explanation:
Answer:
A. 13.33
b.15
Step-by-step explanation:
need help on finding the perimeter in feet
Answers
Answer:
30 ft
Step-by-step explanation:
7.5 + 12.5 + 10 = 30 ft
In efforts of improving their orofit margins, a company is considering creating their own manufacturing plant for their product. It had a start-up cost of 25,000 to build the plant. This plant will drop the production cost down to $15 per item. If each item sells for $50, then how many items would it take to get an overall profit of $100,000 for the year?
Answers
Answer:
To get an overall profit of $100,000, then 3,571 items is needed to be produced
Step-by-step explanation:
Mathematically;
Profit = Revenue - Production cost
In the question, we are told that the profit we are expecting is $100,000
Let the number of items to be produced for sales be x items
Now let’s look at the production cost ;
The production cost will be number of items for sale * production cost = 15 * x = $15x
Now, we need to add the start-up cost to the production cost to get the total amount spent on production;
Mathematically the total amount would be = $25,000 + $15x
Let’s look at the revenue;
The revenue will be selling price of each item * price of each item;
Mathematically, that would be 50 * x = $50x
So therefore;
50x - (25,000 + 15x) = 100,000
50x -25,000 -15x = 100,000
35x = 100,000 + 25,000
35x = 125,000
x = 125,000/35 = 3571.42 which is approximately 3,571 items
A system of equations can be written to represent coln and pricing problems. True or False.
O True
O False
Answers
plz help will award brainliest
Answers
Answer:
After 5 hours.
35 bacteria cells.
Step-by-step explanation:
Andy’s population is represented by [tex]B=6x+5.[/tex]
Samantha’s population is represented by [tex]B=2^x+3[/tex]
Where B represents the total population given the number of hours x.
We want to find at what hour will their population be the same. We are told to use graphing technology.
Graphing them, we will get the graphs below.
Graphically, their population will be the same where the two graphs intersect.
So, we can see that they intersect at (5, 35).
Therefore, after 5 hours, the total number of bacteria cells for both experiments will be the same.
And the total number of bacteria at that time will be 35 bacteria cell.