Answers
Answer:
-5 ± √5² - 4 · 1 · 4
2 · 1
Step-by-step explanation:
ax²+bx+c=0 (quadratic equation)
x= -b ± √b² - 4ac
2a
a= 1
b= 5
c= 4
-5 ± √5² - 4 · 1 · 4
2 · 1
Related Questions
Write the following expressions without using absolute value.
|y-x|, if y>x
Answers
Answer:
y-x
Step-by-step explanation:
as y>X so y-x is positive
hence the required expression is y-x
Grade 9 maths!!! Due tonight
Answers
Answer:
a. 7 by 21
b. a(-12, 2), b(-12, -5), c(9, -5)
Step-by-step explanation:
AD is 3 times the length of AB. X can be the length of AB. Then 3x would be the length of AD. The perimeter is 56, which would also be 3x + x + 3x + x which is 8x. This gives us 8x = 56, meaning that x is 7, or the length of AB is 7. Because AD is 3 times the length of AB (which is 7), AD = 21. Therefore, the dimensions of the rectangle ABCD is 7 by 21.
Coordinates of A have to be 21 units away from D since AD = 21. It goes in the left direction, meaning that 21 is subtracted from 9 (since this is a horizontal edge involving x coordinates) while the y value remains the same. The result is (-12, 2). For coordinate B, it has to be 7 units away from A downwards since AB = 7. This means that you subtract 7 from 2 (involving only the y coordinates), resulting in (-12, -5). For coordinate C, it has to be 21 units from B since BC = AD = 21. Because C is right compared to B, you have to add 21 to -12 (involving only the x coordinate) resulting in (9, -5).
WILL GIVE BRAINLIEST Can someone please help me with this and explain???!:))) thank you:))))
Answers
Answer:
See below ↓
Step-by-step explanation:
Part A
One revolution = circumference= πd= 22/7 x 56= 22 x 8= 176 feetPart B
Entire ride = 15 x 1 revolution= 15 x 176= 2640 feetwhat's the periotic table
Answers
Answer:
the table in which element are systematically arranged into various period based on their similar properties is called periodic table
Answer: it is a table of all the elements and shows you all the abbreviations for each one.
Step-by-step explanation:
there is a picture attached if you want to see what it looks like.
It basically just tells and shows you about all the different materials and/or elements.
Hope this helps! :)
please help! pleaseeeeee
Answers
Step-by-step explanation:
First you do pie then you will get 616 then you divide 616 by 2 and youll get 308 then yoi do it again and youll get 154
PLEAASE SOMEONE HELP ME IM SO STUCK
finish the table using the equation y= x/2
Answers
PLEASE HELP!!! Sari stood at a point measured 20 meters away from the base of building A. Turning 40° to building B, she determined that the base
of that building was 25 meters away. How far apart were the buildings? Use a calculator if needed.
Answers
Answer:
x = 16.71m
Step-by-step explanation:
KL² = KX² + LX² - 2KX × LX × cos(KXL)
x² = 26² + 20² - 2 × 26 × 20 × cos(40°)
x = 16.713m ≈ 16.71m
PLEASE MARK ME AS BRAINLIEST AND HAVE A NICE DAY :)
Can anyone help me with this question please ?
Answers
Answer: hard work
Step-by-step explanation: I dint know what your learning but it’s not easy
Solve for x.
-2(x + 74) = -158.00
Answers
Answer:
Hi I'm always here to help!!!
___________________________
x = 5
___________________________
Have a great day!!!!!!!
What are the zeros of the function y=6x^2-11x+3
Answers
y = ax^2 -bx +c
y = 6x^2 - 11x + 3
Multiply a and c.
6 x 3 = 18
Identify b, b= -11
We need to think of 2 numbers that when added, will give us the b value -(11) and when multiplied, will give us (ac) 18.
-9 + -2 = -11
-9 • -2 = 18
Now, we rewrite the equation using these 2 numbers.
y = 6x^2 - 9x - 2x + 3
Now, we put brackets around the first 2 and last 2 terms.
y = (6x^2 - 9x) (-2x + 3)
Now, simplify the two sets of brackets individually. You will find that the things left inside the brackets will be the exact same.
y = -3x(2x + 3) -1(2x + 3)
Attach the 2 coefficients together and rewrite.
y = (-3x - 1)(2x + 3)
Since we are solving for zeroes, make y = 0
0 = (-3x - 1) (2x + 3)
Both of these binomials equal 0, we must evaluate them separately.
0 = -3x - 1
3x = -1
x = -1/3
Second one:
0 = 2x + 3
-3 = 2x
x = -3/2
zeroes: (-1/3) , (-3/2)
A cylinder has a height of 9 millimeters and a radius of 11 millimeters. What is its volume? Use ≈ 3.14 and round your answer to the nearest hundredth.
Answers
Answer:
3419.46 mm3
Step-by-step explanation:
volume of cylinder = area of circle x heoight
A of circle = pie r sqy = 3.14 x 11 x 11 = 379.94
379.94 x 9 = 3419.46
Nancy spends 1/3 of her monthly salary on rent, 0.1 on her car payment, 1/12 on food, and 20% on the bills. She has $680 left for other expenses. What is Nancy's monthly salary?
Answers
Answer:
have a good day
Step-by-step explanation:
rump 2020
Let dnbe the number of n-digit positive integers using only the digits 1, 2, 3, 4, 5, 6, or 7 (with repetition permitted), such that no two consecutive digits are even
Answers
The nth term of the sequence whose integers are between 1 -7 such that there is the permission of repetition but no two consecutive digits must be even is 1.254 × 10¹¹
What are consecutive numbers?
Consecutive numbers are those numbers that succeed each other in increasing order from least to greatest. The numbers that are given:
1, 2, 3, 4, 5, 6, or 7 are all consecutive.Now, suppose a (n) denotes the number of n-digit positive integers as stated in the question, thereby using:
1, 2, 3, 4, 5, 6, or 7 with the permission of repetition; no two consecutive digits are even.Then, the number of n can be computed as n!
= (7!) × (6!) × (5!) × (4!) × (3!) × (2!) × (1!)
= 1.254 × 10¹¹
Learn more about consecutive numbers here:
https://brainly.com/question/26352026
The nth term of the series of integers is between 1 -7 such that there is the permission of repetition but no two consecutive digits must be even is 1.254 × 10¹¹
What are consecutive numbers?Consecutive numbers are those numbers that succeed by each other in increasing order from lowest to greatest such are 1, 2, 3, 4, 5, 6, or 7.
Now, suppose n represents the number of n-digit positive integers.
1, 2, 3, 4, 5, 6, or 7 with the permission of repetition no two consecutive digits are even.
Then, the number of n can be calculated as n!
= (7!) × (6!) × (5!) × (4!) × (3!) × (2!) × (1!)
= 1.254 × 10¹¹
Learn more about consecutive numbers here:
brainly.com/question/26352026
#SPJ4
this morning carlos enters the room late. the distance from the road from their house to the school is 100 meters but he could travel it for 50 seconds what is his speed
Answers
Answer:
2 m/s or 7.2 km/h
Step-by-step explanation:
Time = 50 seconds
Distance = 100 meters
Velocity = distance/time = 100/50 = 2 m/s or 7.2 km/h
[tex]\qquad \qquad \huge \pink {\sf{☁Answer☁}} \\ \\ [/tex]
[tex] \large \purple{ \rm{Given↦}}[/tex]
Distance by road from their house to the school is 100 m.Time Given 50 sec[tex]\rule{70mm}{2.2pt}[/tex]
[tex] \large \purple{ \rm{To \: find↦}}[/tex]
Carlos speed[tex]\rule{70mm}{2.2pt}[/tex]
[tex] \large \purple { \rm{Assumption↦}}[/tex]
let the speed be x[tex]\rule{70mm}{2.2pt}[/tex]
[tex] \large \purple { \rm{ To \: find \: speed \: we \: use↦}}[/tex]
[tex] {\boxed{ \rm{Speed= \frac{ Distance } {Time}}}}[/tex]
[tex]\rule{70mm}{2.2pt}[/tex]
[tex] \large \purple{ \rm{Substitute \: value \: according \: to \: formula. \: }}[/tex]
[tex] \large \rm{s = \frac{100}{50} }~~~~~~~~~~~~~~~~~~~~ \\ \\ \large \rm{s = \cancel \frac{100}{50} }~~~~~~~~~~~~~~~~~~~~ \\ \\ \large \rm{s = 2 m/s \: or \: 7.2km/h }[/tex]
[tex]\purple{\rule{15mm}{2.9pt}} \red{\rule18mm{2.5pt}} \orange{ \rule18mm{2.5pt}}[/tex]
[tex]\sf{\:мѕнαcкεя\: ♪...}[/tex]
PLEASE HELP!!! I am stuck!!
How do I get question c)
Answers
Answer:
When the actual temperature is -14 degrees Celsius, the wind chill equivalent temperature would be -22.2 degrees Celsius.
When the actual temperature is 3 degrees Celsius, the wind chill equivalent temperature would be 0.6 degrees Celsius.
Step-by-step explanation:
There is a + 1.2 pattern going right. So each time you increase the actual temperature by 1, you increase the wind chill equivalent temperature by 1.2
∠C and ∠D are complementary.
Let m∠C=(5x)° and m∠D=(7x−6)°.
What is the value of x?
Enter your answer in the box. 10 points!!
Answers
Answer:
x = 8
Step-by-step explanation:
The sum of the measures of two complementary angles is 90°.
m<C + m<D = 90°
5x + 7x - 6 = 90
12x = 96
x = 8
Pls answer
5= -5 (6n + 8)
Answers
Answer:
the value of n is -1.5
Step-by-step explanation:
I hope the question was to find the unknown.
Answer:
n= -3/2
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Exact Form:
n=−32
Decimal Form:
n=-1.5
Mixed Number Form:
n=−112
Jin's family took a road trip to Niagara Falls. Jin slept for the last 24 miles of the trip. If the total length of the trip was 400 miles, what percentage of the total trip had they travelled when Jin fell asleep?
Answers
Working alone, it takes Castel 12 hours to pick forty bushels of apples. Mei can pick the same amount in 10 hours. If they worked together how long would it take them?
Answers
Answer:
5.5 hours
Step-by-step explanation:
dibide by 2 one is 5 and one is 6, middle. is 5.5,
Simplifying into an equivalent expression, fill in the missing pieces:
Answers
contractor charges $1,200 for 100 square feet of roofing installed. At this rate, how much does it cost to have 1,100 square feet installed?
Answers
Answer:
1200
Step-by-step explanation:
Answer:
$13200
Step-by-step explanation:
1200$ = 100
? =1100
(1200*1100) ÷ 100
(1 320 000) ÷100
$13200
Find the measures of the
4 22.
140°
to
110°
i just need 22 and 23 pls
Answers
Answer:
Absolute Value measures the distance a number is from zero on the number line. ... 20) 2 - 5 = -3 21) -7+4 = -3 22) 20 - 15 = 5 23) -11 - 20 = -31
Step-by-step explanation:
Find the volume of the prism.
Answers
Answer:
the volume is 210
Step-by-step explanation:
length x width x height
length=6
width=5
height=7
6 x 5 = 30
30 x 7 = 210
solve pls brainliest
Answers
Answer:
2n+22
Step-by-step explanation:
22 more than twice a number
n represents the number.
twice a number --> 2n
22 more than --> +22
2n+22
Hey there!
Guide:
• Difference means subtract/subtraction
• Product means multiply/multiplication
• Quotient means divide/division
• Sum means add/addition
• “more than”, “greater than” or “increased by” either means add/addition or >
• “less than, “smaller than”, or “decreased by” either means subtract/subtraction or <
• “unknown number” is a number we’re NOT so sure yet so we label them as variables. A variable is any letter from A to Z.
ANYWAYS, LETS ANSWER the QUESTION
“22 more than 2 twice a number”
• Since, your instructions say that “n” will be the unknown number, we should label the unknown number as that!
“22 MORE THAN twice a NUMBER”
This could be simply written as:
“22 > 2n” or even “2n + 22”
But we will just say that’s [2n + 22] would mostly fit this scenario
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
someone explain how to do this please
A: square root of 96
B: square root of 48
C:square root of 16
D:8
Answers
8 squared - 4 squared = 48
The next step is getting the square root of the result. Thus revealing B as the answer.
Answer:
B. Square root of 48
Step-by-step explanation:
Using Pythagorean theorem. A^2 = B^2 + C^2
4^2 + x^2 = 8^2
16 + x^2 = 64
x^2 = 48
x = square root of 48
Find the distance between the points (-5,-3) and (0,9). Round your answer to one decimal place, if necessary.
Answers
√ 5^2+(9+3)^2. Remove the 0 since 5+0=5
√25+12^2. Evaluate
√ 25+134. Then just add
√ 169. Evaluate
13 is the answer
Moses and Louis ran laps after school to train for the basketball team. The ratio of the number of laps Moses ran to the number of laps Louis ran was two to three.
If Moses ran 8 laps, how many laps did Louis run?
Answers
Step-by-step explanation: the ratio was two to three Moses ran 8 laps meaning 2 multiplied by 4 now you multiply 3 times 4 to get your answer
1. Find the length of the arc shown in red:
2. Find the area of the circle:
Answers
Answer:
Step-by-step explanation:
Select the correct answer. robin randomly selects a number between 1 and 20. what is the probability that the number selected is the square of a natural number? a. b. c. d. e.
Answers
The probability that the number selected is the square of a natural number will be [tex]\frac{1}{5}[/tex].
What is probability?Probability means possibility. It deals with the occurrence of a random event. The value of probability can only be from 0 to 1.
Its basic meaning is something is likely to happen. It is the ratio of the favorable event to the total number of events.
P is the probability
F(E) is the favorable event
T(E)is the total event
The probability is found as;
[tex]\rm P = \frac{F(E)}{T(E)} \\\\ \rm P = \frac{4}{20)} \\\\ \rm P = \frac{1}{5}[/tex]
Hence the probability that the number selected is the square of a natural number will be [tex]\frac{1}{5}[/tex].
To learn more about the probability link is given below.
https://brainly.com/question/795909
Answer:
Option D is the correct answer
Step-by-step explanation:
D. [tex]\frac{1}{5}[/tex]
Can pls someone help me? and show how it did it?
Answers
Answer:
You have no image so how could i solve?
Step-by-step explanation: