Answer:
Null hypothesis; H0: μ1 = μ2
Alternative hypothesis; Ha: μ1 > μ2
Step-by-step explanation:
We are told that the telraffic was experiencing an average of 20 accidents per week.
Thus, μ = 20
We are told that the council decided to try to reduce the number of accidents.
Thus defining the hypothesis, we have;
Null hypothesis; H0: μ1 = μ2
Alternative hypothesis; Ha: μ1 > μ2
PLEASE HELP! WILL MARK BRAINLIEST IF RIGHT! 3 QUESTIONS!
1. Tia cut a 4-meter 8-centimeter wire into 10 equal pieces. Marta cut a 540-centimeter wire into 9 equal pieces. How much longer is one of Marta’s wires than one of Tia’s?
2. Jay needs 19 quarts more paint for the outside of his barn than for the inside. If he uses 107 quarts in all, how many gallons of paint will be used to paint the inside of the barn?
3. String A is 35 centimeters long. String B is 5 times as long as String A. Both are necessary to create a decorative bottle. Find the total length of string needed for 17 identical decorative bottles. Express your answer in meters.
Answer:
Tia cut a 4-meter 8-centimeter wire into 10 equal pieces. for Jay 10 quarts would be the answer. Step-by-step explanation: He needs x quarts for the inside painting and x + 19 quarts for the outside. These two measures add up to 2x + 19, which equals 107 (quarts) total. The last one is tring A is 35 cm long, string B is 5 times as long as string A, then string B is 35·5=175 cm long. In total both strings have length 35+175=210 cm. The total length of string needed for 17 identical decirative bottes is cm that is 35.7 m.
is it better to buy 3 gifts and get one free or use a coupon for 20% off of three. which is cheaper i’m too lazy to do it :~|
Answer:
Coupon
Step-by-step explanation:
C O U P O N
Answer:
coupon
Step-by-step explanation:
Would someone mind helping me? I really need this answer but I'm so confused. I would appreciate any help :) and if you get the answer right, ill give you brainliest.
Answer:
The answer is A.
Step-by-step explanation:
The equation y=mx+b is shown where m is slope and m=-2 and b is the y-intercept, which b=1 (0,1) is the y intercept.
Solve -2(2x + 5) - 3 = -3(x - 1) (1 point)
Answer:
x=-16
Step-by-step explanation:
hope this helps!
Write
7
as a decimal.
25
0
Answer:
0.07
Step-by-step explanation:
Anna got 45 answers correctly out of an unknown number of questions
which was 90% correct. How many questions were there?*
5 or
55 or
60
Answer:
The answer for this problem would be 50.
Step-by-step explanation:
If you calculate 90% of 50, you should get 45 so, the answer is 50.
What is the equation of the line that passes through the point (-6,-5) and has a slope of 2/3
Answer:
the answer is y=2/3x-5
Which point of view is used in The Call of the Wild?
first person
second person
third-person limited
third-person omniscient
Answer:
I am still trying to pick between third-person limited and third-person omniscient...Let me know which one is right :)
Step-by-step explanation:
Answer:
The answer is third-person omniscient I did it on edge
Step-by-step explanation:
so itz 100% correct trust me
Help me I need to be done pls
Answer:
im not 100% sure but i think 1.5
Step-by-step explanation:
sry if not
Answer:
-3
___
2
Step-by-step explanation:
9-(4-1)^2
______
8-2^2
9-(16-1)
______
8-4
9-15
_____
4
-6
___
4
=-3
------
2
Alicia received the following seven scores on her math assignments.
80, 90, 10, 75, 90, 95, 99
Find the mean and median. Which measure of center best represents the data?
Answers:
Mean = 77Median = 90The median is the better measure of center=============================================
Explanation:
Part (1) Finding the mean
Add up the values to get
80 + 90 + 10 + 75 + 90 + 95 + 99 = 539
Then divide by 7 because there are 7 values in this list
539/7 = 77
The mean is 77
--------------------------
Part (2) Finding the median
First we'll need to sort the values from smallest to largest
{80, 90, 10, 75, 90, 95, 99}
will sort to
{10, 75, 80, 90, 90, 95, 99}
The middle most value is 90 since we have three items below it {10,75,80} and three items above it {90, 95, 99}.
The median is 90
--------------------------
Part (3) Which is the better measure of center?
Nearly all of the values are clustered from 75 to 99. The value 10 is an outlier since it's far from the main cluster. There are more technical processes used to find out if 10 is actually an outlier or not, but we won't deal with that right now.
The much smaller outlier pulls on the mean to make it smaller than what it should be. The mean 77 is too small to represent what the center should be. The median is not affected by outliers, which is why it's used in applications such as home prices.
The median 90 is the better measure of center.
Answer:
I tried c and i got it wrong
Step-by-step explanation:
its not c
Irina has 3 hours to finish her final math exam. Keeping in mind that there are 60 minutes in 1 hour, how much time, on average, does she have for each question if there are 45 questions on the exam? 1.5 minutes 2.ModifyingAbove 6 with bar minutes 4 minutes 15 minutes
Answer:
4 minutes per question
Step-by-step explanation:
3 hours = 180 mins
180/45 = 4
4 minutes per question
Answer:
an average of 4 minutes on each
Step-by-step explanation:
Haleigh split 4/9 of a gallon of juice into 8 cups. How much juice was in each cup?
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▹ Answer
1/18 of a gallon of juice in each cup.
▹ Step-by-Step Explanation
Since we have 4/9 of a gallon of juice for 8 cups, we will divide to find the amount of juice in each cup.
[tex]\frac{4}{9} / 8[/tex]
Since this operation is division, we have to change 8 to it's reciprocal which is 1/8:
[tex]\frac{4}{9}/ \frac{1}{8} = \frac{4}{72} = \frac{1}{18}[/tex]
Our final answer will be 1/18 of a gallon of juice in each cup.
Hope this helps!
CloutAnswers ❁
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9.2*10^-3 in standard form
Answer:
9.200 × [tex]10^{-3}[/tex]
I hope this helps!
write the equation in point slope form for a line that passes through the points (-2,3) and (6,-1)
Answer:
y - 3 = -1/2(x + 2)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Point-Slope Form: y - y₁ = m(x - x₁)
x₁ - x coordinate y₁ - y coordinate m - slopeStep-by-step explanation:
Step 1: Define
Point (-2, 3)
Point (6, -1)
Step 2: Find slope m
Substitute: [tex]m=\frac{-1-3}{6+2}[/tex]Subtract/Add: [tex]m=\frac{-4}{8}[/tex]Simplify: [tex]m=\frac{-1}{2}[/tex]Step 3: Write linear equation
Point-Slope Form: y - 3 = -1/2(x + 2)
Answer:
y = -(1/2)x+2
Step-by-step explanation:
its the day befofe valentines day and shelly needs to get valentine cards for all of her classmates the desks are arranged in a rectangle 7 rows wide and 5 rows long if there are 3 desks that are empty how many students are in the class
Answer:
21
Step-by-step explanation:
(7x2)+(5x2)-3=21
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┃┈┃┈╰━╰━━━━━━╮
╰┳╯┈┈┈┈┈┈┈┈┈◢▉◣
╲┃┈┈┈┈┈┈┈┈┈┈▉▉▉
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Answer:
32 students
Step-by-step explanation:
7 times 5= 35
35-3=32 students
Slope pls help ASAP due tonight
Answer:
y=x+ -5
i think
The slope would be 1, which is basically just x but yeah, the other blank would be -5 since it's the y-intercept (where the line touches the y-xis) I hope this helps!!!
what conjecture can you make about the sum of firs 52 positive even numbers
Answer:
See Explanation
Step-by-step explanation:
The question is incomplete. However, the available details is enough to work out a solution.
Considering the first even number: 2
In this case, n = 1
The sum of the first even term is 2.
Represent the sum as a product:
[tex]2 = 1 * 2[/tex]
Considering the first two even numbers: 2 and 4
In this case, n = 2
The sum of the first two even terms is 6
Represent the sum as a product:
[tex]6 = 2 * 3[/tex]
Considering the first three even numbers: 2, 4 and 6
In this case, n = 3
The sum of the first two even terms is 12
Represent the sum as a product:
[tex]12 = 3 * 4[/tex]
Notice the pattern from n = 1 to 3
[tex]2 = 1 * 2[/tex] --- n = 1
[tex]6 = 2 * 3[/tex] --- n = 2
[tex]12 = 3 * 4[/tex] --- n = 3
------------------------------------
It follows that, the sum when represented as a product is: [tex]n * (n + 1)[/tex]
So, the sum of the first 52 even terms would be:
[tex]52 * (52 + 1)[/tex]
Where n = 52
[tex]52 * (52 + 1) = 52 * 53[/tex]
[tex]52 * (52 + 1) = 2756[/tex]
Hence, the sum of the first 52 even terms is 52 * 53 or 2756
how do you get a 15 year old girl to like you when you're 13 and how to tell 8f they'll like you
Answer:
you dont
Step-by-step explanation:
Answer:
sing to her and say- "but age aint nothing but a number" and you'll start dating real quick
please help me guys find the slope
Answer:
[tex]m=4[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Pick any 2 points from the chart.
Point (-5, -7)
Point (-4, -4)
Step 2: Find slope m
Substitute: [tex]m=\frac{-4+7}{-4+5}[/tex]Add: [tex]m=\frac{4}{1}[/tex]Divide: [tex]m=4[/tex]136/50
as a percentage?
Answer: 272%
Step-by-step explanation: To write 136/50 as a percent have to remember that 1 equal 100% and that what you need to do is just to multiply the number by 100 and add at the end symbol % .
136/50 * 100 = 2.72 * 100 = 272%
And finally we have:
136/50 as a percent equals 272%
estimate 2,072-581 by first rounding each number to the nearest hundred
Answer:
1490 is the correct answer
Step-by-step explanation:
2070- 580= 1490
An investment earn 6% simple interest. What amount of principal is need to have $3000 after 5 years
Answer:
The amount of $1000 principal is needed to have $3000 after 5 years.
Step-by-step explanation:
As the interest formula is
[tex]I=Prt[/tex]
Where
P is the principler is the rate in decimalt is the time in yearsSubstituting the following values in the interest formula and solve for P
I=$3000
r = 6% = 6/100 = [tex]0.06[/tex]
t = 5
so the equation becomes
[tex]I=Prt[/tex]
[tex]3000=P\left(0.06\right)\left(5\right)[/tex]
switch both sides
[tex]P\left(0.06\right)\left(5\right)=3000[/tex]
[tex]P\left(0.3\right)=3000[/tex]
[tex]P=10000[/tex] $
Therefore, the amount of $1000 principal is needed to have $3000 after 5 years.
Pls answer fast i will mark u brainliest
Answer:
-16 3/28
Step-by-step explanation:
sowwy if wrong owo
1. multiply
-2 3/4 * 5 6/7 = -11/4 * 41/7 = -451/28
2. simplify
-451/28 = -16 3/28
madison and jacob are training for a 5k. Below shows a week of their running log complete the tables
Answer:
asxas
Step-by-step explanation:
Is the number 2 composite or prime
Answer:
prime Number
Step-by-step explanation:
because 2 can be only divided by itself and one
Answer:
the number 2 is the only even prime number
the marijority of the population in the United states _________.
A. French
B.spanish
C.English
D.native languages
A runner runs 400m west then changes direction and runs 600m south, If the entire trip takes 35s, what is the average speed? Give your answer in to two decimal places.
Average Speed = Total Distance / Total Time
Total Distance = 400m + 600m = 1,000m
Total Time = 35s
Average Speed = 1,000/35 = 28.57 m/s (approx.)
Answer:Average Speed in two decimal places is 28.57 m/s (approx.)
Which expression shows the amount of tax on a T-shirt that costs x dollars, if tax is 7%?
A
0.07x
B
0.07
C
7x
D
7
Answer: A or B
Step-by-step explanation:
David is having a cookout. Hot dogs and buns are sold based on the following quantities per package.
Item
Amount Per Package
Hot dog buns
12
Hot dogs
10
A
David thought that he would have to buy 12 packages of hot dog buns and 10 packages of hot dogs to have one bun for each hot dog.
What is the LEAST amount of each David would need to buy to have an equal number of hot dogs and buns?
David should buy 2 packages of buns and 2 packages of hot dogs,
David should buy 6 packages of buns and 5 packages of hot dogs.
с David should buy 5 packages of buns and 6 packages of hot dogs,
D David should buy 22 packages of buns and 22 packages of hot dogs
B
Answer: Choice C) David should buy 5 packages of buns and 6 packages of hot dogs.
========================================================
Explanation:
Focus on the hot dog buns for now
1 package = 12 hot dog buns
2 packages = 24 hot dog buns (multiply both sides by 2)
3 packages = 36 hot dog buns (multiply original equation by 3)
We can see that the multiples of 12 are being listed. So we have
12, 24, 36, 48, 60, 72, 84, ...
as the possible number of hot dog buns we could get if we buy 1,2,3... packages.
The possible number of hot dogs we can get are
10, 20, 30, 40, 50, 60, 70, 80, ...
which are multiples of 10. Simply add 10 to each item to get the next one.
--------------------------------
Considering these two sets
12, 24, 36, 48, 60, 72, 84, ...
10, 20, 30, 40, 50, 60, 70, 80, ...
what is the lowest common multiple? That would be 60 since it is found in both lists and it is the smallest in common.
The LCM of 12 and 10 is 60.
If he wanted 60 hot dog buns, then 60/12 = 5 packages of buns is what he needs.
If he wanted 60 hot dogs, then he needs 60/10 = 6 packages of hot dogs.
Therefore, David should buy 5 packages of buns and 6 packages of hot dogs. The answer is choice C.
--------------------------------
Side note: a different way to find the LCM is to multiply 10 and 12 to get 10*12 = 120. Then we divide by the GCF 2 getting 120/2 = 60.
A theatre shows four movies, with a break after each one. Movie 1 starts at 11:00 am. When does Movie 3 start? *
Answer:
Movie 3 starts at 4:15 pm
Step-by-step explanation:
11:00 am + 2 hours 30 minutes + 2 hours 30 minutes + 15 minutes
11: 00 am + 5 hours + 15 minutes = 4:00 pm + 15 minutes
Movie 3 starts at 4:15 pm