Jodie is on the swim team. Below are four of her times swimming 100 meters.
22.98 seconds, 23.09 seconds, 23.06 seconds, 22.83 seconds
What is the difference between her best time and her worst time?
A.
0.03 second
B.
0.23 second
C.
0.11 second
D.
0.26 second
The difference between her best time and her worst time is equal to 0.26 seconds.
What is algebra ?
Algebra is a branch of mathematics that deals with various symbols and the arithmetic operations such as division , multiplication , etc.
Jodie has to swim for 100 meters. The four of her times to cover this distance are 22.98 seconds, 23.09 seconds, 23.06 seconds, 22.83 seconds.
Let's find the time per sec to swim at each instances.
So ,
100 meters in 22.98 seconds meant :
= 100 / 22.98
= 4.35 m/sec
Similarly ,
100 meters in 23.09 seconds meant :
= 4.33 m/sec
100 meters in 23.06 seconds meant :
= 4.34 m/sec
100 meters in 22.83 seconds meant :
= 100 / 22.83
= 4.38 m/sec
So , we can find out that Jodie swims distance of 100 meters fastest on speed of 4.38 m/sec in 22.83 seconds and slowest on speed of 4.33 m/sec in 23.09 seconds.
The difference between her best time and her worst time is :
= 23.09 - 22.83
= 0.26 seconds
Therefore , the difference between her best time and her worst time is equal to 0.26 seconds.
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which statement describes the graph of the function f(x)=x^2-1/x^2-2x+1
A. there is a hole at x=-1
B. there is a vertical asymptote at x=-1
C. the y-intercept is y=-1
D. there is a horizontal asymptote at y=-1
Answer:
The Y-intercept is -1
Step-by-step explanation:
M*thway is a pathway to many abilities some considered to be... unnatural
Statement (C) the y-intercept is y=-1 describes the graph of the function.
What is a function?It is defined as a special type of relationship, and they have a predefined domain and range according to the function every value in the domain is related to exactly one value in the range.
We have a function:
[tex]\rm f(x) = \dfrac{x^2-1}{x^2-2x+1}[/tex]
The above function is a rational function.
The denominator cannot be zero
x² - 2x + 1 ≠ 0
(x - 1)²≠ 1
x ≠ 1
To find y-intercept plug x = 0
f(0) = -1
Thus, statement (C) the y-intercept is y=-1 describes the graph of the function.
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What's the exact amount of numbers that have been discovered in PI π?
First correct answer will be marked brainliest
Answer:
It has an infinite amount as the decimal keeps going to over 1 million digits and beyond.
Step-by-step explanation:
kim makes $12 per hour . write an equation showing the relationship between her total pay (p) and the number of hours she works (h)
Answer:
C) P = 12H
Step-by-step explanation:
This is because she makes 12 dollars every hour so it'll be 12 times the number of hours.
35°
50°
?
Find the measure of the missing angle:
Answer:
i think the answer would be 95 degree. im not absolutley positive though
Step-by-step explanation:
i added 35 and 50 and got the sum of 85 then i subtracted 85 from 180 and got 95
feedback is appreciated.
(i'm not gonna beg for brainliest)
Tim has a bag of 36 orange-flavoured sweets and Peter has a bag of 44 grape-flavoured sweets. They have to divide up the sweets into small trays with equal number of sweets; each tray containing either orange-flavoured or grape-flavoured sweets only. If there is no remainder, find the largest possible number of sweets in each tray.
Answer:
the largest possible number for each would be dividing it by two so 36 divided by two is 18 and 44 divided by two is 22
so for the orange the largest number would be 18
and for the grape the largest number would be 22
Lin measured the diameter of a circle in two different directions. Measuring vertically, she got 3.5 cm, and measuring horizontally, she got 3.6 cm.
Which of the following are possible reasons why these measurements differ?
Select all that apply.
A. These measurements could be rounded, not exact
B. The diameter of a circle can vary when measured from different points
C. The thickness of the circle could have affected the measurements
D. Lin did not measure across the widest part when measuring vertically
E. The shape is not quite a circle, because a perfect circle is very hard to draw
What do I choose?
Answer:
I think It is C if Not pick A
Step-by-step explanation:
Type the correct awnser in the box
The value of x is _____ and the value of y is____.
Answer:
X= 60 Y= 50
Step-by-step explanation:
180-50-60= 70 (not marked angle)
180-50-70= 60 (angle x)
180-70-60= 50 (angle y)
Answer:
x=60
y=50
Step-by-step explanation:
I think this is right.
Need help due in a few minutes. Plzzzzzz
Answer:
7 seconds
Step-by-step explanation:
set the equation to 0 because the water is the 0 point, and solve, you will get 7 and -5. It is not possible to have negative seconds so 7
The sum of the measures of ∠QRT and ∠TRS is 180∘.
What is the measure of ∠TRS?
Enter the correct answer in the box.
Answer:
90° i think..........
Use the distance formula to find the distance between cach pair of points. If necessary,
round to the nearest tenth.
C (-2,6), D (10,-8)
Answer:
[tex]d \approx 18.4[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra II
Distance Formula: [tex]d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]Step-by-step explanation:
Step 1: Define
Point C (-2, 6)
Point D (10, -8)
Step 2: Find distance d
Substitute: [tex]d = \sqrt{(10+2)^2+(-8-6)^2}[/tex]Add/Subtract: [tex]d = \sqrt{(12)^2+(-14)^2}[/tex]Exponents: [tex]d = \sqrt{144+196}[/tex]Add: [tex]d = \sqrt{340}[/tex]Simplify: [tex]d =2 \sqrt{85}[/tex]Evaluate: [tex]d = 18.4391[/tex]Round: [tex]d \approx 18.4[/tex]population screening of risky alcohol and drug use via internet and interactive voice response (ivr): a feasibility and psychometric study in a random sample
There were substantial differences in alcohol and drug usage by the manner of administration, however, problem drinking and drug use were present in 21.1% and 2.8% of the group, respectively.
What do you mean by population screening of risky alcohol and drug?The topic of whether data from population surveys could be gathered more quickly and affordably than using paper questionnaires is brought up by the widespread accessibility of computer-based technologies like the Internet and Interactive Voice Response (IVR) systems. The issue extends to whether it is possible to assess the prevalence of such behaviors in the general population when dealing with potentially stigmatized behaviors like problematic alcohol and drug use without endangering the accuracy of the findings. This study evaluates the reliability, response rate, and problematic alcohol and drug use of the Internet and IVR versions of the AUDIT and DUDIT. Randomly chosen from the Swedish general population, 5000 people were contacted by mail and asked to respond to the AUDIT and DUDIT questionnaires online or over the phone.
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Help I’m bad at math
Answer:
None of the answers are correct.
Step-by-step explanation:
Maria's answer is incorrect:
1. "-1" is the y-intercept. 3x/4 is your rise/run.
2. Start from -1 on the y-axis.
3. Go up 3 units above, then 4 units to the right.
4. This leads up to being not on the line.
Peter's answer is incorrect:
1. "-1" is the y-intercept. -4x/3 is your rise/run.
2. Start from -1 on the y-axis.
3. Go down 4 units below, then 3 units to the right.
4. This leads up to being not on the line.
Pls help pls
10 POINTS pls
Answer:the answerrr is 55tktktng
Step-by-step explanation:
Answer:
f(x)=-2x-5
f= -2 (-6) -5
f= 12-5
f= 7 so the answer is A
the answer is C, y= -200x +6000
A function, fox), models the depth of water in a wading pool that is filling at a rate of 11 gallons per minute. Which of these describes why fx) can be considered a linear function? I. For every 1 minute interval, the depth of water in the wading pool increases by the same amount. II. The function grows by equal factors every minute. III. The slope of the function is constant. I only I and III only
1
Step-by-step explanation:
Which of these triangles appears not to be congruent to any others shown here? Check all that apply.
Answer: b & e
Step-by-step explanation:
a and c appear congruent as do d and f
Can somebody answer this question please? With explanation.
Best answer gets 5/5 stars + Brainliest
Answer:
23
Step-by-step explanation:
i need brainliest. i promise it is correct.
Divide the following polynomial expression.
(n^4 +5n^3+9n^2) / 9n^3
-3x + 7 (-6 – 5c)
C= 7
x = -9
Answer:
=−260
Step-by-step explanation:
Please help me, i will give brainiest !!
Cora ran 3 miles last week and will run 7 miles per week from now on. Hana ran 9 miles last week and will run 4 miles per week from now on.
In the answer box,
Write a system of equations to describe this scenario. Identify what the variables mean in the context of the problem.
Answer:
If Cora runs 1/2 mile per week and x is the number of weeks, then she will run 5+1/2x. Then determine how many weeks are in two and a half months (depends on which month it is as there are less weeks in February than in January!) but we could estimate 6.
For Hana, you will have 3+ 3/4 x
Step-by-step explanation:
First equation is y=5+1/2 x and then plug 6 in for x to solve for y. the second equation is y=3+3/4x and plug in 6.
The system of equations to describe this scenario are
y = 3 + 7xy = 9 + 4xThe variable x means the number of weeks they ran and the y variable means the total distance they covered in miles .
The situation can be modelled like a linear equation.
Therefore,
y = mx + b
where
m = slope
b = y-intercept
Cora race will be as follows:
y = 3 + 7xHana race will be as follows:
y = 9 + 4xThe variable x which is the independent variable is the number of weeks each of them ran in the equation.
The variable y which is the dependent variable is the total distance covered in miles.
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Solve for
8 - 6r + 3 = 5
Answer:
r = 1
Step-by-step explanation:
8 - 6r + 3 = 5
Combine like terms
11 - 6r = 5
Subtract 5 from both sides
6 - 6r = 0
Add 6r to both sides
6 = 6r
Divide both sides by 6
1 = r
Pls help I’ll give you brainly
the plan for a solid shape -maths
please help
Which situation is an example of an observational study?
O A. Finding the number of red jellybeans placed in an average jar of
O B. Having customers fill out a questionnaire about their favorite
O c. Dividing a class into thirds, giving each third a different amount of
O D. Placing different groups of people in different colored rooms and
jellybeans by counting
brand of toothpaste
time to read, and then testing comprehension
recording their mood
Answer:
it finding the number of jelly beans
Step-by-step explanation:
Having customers fill out a questionnaire about their favorite brand of toothpaste is an example of an observational study.
Option B is the correct answer.
What is an observational study?An observational study is a research method in which the researcher observes and records behavior or data without directly manipulating the variables.
We have,
In an observational study, the researcher simply observes and records data as it naturally occurs, without interfering or influencing the study participants.
This type of study is often used in social science research, as well as in medical research and epidemiology, to study the relationships between variables and to identify patterns or trends in the data.
Observational studies can be either cross-sectional, where data is collected at a single point in time, or longitudinal, where data is collected over an extended period of time.
In this case,
The researchers are simply observing and collecting data without actively manipulating any variables or performing any interventions.
Thus,
Having customers fill out a questionnaire about their favorite brand of toothpaste is an example of an observational study.
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HELP ASAP I DONT HAVE TIME AND IT ALSO DETECTS IF ITS RIGHT OR WRONG
Answer:
0.915 meters
Step-by-step explanation:
0.305 x 3 = 0.915
Answer:
0.915
Step-by-step explanation:
I need help plsssss ...... name the transversal that connects them and classify the angle pair
Answers:
The transversal line is line s
The angles 6 and 16 are same side exterior angles
=================================================
Explanation:
Erase everything but lines p, q, and s. Also, we'll keep angles 6 and 16 as well. Check out the diagram below.
As you can see from the diagram, lines p and q act like the parallel lines. Imagine we can shift line p to make it horizontal so it's parallel to line q. This might help show that angles 6 and 16 are same side exterior angles.
Note: Because line p is not parallel to line q, this means angles 6 and 16 are not supplementary (they don't add to 180).
Someone help please thx in advance
what is the simplest form of 1/3 divided by 1/9
Answer:
3
Step-by-step explanation:
3 is the answer to the question
4x^2 + 4x - 3 quadratic trinomial ans pls
Answer:
(2x-1)(2x+3)
Step-by-step explanation:
4x^2 + 4x - 3
4x^2 + 6x - 2x - 3
2x(2x + 3) - 1(2x + 3)
(2x - 1) (2x + 3)
Consider the polynomial function q(x) = -4x5+2x4
3x2 + 12x.
What is the end behavior of the graph of q?
Answer:
B
Step-by-step explanation:
If it’s for khan positive , negative, negative, positive