HELP ME PLEASE The roots of a quadratic equation can be found using the graph what are the roots of these equations?
Answers
(-1,4)
Explanation:
On the left if you estimate it brings to a -1 and on the right if you count boxes bring to a 4
Hope its correct
Answer:
the roots of this quadratic expression are: x = -1 and x = 4
Step-by-step explanation:
You need to find at which x-values the graph crosses the x-axis (this is when y = 0, and therefore the roots of the quadratic equation represented via the graph).
In our case notice that the graph crosses the x-axis at the points:
x = -1 (on the left), and x = 4 (on the right)
Therefore the roots of this quadratic expression are: x = -1 and x = 4.
Related Questions
Find the slope of the line that passes through the points (2,5) and (-8,5).
Only give the number of the slope, nothing else.
Answers
--------
x₂-x₁
=
5-5
--------
-8-2
0
-----
-10
slope = 0
(a) has no solutions.
(b) has infinitely many solutions.
(c) has exactly one solution.
Answers
Answer and Step-by-step explanation:
Given
ax + by = c
qx + ry = s
(a) the equation has no solutions if a/q = b/r ≠ c/s, when this happens, we say the system of equations has no solution. For example
x + y = 3
x + y = 5
Subtracting first equation from the second we have:
0 = 2 which is impossible.
(b) the equations have infinite solutions if a/q = b/r = c/s, for example
x + y = 2
x + y = 2
Subtracting the first equation from the second we have
0 = 0, since this is always true, then it has infinite solutions.
(c) the equations have unique solutions if a/q ≠ b/r, for example
x + y = 2
x – y = 1
Adding the first and second equation we have
2x = 3, we can get x from here and definitely y, so we have just one solution.
Victor has some model planes. Last weekend, Victor and his grandfather built four more model planes to add to his collection. Now Victor has a total of 42 model planes.
Part A: In the first box, enter an equation to represent the number of planes, x, Victor originally had.
Part B: In the second box, enter the number of planes represented by x in this situation.
Answers
Answer:
x = 42 - 4
x = 38
Step-by-step explanation:
Given that :
Initial number of plane models = x
Number of additional models built = 4
Total number of planes = 42
Total = initial amount + additional amount
42 = x + 4
Make x the subject
42 - 4 = x + 4 - 4
x = 42 - 4
X + 4 = 42
X = 42 - 4
X = 38
Consider the following sets of sample data:
A: $28,200, $34,300, $32,300, $20,800, $36,900, $20,600, $20,000, $29,600, $35,400, $20,200, $20,200, $38,100, $31,300, $38,600
B: 4.77, 3.46, 4.62, 3.30, 3.13, 3.01, 4.69,3.55, 3.57, 4.59, 3.65
Step 1 of 2: For each of the above sets of sample data, calculate the coefficient of variation, CV. Round to one decimal place.
Answers
Answer:
25.3% and 17.6%
Step-by-step explanation:
Perform the operation.
(-10x² + 9) + (8x2 – 5x + 7)
HELP ASAP PLS
Answers
Answer:
-2x² - 5x + 16
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
(-10x² + 9) + (8x² - 5x + 7)
Step 2: Simplify
Combine like terms (x²): -2x² + 9 - 5x + 7Combine like terms (Z): -2x² - 5x + 16What would the radius be?
Answers
Answer:
6m
Step-by-step explanation:
how many times does 9 go into 12?
Answers
Answer:
one time.
Step-by-step explanation:
HELP PLS IM CRYING I NEED IT PLSS ANSWER IT PLSSSSS
Answers
Answer:
C) 4k-24
A)10x+15x
Step-by-step explanation:
The line that contains a slope of 1/2 and passes thru the point (-2,-3)
Answers
Answer:
in this question what we have to do please can you tell
Make a visual model to show the number pattern for 5, 10, 15, 20, 25?
Answers
Answer:
It would be like counting up fives
Step-by-step explanation:
Answer:
It would be going up by 5 every time.
brainliest pls
Step-by-step explanation:
What is 7÷854 can you answer this question it is hard.
Answers
Answer:
0.00819672131 or 8.19x10^-3
just put it in a calculator
Answer:
Hey! so the answer is 0.00819672
Step-by-step explanation:
Just simply divide
Hoped this helped! Have a great day! Im Eve btw. Also consider marking this brainliest. Thank you in advanced if you do!✨
Identify the solution to the system of equations
4x-y=7
-12x+3y=-21
Answers
Answer:
Step-by-step explanation:
The equations are not independent. They represent the same graph.
There are an infinite number of solutions.
A group of 24 people need to take an elevator to the top floor. They will go in groups of eight. They are deciding who will take the elevator on its second trip. Find the number of possibilities.
Answers
Answer:there are 3 groups so yea
Step-by-step explanation:
18 times 3 is 24 so there will have to be 3 elevators
Which of these could be the value of x in the triangle below
Answers
Answer:
5
Step-by-step explanation:
If 35% of a number is 98 and 80% of the same number is 224, find 45% of that number.
Answers
9514 1404 393
Answer:
126
Step-by-step explanation:
If n represents the original number, we have
(35%)n = 98
(80%)n = 224
We want to find (45%)n.
(45%)n = (80% -35%)n = (80%)n -(35%)n
(45%)n = 224 -98 = 126
45% of the number is 126.
Corey invested $800 in a CD at a simple interest rate. After 24 months, his account was worth $1000.
How much interest did he earn?
What was his interest rate?
Answers
Answer:
made 25%
Step-by-step explanation:
Timothy brought in brownies for his class on his birthday.
.
.
Each box has 15 brownies in it.
He handed out 1 boxes.
of the brownies had nuts.
Problem:
How many brownies had nuts?
Answers
Answer:
Incomplete problem - reword
Step-by-step explanation:
3 brownies had nuts.
What is a Fraction?In mathematics, a fraction is used to denote a portion or component of the whole. It stands for the proportionate pieces of the whole. Numerator and denominator are the two components that make up a fraction. The numerator is the number at the top, and the denominator is the number at the bottom. The denominator specifies the total number of equal parts in the whole, whereas the numerator specifies the number of equal parts that were taken.
As per the given data:
Brownies in each box = 15
Boxes handed out = 1 [tex]\frac45[/tex]
Brownies with nuts = (1/9) of the brownies
Boxes handed out = 1 [tex]\frac45[/tex] = (9/5) boxes
Total brownies handed out = (9/5) × 15 = 27 brownies
Total brownies with nuts = (1/9) of 27 = (27/9) = 3 brownies with nuts.
Hence, 3 brownies had nuts.
To learn more on Fraction, click:
brainly.com/question/29264210
#SPJ2
(The given question is incomplete, the complete question is given below)
Timothy brought in brownies for his class on his birthday. Each box has 15 brownies in it. He handed out 1 4/5 boxes. 1/9 of the brownies had nuts. How many brownies had nuts?
A certain type of golfball is tested by a robot that hits the ball with a consistent impact force. The distances this type of ball travels in this test are normally distributed with a mean of 195195195 meters and a standard deviation of 555 meters. Suppose that quality control experts regularly collect random samples of 252525 distance measurements and calculate the sample mean distance in each sample. Assume that the measurements in each sample are independent. What will be the shape of the sampling distribution of the sample mean distance
Answers
Answer:
Approximately normal
Step-by-step explanation:
Since the population is normally distributed, the sampling distribution of the sample mean will also be normally distributed, even when the sample size is small.
The shape of the sampling distribution of the sample mean distance is approximately normal
What is Statistics?Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.
Given that The distances this type of ball travels in this test are normally distributed with a mean of 195 meters and a standard deviation of 5
meters.
Suppose that quality control experts regularly collect random samples of 25 distance measurements and calculate the sample mean distance in each sample
When a population is normally distributed, the sampling distribution of the sample mean x will also be normal regardless of sample size.
Since the distribution of distances is normal, the sampling distribution of the sample mean distance will also be normal.
Hence, the shape of the sampling distribution of the sample mean distance is approximately normal
To learn more on Statistics click:
https://brainly.com/question/29093686
#SPJ5
11.Write the equations of linear and exponential functions that pass through the points (0,9) and (1,3)
Answers
9514 1404 393
Answer:
y = -6x +9
y = 9·(1/3)^x
Step-by-step explanation:
In each case, the y-intercept is 9.
Linear
The slope is rise/run = (3-9)/(1-0) = -6, so the equation is ...
y = mx + b . . . . . . . slope m, intercept b
y = -6x +9
Exponential
The ratio of value at x=1 to that at x=0 is 3/9 = 1/3. That is the "growth factor," so the equation is ...
y = 9·(1/3)^x
A model chair has been designed using a scale 1 inch : 5 inches. The height of the
model chair is 4 inches in length. What would be the actual height of the chair?
Answers
Answer:
20 Inches is the actual height
Step-by-step explanation:
Okay so it means 1 inch = 5 inches. There are 4 inches. 4 x 5 = 20.
Find the height of the triangle if the area is 36 m 2
Answers
Answer:
Area=1/2bh
Given area of 36m^2
1/2(x)(x-1)=36
Multiply both sides by 2 to remove deminator
(x)(x-1)=72
X^2-x=72
X^2-x-72=0 then factor
(x-9)(x+8)=0
X=9,-8 however since area must be positive, take the absolute value of 8
1/2(9m*8m)=36m^2
If 2/3n = -6, then 1/3n =
Answers
The cook took out 54.8 grams of butter, she then found out that she took out 6.9 grams of butter more than she need. How much butter did she need?
Answers
Pat collected 54 cans of food for a food drive. This is 6 times as many cans
as Anne collected. How many cans did Anne collect? Select the correct
solution method below, using x to represent the number of cans Anne
collected
Answers
Answer:
54/6= X
54/6= 9
54 divided by 6 equals X
X = 9
Pls answer whoever answer right first will g Brainlyiest
Answers
Answer:
D the last one
Step-by-step explanation:
Can someone please help me
I’m not good at math and I need to multiply this
135
x 62
Answers
what does the denominator of 3/2 mean?
Answers
Hello!
The denominator is like the number under the line. So in this case, 2 would be the denominator.
~Sophia
An equation for a line is 3x + 3y = 18.
What are the slope and Y -intercept point?
Answers
Answer:
y = -1x + 6
slope ^ ^ y-intercept
Step-by-step explanation:
3x + 3y = 18
3y = -3x + 18
y = -1x + 6
hope this helps
Answer:
y int: 6 slope: -1
Step-by-step explanation:
Convert to y=mx+b format
3x + 3y - 18 = 0
3x - 18 = -3y
-1x + 6 = y
in mx+b format, m is the slope and b is the y-int:
m = -1
b = 6
An electrical completes 1/6 of job in 2/3 hours At this rate how many hours does it take the electrician to complete the job
Answers
Answer:
4 hours
Step-by-step explanation:
6 × 2 = 12
12 ÷ 3 = 4
4 hours is the correct answer
Glad I could help:)
2) A pair of jeans costs $80. The store is having a sale for 30% off. What would
the new cost of the jeans be? Show your work.
Answers
Answer:
$56
Step-by-step explanation:
$80 x .3 = $24
$80 - $24 = $56
You can also do $80 x .7 = $56.
Hope that helps!