Answer:
Independent Variable: Jazz music
Dependent Variable: Sleeping Time
Experimental Group: people sleeping with jazz music
Control Group: people sleeping without jazz music
3 constants:
No of people in group
Jazz music
Sleep
Step-by-step explanation:
The independent variable is the one which is not altered by any outer influence. For example the jazz music will not be interrupted by the sleeping habits of people.
The dependent variable is the one which is affected by external changes such as sleeping time is afffected by external music or noises.
Experimental group on which experiment is being carried out.
Control group is which determines the changes in experimental group.
Constants which do not change for the number of experiment, could be number of people, type of jazz music, volume of jazz music also sleep is a constant .
Katie has a coin collection she keeps 7 of the coing in the box which is only 14% of her entire collection. What is the total number of coins in katie's collection
Answer:
x= 50
Step-by-step explanation:
7/x = 14/100
14x = 700
x = 50
the reason behind my calculations were to get the same ratios and because they gave us percentage and the actual number, we can set them; 14 percent 14/100, however, the 7/x is because we don't know the 100 percent of the coins which is what we look for. Therefore, you cross multiply and get x.
I hope this helped
Help tell me which one is supposed to go with which. Answer as quick as possible
Answer:
(-7,5)
Step-by-step explanation:
Have a Great Dayy
PLEASE HELP ME IT WOULD BE AMAZING IF YOU CANNN
Write the ratio of the first measurement to the second measurement. Compare in inches.
4 feet to 35 inches
Answer:
Step-by-step explanation:
12 inches = 1 foot
12*4= 48 inches
48:35
what does 5c+cd5c+cd5, c, plus, c, d when c=\dfrac15c=
5
1
c, equals, start fraction, 1, divided by, 5, end fraction and d=15d=15d, equals, 15 mean
Answer: 67
Step-by-step explanation:
A circular park of radius 30m has a track of width 2.5m on its
inner side. Find the area of the track.
Answer:
490.625 m^2 is the area of the track.
i'll mark you as brainliest
Answer:
y = x - 2
Step-by-step explanation:
.
Can anyone explain me step two (in red)?
Thanks in advance.
Answer:
umm
Step-by-step explanation:
Based on the data in the table, how many members would
you expect in the band in 2019?
Year
Number of Band
Members
2014
40
2015
46
2016
54
2017
64
Answer:
90
Step-by-step explanation:
It starts going up by 6. Then it goes up by 2 more than six. 6, 8, 10. Going up 2 more than last time. 2018 would be 12 more, or 76, and 2019 would be 14 more, or 90.
Write the equation in slope-intercept form of the line that
contains the points:
(3,4) & (5,8)
**Zander is making individual desserts for a dinner party. He has
3/4 of a cup of whipped cream, and he wants to
put 1/8 of a cup of whipped cream on each dessert. How many desserts can he make?
Answer:
7/8 desserts he can make.
Step-by-step explanation:
Angle a and b are complementary. M angle a equal (5x +2) degrees. Find m angle b. Justify your reasoning. Will mark brainliest !!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
∠b = 88 - 5x
Step-by-step explanation:
If a and b are complementary, then sum of two angles is 90
∠a + ∠b = 90
5x + 2 + ∠b = 90
∠b = 90 - 5x - 2
∠b = 88 - 5x
In 1895, a brick arch railway bridge was built on North Avenue in Baltimore, Maryland. The arch is described by the equation h = 9 −1/50x², where h is the height in yards and x is the distance in yards from the center of the bridge.
a. Graph this equation on your calculator and describe, to the nearest yard, where the
bridge touches the ground.
Answer:
21.213
or
(21.213,0)
Step-by-step explanation:
y-intercept = 9
slope= -1/50x^2
I graphed it and it was a parabola and it hit the ground at this coordinate (21.213,0)
what is the value of x that satisfies the following equation
1 over 3 ( x - 9) = 2 over 3 (2x + 6)
Answer:
x=-7
Step-by-step explanation:
BRAINLIEST PLS
Hi if someone can answer the top one I’ll mark u brainliest thanks
Answer:
the answer is a
Step-by-step explanation:
i got corrected :)
Answer:
A.) 8 1/4 !!
Step-by-step explanation:
2.75 x 3 = 8.25
8 1/4
HURRRYYYY!!
Amir has a bag of dimes and quarters. He has a total of 31 coins worth $5.20.
Let x represent the number of dimes and y represent the number of quarters.
Which system of equations would be used to find out how many dimes and quarters Amir has?
Answer:
B is the correct answer.
Step-by-step explanation:
This is the given information for which system of equations would be used to find out how many dimes and quarters Amir has?
x = dimes x = 0.10 or 0.1
y = quarters y = 0.25
31 coins
worth $5.20 = 5.2
x + y = 31
0.1x + 0.25y = 5.2
y=7-x in standard form please help
Answer:
x + y = 7
Step-by-step explanation:
Mt.Everest is 8,707,37 feet higher than Mt.Mckinley. What is the elevation of Mt.Everest.
Answer:
I think this is right if not SO SORRY
Step-by-step explanation:
29,029′
Answer:
29,032′ there's my answer its right
Step-by-step explanation:
ill give a brainliest if you can answer all three :))
Answer:
4. A
8. D
9. B
Step-by-step explanation:
4. started with 10 points: +10
lost 20 points: -20
won 45 points: +45
10-20+45
8. 11-(-8)
=19
9. 100-(-50)-2
=150-2
=148
PLS GIVE BRAINLIEST
Answer:
4 is A ; 8 is D ; 9 is B
Step-by-step explanation:
PLS GIMME BRAINLIEST
WILL MARK BRAINLIEST
Answer:
Width: (13 inches side) 169 ft
Length: (11 inches side) 143 ft
Step-by-step explanation:
I'm not 100% sure but I tried :)
A chef is making pickles. He needs 15 gallons of vinegar. The store sells 2 gallons of vinegar for $3.00 and allows customers to buy any amount of vinegar. Decide whether each of the following ratios correctly represents the price of vinegar.
Choose yes or no
4 gallons to $3.00
[ Choose yes or no
1 gallon to $1.50
[ Choose yes or no
30 gallons to $45.00
[ Choose yes or no
$2.00 to 30 gallons
[ Choose yes or no
$1.00 to 2/3 gallon
THE QUESTION WILL MAKE YOU BRAINLIEST!
Answer:
the first one- no the second- yes the third- yes the fourth- no the fifth- yes
Step-by-step explanation:
i passed grade 7 lol
The price of gallons as per number of gallons.
1 gallon to $1.50
30 gallons to $45.00
$1.00 to 2/3 gallon
Finding cost of gallons
Accoring to the question, the price of two gallons of vinegar is $3.00. A chef need fifteen gallons of vinegar to make pickles.
As we know the price of two gallons of vinegar, we can find out price for any amount of vinegar by applying cross multiplication method.
Let's find out price of different amounts of gallons
The cost of two gallons of vinegar = $3.00
So, the cost of one gallon of vinegar = $3.00/2 = $1.50.
we find out that cost of one gallon of vinegar is $1.50.
Let's find the cost of other amount of gallons.
The cost of four gallons = ?
we know the cost of one gallon is $1.50, so the cost of four gallons is $1.50 × 4 = $6.00
This is how we can find out cost of other amount of gallons by multiplying number of gallons by the price of one gallon.
To know more about ratios click the link below.
https://brainly.com/question/2914376
#SPJ2
PQ:QR is 5:2 and PR=42 find PQ and QR
Answer:
there is a math caulator
Step-by-step explanation:
PEASE HELP REALLY QUICK
Answer:
x = 1
Step-by-step explanation:
13x - 12 = 7x -6
6x = 6
x = 1
What steps are used to solve this equation?
6f = 48
Complete each statement.
First, _____
on both sides of the equation.
Next, simplify the equation to determine that the solution of the equation is
.
Check the solution by substituting
for f and simplifying.
Answer:
What steps are used to solve this equation?
6f = 48
Complete each statement.
First,
✔ divide by 6
on both sides of the equation.
Next, simplify the equation to determine that the solution of the equation is
✔ f = 8
.
Check the solution by substituting
✔ 8
for f and simplifying.
Step-by-step explanation:
The solution of the given equation would be 8.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
A mathematical equation is a statement with two equal sides and an equal sign in between.
A system of equations is two or more equations that can be solved to get a unique solution and the power of the equation must be in one degree.
We are given the equation as;
6f = 48
We have to Complete each statement.
First, divide by 6 into both sides of the equation.
f = 48/6
Next, simplify the equation to determine that the solution of the equation is
f = 8
Check the solution by substituting for f and simplifying.
6 x8 = 48
Learn more about equations here;
https://brainly.com/question/25180086
#SPJ6
Select two ratios that are equivalent to 7: 10.
Choose 2 answers:
21:30
17:20
10:13
26 : 40
35:50
Answer:
21:30 and 35:50
Step-by-step explanation:
To get 21:30, multiply 7:10 by 3.
[tex]7*3=21[/tex] and [tex]10*3=30[/tex].
To get 35:50, multiply 7:10 by 5. Same process as above!
Answer:
21:30 and 35:50
Step-by-step explanation:
your welcome
Which equation represents a line which is parallel to the line 5x-4y=-12?
Answer:
Attached image
the local grocery store is running a special three dozen of eggs $1.08 what is the cost per egg
Answer:
more than 25 cents
Step-by-step explanation:
A 2-column table with 4 rows. Column 1 is labeled Bag Size with entries 2 pound, 6 pound, 8 pound, 12 pound. Column 2 is labeled Price with entries 4 dollars and 50 cents, 12 dollars and 30 cents, 16 dollars and 80 cents, 25 dollars and 20 cents.
Darryl needs 84 pounds of coffee for his deli. Use the prices for the different-size bags shown in the table to identify which size bag he should buy, the number of bags he will need, and the total price for that number of bags.
Which size bag should Darryl buy?
How many of those bags will he need?
What will be the total cost of the coffee?
-The first one is
6 pounds
-The second one is
14
-The third one is
$172.20
i just took it on ~e d g e n u i t y~
Answer:
-The first one is
6 pounds
-The second one is
14
-The third one is
$172.20
i just took it on ~e d g e n u i t y~
Step-by-step explanation:
10. A certain strain of bacteria occurs in all raw milk. Tests of uncontaminated raw milk conducted by the Health Department found that the bacteria count per milliliter is normally distributed with a mean of 3500 and standard deviation of 300. a) What is the probability of finding a bacteria count of between 3200 and 3400 in a milliliter of raw milk? b) What percentage of the uncontaminated raw milk has a bacteria count per milliliter between 3200 and 3400? c) For this normal distribution, what is the percentage of the area under the normal curve for a bacteria count per milliliter less than zero? As bacteria count cannot be less than 0, is this small enough to disregard when claiming that the bacteria count per milliliter is normally distributed? Explain your answer.
Answer:
a) 0.21078
b) 21.078%
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.
Mean of 3500 and standard deviation of 300.
a) What is the probability of finding a bacteria count of between 3200 and 3400 in a milliliter of raw milk?
For x = 3200
z = 3200 - 3500/300
z = -1
Probability value from Z-Table:
P(x = 3200) = 0.15866
For x = 3400
z = 3400 - 3500/300
z = -0.33333
Probability value from Z-Table:
P(x = 3400) = 0.36944
The probability of finding a bacteria count of between 3200 and 3400 in a milliliter of raw milk
P(x = 3400) - P(x = 3200)
= 0.36944 - 0.15866
= 0.21078
b) What percentage of the uncontaminated raw milk has a bacteria count per milliliter between 3200 and 3400?
We convert the answer in part a) to percentage
= 0.21078 × 100
= 21.078%
please help me with my homework my friends won’t
Answer:
Part A
1. Celsius
2. 100 C
3. 273.15 Kelvin.
4. 273, formula: °C + 273.15 = K.
5. -273 celsius
6. Farenheit
Part B:
7. True
8. False, you add not subtract.
9. False, it's 373.1 K
10. True