What is the midpoint of the line segment that has endpoints (3,8) and (1,−4) ?
Answers
Answer:
D
Step-by-step explanation:
Midpoint Formula:
[tex]\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2}[/tex]
[tex]\frac{3+1}{2}[/tex] ⇒ [tex]\frac{4}{2}[/tex] ⇒ [tex]2[/tex]
[tex]\frac{8+-4}{2}[/tex] ⇒ [tex]\frac{8-4}{2}[/tex] ⇒ [tex]\frac{4}{2}[/tex] ⇒[tex]2[/tex]
[tex](2,2)[/tex]
Related Questions
The temperature in Australia is 95 degrees and decreasing at a rate of 4 degrees per day. The temperature in the US is 40 degrees and is increasing at a rate of 5 degrees per day. For how many days will Australia be warmer or the same as the US?
Answers
Answer:
For 6 days
Step-by-step explanation:
Here, we want to find the number of days at which Australia will have a bigger temperature or the same temperature as US
95 degrees, decreasing at 4 degrees per day
40 degrees, increasing at a rate of 5 degrees per day
let the number of days be x
In x days, temperature of Australia will be 95-4x
In x days, temperature of US will be 40 + 5x
For the temperature to be same;
40 + 5x = 95 - 4x
95-40 = 5x + 4x
9x = 55
x = 55/9
x = 6.111 which is approximately 6
For 6 days, the temperature in Australia will be warmer , on the 7th day, the US temperature becomes warmer
The ratio of boys to girls in Ms. Alper’s math classes is 5 ∶ 7. If there are 60 boys in all of her classes, how many girls are there ?
Plz help im so dumb ;-;
Answers
Answer:
I think it's 80 I'm sorry if I'm wrong
Answer:
the person above is incorrect I think it may or may not be 75
20 points and brainliest.
Answers
Answer:
c.
Step-by-step explanation:
f(x)=3x+5
y=3x+5
x=3y+5
x-5=3y
y=(x-5)/3
y=1/3x-5/3
HELP ASAP I ONLY HAVE 6 MINUTES LEFT!!
I'll give brainliest to the answer I like best!!
find the radius diameter circumference and area of the circular object (one of these measurements is given in the problem). Round all answers to the nearest whole number.
The tires on a mining truck are 14 ft tall.
Radius: _____ft
Diameter: _____ft
circumference: _____ft
area: _____ft
Answers
Step-by-step explanation:
diameter=14ft
radius=7ft
circumference=2πr
=2×3.142×7
=43.988ft
=44ft(to the nearest whole number)
Area= πr2
=3.142×7×7
=153.958ft
=154ft(nearest whole number)
Evaluate each value expression for the given value of x: 22-x/5 , x=20
Answers
Answer:
18
Step-by-step explanation:
or
for taking sq root:
x=√10 or x=−√10
A possible reason for inaccurate measurement
Answers
Answer:
Random Errors. Random errors are ones that are easier to deal with because they cause the measurements to fluctuate around the true value. ...
Systematic Errors. ...
What Causes Measurement Errors? ...
Instrument Errors. ...
Calibration. ...
Instruments Getting Old. ...
Operator Errors. ...
Measurement Location Errors.
Step-by-step explanation:
The student council made a pront of $3,000 on a car wash. If they invest the money at 5% interest
compounded yearly, how much money would they have in four years?
Answers
Answer:
$3375 money would the student council have in four years if they invest $3000 at 5% interest compounded yearly.
Step-by-step explanation:
We are given:
Principal Amount = $3000
Interest Rate r = 5% or 0.05
n=1 (compounded yearly)
Years t= 4
We need to find future value (A)
The formula used is: [tex]A=P(1+\frac{r}{n})^{nt}[/tex]
Putting values in formula and finding future value A
[tex]A=P(1+\frac{r}{n})^{nt}\\A=3000(1+\frac{0.05}{1})^{1*4}\\A=3000(1+0.05)^4\\A=3000(1.05)^4\\A=3000(1.215)\\A=3375[/tex]
So, $3375 money would the student council have in four years if they invest $3000 at 5% interest compounded yearly.
i need help asap......
Answers
A state university is interested in where its students come from. They survey 300 of its students to find out if they are in-state, out-of-state, or foreign students. Match the vocabulary word with its corresponding example.
All students at the university
The proportion of the 300 surveyed students who are in-state students
The list of the 300 answers to the survey question
The answer in-state out-of-state or foreign
The 300 students who were surveyed
The proportion of all students from this university who are in-state students
population
Statistic
Data
Variable
Sample
Parameter
Answers
Answer:
The correct matches are;
All students at the university → Population
The proportion of the 300 surveyed students who are in-state students → Statistic
The list of the 300 answers to the survey question → Data
The answer in-state out-of-state or foreign → Parameters
The 300 students who were surveyed → Sample
The proportion of all students from this university who are in-state → Variable
Step-by-step explanation:
1) The population is the set that contains total number of possible observation in the question, the population is all the students of the university
2) A statistic is a calculated quantity derived from a sample's data value that can be used in estimating a parameter of the population or outlining a sample characteristic
The proportion of the in-state student in the sample is found by taking the ratio of the number of in-state student in the sample to the total number of student in the sample
3) Data are collected information which may be qualitative or quantitative variables
The answers collected in the survey are the data of the 300 surveyed student
4) A parameter is the value that is used as the means of measuring or classifying an item or system
5) A sample is a part or portion of a population, that serves as representative of the population
6) A variable is a quantity that can vary or cannot be said to be constant.
The number proportion of all students from the university who are in-state students can change due to change in the proportion during graduation and admission.
The vocabulary word when correctly matched to the corresponding example would give:
All students at the universityPopulation
The proportion of the 300 surveyed students who are in-state studentsParameters
The list of the 300 answers to the survey questionData
The answer in-state out-of-state or foreignVariable
The 300 students who were surveyedSample
The proportion of all students from this university who are in-state students populationStatistic
Read more about statistics here:
https://brainly.com/question/12150562
What is the product of d – 9 and 2d2 + 11d – 4?
Answers
Answer:
yes
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Determine which of the values is a solution of 14>22−2z. My options are 2, 5, 7, 3, -4, 0
Answers
Answer:
I think -4
Step-by-step explanation:
You want to buy a new TV the has a regular price of $450. It is on sale for 20% off.
What is the amount of discount?
$95.40
What is the sale price?
Answers
Answer:
you just have to be poggers and the answer will come to you
Step-by-step explanation:
Please Help! Will give 15 points!!!
4. Find the sum of (0.75x - 12y) and (-5 + 6y - 0.5x)
Show each step of your work.
5. Which expression(s) is/are equivalent to 8-2(5x-3). Show your work to justify your decision.
a. 6(5x-3)
b. 8-10x+6
c. 8-(10x-6)
d. 8-10x-6
e. -10x+14
6. In math class, students are attempting to simplify the expression written on the board: 7 - 2 (3 - 8x)
Three students make an attempt at a first step:
Len writes: 5 (3 - 8x)
Monty writes: 7 - 2 (-5x)
Nailany writes: 7 - 6 - 16x
Do you agree with any of the students? Explain your reasoning for each one.
Answers
Answer:
yo i only got number 4 for you but here it goes.......: 0.70x+18y-5
Step-by-step explanation:
(0.75x - 12y) + (-5 + 6y - 0.5x)
regroup to the variables : (0.70x-0.5x) + (12y+ 6y-5)
put it together: (0.70x)+(18y-5)
you cant add unlike terms so you remove the parenthesies and your done.
Can you explain LCM and GCD please?
(Least Common Multiple and Greatest Common Divisor)
Answers
Answer:
I got you lol
Step-by-step explanation:
Let's say you want to calculate the GCD and LCM of two numbers: 12 and 28. First, determine the prime factorizations of 12 = 2 × 2 × 3 and 28 = 2 × 2 × 7. The GCD is the string that is present in both sets of factorizations, i.e., 2 × 2 = 4. The LCM is the greatest power of all exponents; 2 × 2 × 3 × 7 = 84.
simply put, The Least Common Multiple (LCM) of two integers a and b, usually denoted by LCM (a, b), is the smallest positive integer that is divisible by both a and b.
GCD is the largest number that divides 2 numbers equally and gives remainder 0.
A stick is 20cm long.A student makes a 5% error in measuring the stick. find two possible values for the student's measurement
Answers
The two possible measurements given by the student are :
19 cm or 21 cmGiven the Parameters :
Length of stick = 20 centimeters Percentage Error in measurement = 5%The length of the error in measurement can be calculated thus :
Percentage error in measurement × length of stick 20 cm × 5% = 1 cmTherefore the student's measurement can be expressed as :
Actual measurement ± actual length 20 - 1 or 20 + 1 19 or 20Therefore, the possible measurements of the student are 19 or 21 cm
Learn more : https://brainly.com/question/18796573
the graph below shows a proportional relationship between x and y. what is the constant of proportionaliy y/x
Answers
Answer:
it is 4 i just did it
Step-by-step explanation:
Answer:
Four
Step-by-step explanation:
4
y’all what is 1/7=1/7x-3
Answers
Answer:
x=22
Step-by-step explanation:
The equation that represents the linear relationship is y =
Will give brainlist
Answers
Answer: Y=150
Step-by-step explanation: SIMPLE MATH
I don’t understand
2(2a-7b) do we put it as 4a-18b or 4a-18
Answers
Answer:
2(2a-7b) = 4a-14b
Step-by-step explanation:
You have to multiply both the numbers inside brackets (2a,7b) with 2 .....
Natalie wants to start a business, she is going to make bracelets. She spends $40 for a braiding device and materials to start her business. Each times she makes a bracelet it costs her $8 in materials and packaging. Natalie sells her bracelets for $8 each.
Answers
y=9+9 because when you take that factor off you add 8 + 1
TPPC 22345 is a non-real time plan. What does non-real time mean?
Answers
bologna is hot dog pancakes! ;)
Answers
Answer:
cool
Step-by-step explanation:
I have no idea what this means but good on u:)
Answer: haha is it weird that i want bologna now lol
Step-by-step explanation: have a nice night :)
The height, h in feet, of a rocket is given by h=-16t^2+64t+190, where t is time in seconds. Find the maximum height of the rocket and find the time the rocket was in the air.
Answers
Step-by-step explanation:
The height, h in feet, of a rocket is given by, where t is time in seconds.
[tex]h=-16t^2+64t+190[/tex] ...(1)
We need to find the maximum height of the rocket and find the time the rocket was in the air. For maximum height, put [tex]\dfrac{dh}{dt}=0[/tex]
[tex]\dfrac{d(-16t^2+64t+190)}{dt}=0\\\\-32t+64=0\\\\t=\dfrac{64}{32}\\\\t=2\ s[/tex]
So, it will reach its maximum height in 2 seconds.
Now put t = 2 in equation (1) as follows :
[tex]h(2)=-16(2)^2+64(2)+190\\\\=254\ \text{feet}[/tex]
So, the maximum height of the rocket and find the time the rocket was in the air is 254 feet and 2 seconds respectively.
Sandra can run 5 miles per hour. Write an equation to show the relationship between the amount of hours, h, and the total distance, d. Explain how you got your answer.
Answers
Answer:
d=5h because the number of hours run multiplied by 5 would equal the
total distance.
PLEASE HELPPPPP MEEE♥️♥️♥️♥️
Answers
Answer:
[tex](.2246 \\ 5513[/tex]
A cell phone tower casts a shadow 150 feet long. A tree nearby that is 30 feet tall casts a shadow that is 20 feet long. How tall is the cell phone tower
Answers
Answer:
[tex]90,000^{3}[/tex] (90,000 cubed)
Step-by-step explanation:
150 x 30 x 20
Help find domain and range
Answers
Answer:
Another way to identify the domain and range of functions is by using graphs.
Step-by-step explanation:
Because the domain refers to the set of possible input values, the domain of a graph consists of all the input values shown on the x-axis. The range is the set of possible output values, which are shown on the y-axis.
Answer:
Answer is 13
Step-by-step explanation:
Putting 3 in x
5.3-2
15-2
what is (10 - 3 x 2) to the power of 2?
Please help!
Answers
Answer:
The answer is 16
Step-by-step explanation:
Multiply -3 by 2
(10-6)^2 ^2=power
subtract 6 from 10
4^2
Raise 4 to the power of 2
16
.
Answer:
16
Step-by-step explanation:
= (10 - 3 x 2) ^ 2
= (10 - 6) ^ 2
= 4 ^ 2
= 16
HOPE THIS HELPS
PLZ MARK BRAINLIEST
WILL MARK BRAINIEST IF RIGHT
(AMC8, 2008) In square ABCE, A F = 2FE and CD = 2DE. What is the ratio of the area △BDF to the area of square ABCE?
A. 1/6 B. 2/9 C. 5/18 D. 1/3 E. 7/20
Answers
Answer:
The answer is A
Answer:
C
Step-by-step explanation:
Select the correct answer
Which statement is true about the slope of the graphed line?
A the slope is negative B the slope is positive. C the slope is negative D the slope is undefined
Answers
Answer:
the slope is positive B
Answer: The answer is B hope that helps you!!
Step-by-step explanation: