If the sample size gets larger, the size of the correlation that is needed for significance will get smaller.
What will happen to the significance required when sample size increases?As the sample size gets larger, it's characteristics will become more and more like the population it is derived from which makes predictions more accurate.
As a result, the correlation size that is needed to decide significance will reduce. This tallies with the characteristic of the correletion coefficient to be lower when the sample size is greater.
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(30 Points) 1. State the minimum monthly income and hourly wage per worker needed to cover monthly expenses for the family you used in part a (first picture). Then, explain how to calculate the hourly wage based on the monthly income and state the hourly wage. Assume that each full-time worker works four 40-hour work weeks per month, and each part-time worker works two 40-hour weeks per month.
2. ⦁ Keeping all other criteria the same, add a child to the family you used in part a to determine the monthly expenses. How does an additional child impact the family budget and hourly wage (second picture)? Which category was least affected by this change? Explain why you think there was little impact to this category.
The minimum monthly income will be $6165 and the hourly wage to cover the expenses will be $8.5625.
How to calculate the income?From the information given, the minimum monthly income will be $6165 since that's needed to cover the expense.
Also, the hourly income will be:
= 6165/(24 × 30)
= 6165/720
= 8.5625
The hourly income will be $8.5625.
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64x=8
What is the value of x that makes the equation true
Answer:
fraction:
x = [tex]\frac{1}{8}[/tex]
decimal:
x = 0.125
Step-by-step explanation:
64 divided by 8 = 8
[tex]\frac{64}{8}[/tex] = 8
So if youre changing this to multiplication you want to multiply by [tex]\frac{1}{8}[/tex]
[tex]\frac{64}{1}[/tex] * ( [tex]\frac{1}{8}[/tex] )= [tex]\frac{64}{8}[/tex] = [tex]\frac{8}{1}[/tex] = 8
Answer:
fraction:
x = \frac{1}{8}81
decimal:
x = 0.125
Step-by-step explanation:
64 divided by 8 = 8
\frac{64}{8}864 = 8
So if youre changing this to multiplication you want to multiply by \frac{1}{8}81
\frac{64}{1}164 * ( \frac{1}{8}81 )= \frac{64}{8}864 = \frac{8}{1}18 = 8
Two gears are in mesh. The first gear is rotating at 60 rpm and has 23 teeth. The second gear is rotating at 5 rpm. How many teeth does the second gear have
The second gear has approximately 2 teeth.
To find the number of teeth on the second gear, we can use the concept of gear ratios. The gear ratio is the ratio of the number of teeth on the first gear to the number of teeth on the second gear. It is equal to the ratio of their rotational speeds.
Gear Ratio = (Number of Teeth on First Gear) / (Number of Teeth on Second Gear)
Given that the first gear is rotating at 60 rpm and has 23 teeth, and the second gear is rotating at 5 rpm, we can set up the gear ratio equation:
60 rpm (First Gear) / 5 rpm (Second Gear) = 23 teeth (First Gear) / X teeth (Second Gear)
Now, let's solve for X (the number of teeth on the second gear):
X = (23 teeth × 5 rpm) / 60 rpm
X = 115 teeth / 60 rpm
X ≈ 1.92 teeth
Since you cannot have a fraction of a tooth, you would generally round up to the nearest whole number.
Thus, the second gear has approximately 2 teeth. However, it's important to note that it's not practical to have a gear with only 2 teeth, as it wouldn't effectively mesh with the first gear.
In real-world applications, gears typically have a higher number of teeth for smooth and efficient operation. So, in practice, the second gear would likely have a different, more practical number of teeth.
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pls help :) determine which function has a greater rate and explain how you know.
function 1: y = 2 • 0.2x
function 2:
x y
0 1
1 0.8
2 0.64
3 0.512
Using exponential function concepts, it is found that the second function has a greater rate, as 0.8 > 0.2.
What is an exponential function?It is modeled by:
[tex]y = ab^x[/tex]
In which:
a is the initial value, that is, y when x = 0.b is the rate of change, as a decimal.Function 1 is given by:
[tex]y = 2(0.2)^x[/tex]
Hence the rate is b = 0.2.
Considering the values on the table, function 2 is given by:
[tex]y = (0.8)^x[/tex]
Hence the rate is b = 0.8.
Hence, the second function has a greater rate, as 0.8 > 0.2.
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The numbers 1-10 are placed in a bag. What is the probability of the number being between 2-7? PLEASE HELP, I will give BRAINLIEST to anyone that can answer me quickly. Professional or not, I seriously need help. Im giving 37 points.
The probability of picking a number beween 2 and 7 from the numbers placed in the bag is 2/5.
What is the probability?
Probability is a statistial measure used to determine the chances that a given event would happen. If the event would happen with certainity, it would have a value of 1. If it is certain the event would not happen, it would have a value of 0.
The probability of picking a number beween 2 and 7 = numbers between 2 and 7 / total numbers in the bag
4/10 = 2/5
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solve for x
3 = x over 7
Answer:
21
Step-by-step explanation:
3= x/7
3/1=x/7
x=21
I hope this was helpful
Answer:
21
Step-by-step explanation:
3=x/7
x=3×7
x=21
HELP ANSWER QUICK <3
Answer:
7.5 or 7 1/2yards
Step-by-step explanation:
I believe that this is a simple 2.5*3 equation making the answer 7.5, because she has 3 sisters and you can guess that it is a blanket per sister, which makes it 3 blankets and each blanket is 2.5 yards so you multiply the two to see how much material you need.
Answer:
The answer is 7.5
Step-by-step explanation:
Multiply the 2.5 times 3 and you get 7.5
hope this helps <3
Find the median of the following data: 12, 10, 18, 14, 13, 20, 12, 16, 9 [NO LINKS]
The median of this dataset is 13.
Solution:First, list the numbers from least to greatest:9, 10, 12, 12, 13, 14, 16, 18, 20.Now, find the number in the middle:13.Hope it helps.
Do comment if you have any query.
Your friend uses the percent equation to answer the question. What number is 35% of 20?
Is your friend correct?
Answer:
The friend is correct.
Step-by-step explanation:
[tex]\frac{35}{100} =\frac{x}{20}[/tex]
cross multiply:
700 = 100x
700/100 = 100x/100
7 = x
Your friend is correct. The method they used to solve is also a valid way of solving.
hope this helps!
please help i will give brainliest
I personally think that the answer here would be C, all the birds in the forest.
The first 25 birds that were recorded are not the population.
The species with the greatest number is not the population. It is the most thriving species.
The species that are native to the area don't make up the whole population. They make up part of it, not the whole of it.
I hope this makes sense and it helps.
-Toremi
please help me anyone
Answer:
24/40
Step-by-step explanation:
Sine = opposite over hypotenuse
Sine of z = (the side opposite of angle z) / (hypotenuse of the triangle)
Sin z = 24 / 40
Compare using >, <, or=.
3 feet
41 inches
Answer:
<
Step-by-step explanation:
1feet=12 inch
so, 3x12=36 inch
this means 41 inch is greater
How high will the firework be when it explodes? (Look at Photo)
Answer:
606 feet
Step-by-step explanation:
The fireword has a 5-second fuse, meaning that's how long it will take to explode.
Given the polynomial -16t² + 200t + 6, where t is the time in seconds
We need to subsitute 5 sec. (as stated in the question) for t in the polynomial, to find how high the fireworks will be when it explodes :
-16t² + 200t + 6 <== substitute 5 for t
-16(5)² + 200(5) + 6 <== square the exponent first
-16(25) + 1000 + 6 <== multiply
-400 + 1000 + 6 <== add
-400 + 1006 <== add
606 feet <== final answer
This means that it will be 606 feet high before it explodes.
Hope this helps!
1)
a) Construire un triangle ABC isocèle en A tel que AB = 5 cm et BC = 2 cm.
b) Placer le point M de [AB] tel que BM = 2 cm.
c) Tracer la parallèle à [BC] passant par M. Elle coupe [AC] en N.
2) Calculer les longueurs MN et AN en justifiant.
3) Montrer que les périmètres du triangle AMN et du quadrilatère BMNC sont égaux.
Answer:
AM/AB = AN/AC = MN/BC
3/5 = MN/2
MN^5 = 2^3
5MN = 6
MN = 5/6 = 1.2cm
AN/AC = MN/BC
AN/5 = 1.2/2
2'AN = 5',1
2AN = 6
AN = 3cm
P AMN=
AM+MN+AN=
3+1,2+3 = 7,20cm
P BMNC=
BM+MN+NC+CB=
2+1,2+2+2=7,20cm
#:]✓
Which dog pens will take up the same area?
What is the value of x?
Enter your answer in the box.
x =
Answer:
39°
Step-by-step explanation:
To answer this question it's important to remember that all triangles have 3 angles which sum to 180. This means that we can set up an equation to find the missing angle
Create the equation
[tex]39+102+x=180[/tex]Combine like terms
[tex]141+x=180[/tex]Subtract 141 from both sides
[tex]x=39[/tex]This means that the missing angle is 39 degrees. Since two of the angles are equal to 39, this also means that this triangle is isosceles.
Is this relation a function? Justify your answer.
O A. No, because two points with the same yvalue have different x-
values
O B. Yes, because the number of x-values is the same as the number of
y-values.
O C. Yes, because every x and y value is positive.
D. No hecause two noints with the same x-valle have different
Answer:
The answer is A
Step-by-step explanation:
Because its not a function.
Vic's favorite cookie recipe uses 250250250 grams of flour for every 170170170 grams of butter. Imani made cookies using 750750750 grams of flour for every 630630630 grams of butter. What will Vic think of the amount of butter in Imani's cookies
Answer:
Vic would likely say that Imani is using too much butter. Vic is also using too much butter in their recipe, that much butter in any recipe can be lethal.
__________________________________________________________
Questions related to the topic? Ask me in the comments box.
Answer:
Vic has too much butter!!!
Step-by-step explanation:
PLEASE HELP VERY URGENT
Suppose you know the following facts about angle ABC and angle DEF: (1) both triangles have sides of length a and b (2) For angle ABC, a^2 + b^2 = c^2 (3) For angle DEF, angle F is a right triangle. Use the list of expressions below to find the value of c in angle ABC and the length of the hypotenuse of angle DEF.
The value of c in angle ABC is _______ and the length of the hypotenuse of angle DEF is ________.
A. square root of a^2 + b^2
B. a^2 + b^2
C. b^2 - a^2
D. square root of a^2 - b^2
E. a^2 - b^2
F. square root of b^2 - a^2
(if u have trouble reading the text look at the attached photo for the question)
Answer:
√(a² + b²) is the answer as
Step-by-step explanation:
both ABC AND DEF are right triangles...
So Pythagoras theorem will work here
Chen is a lorry driver.
He earns a bonus if he drives at least 2.8 kilometres per litre of fuel.
The figures show some information about Chen's last journey.
Journey time 4.5 hours
Average speed 61 km/h
Amount of fuel used 96 litres
Work out whether Chen earned a bonus for this journey.
Answer:
Yes, Chen earned a bonus for the journey.
Step-by-step explanation:
1 hour = 61 km
4.5 hrs = 61 * 4.5 = 274.5 km
Now,
96 litres = 274.5 km
1 litre = 274.5/96 km
1 litre = 2.859 = 2.9 km (approximately)
So, he drived more than 2.8 kilometers per litre of fuel.
Answer:
Yes
Step-by-step explanation:
Calculating distance travelled by Chen
Journey time x Average speed4.5 hours x 61 km/h274.5 kmCalculating distance covered per litre of fuel
Distance covered / Amount of fuel used274.5 / 962.86 km/litreThe requirement was 2.8 km/litreTherefore, Chen has earned a bonus for this journeyif x=-1 and y=2 is the solution of the simultaneous equations .
ax-by=1
ay+bx=-7
Answer:ax-by=1
Step-by-step explanation:
the price of an x box reduced from $50 to $40. what percentage was the price reduced
Answer:
20% is taken away from 50 to get 40
Can s0mbody h3Lp me PLEASE!!!
HELP WANTED!
cuz i forgot how to do this
Answer:
Step-by-step explanation:
Remark
Just fill in the formula. If you don't have a formula sheet, it would be a good idea to make one.
Formula
C = 2*pi * r
Givens
pi = 3.14
r = 10 inches
C = ?
Solution
C = 2*pi * r Put the givens into the formula
C = 2* 3.14 * 10 Combine
C = 6.28 * 10
C = 62.8 inches.
Answer
C = 62.8 inches.
A large white canvas, 9' x 21', has two triangles painted on it, one with a base of a 1' and height of 3',
and the other with a right triangle with a hypotenuse of 5' and a side of 3'. What is the probability of
throwing a drop of paint into one of the triangles?
The probability of throwing a drop of paint into one of the triangles is 3.96% if a large white canvas, 9' x 21', has two triangles painted on it, one with a base of a 1' and a height of 3', and the other with a right triangle with a hypotenuse of 5' and a side of 3'
What is probability?It is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Total area of the canvas = 9' x 21' = 189 square units
This area is representing the total outcome = 189
Total favorable outcome = area of first triangle + area of the second
triangle
Area of the first triangle = (1/2)(1x3) = 3/2 square units
From the Pythagoras theorem:
Height = √(5² - 3²) = 4'
Area of the second triangle = (1/2)(3x4) = 6 square units
Total favourable outcome = 3/2 + 6 = 15/2
Now the probability:
[tex]= \frac{\frac{15}{2} }{189}[/tex]
= 15/378
= 0.0396×100
= 3.96%
Thus, the probability of throwing a drop of paint into one of the triangles is 3.96% if a large white canvas, 9' x 21', has two triangles painted on it, one with a base of a 1' and a height of 3', and the other with a right triangle with a hypotenuse of 5' and a side of 3'
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A sandwich shop sells a foot-long grinder for $8 and a calzone for $6. Which equation shows the relationship between the amount of each type of product sold and the total sales, in dollars?
A. 14(x + y) = z; x represents calzones sold; y represents grinders sold; z represents total sales
В. 6x + 8y = Z, x represents calzones sold, y represents grinders sold: z represents total sales
C. 14(x + y) = z; x represents grinders sold, y represents calzones sold, z represents total sales
D. 6x + 8y = z; x represents grinders sold; y represents calzones sold: z represents total sales.
Answer:
B. 6x + 8y = z , x represents the calzones sold; y represents grinders sold; z represents total sales.
The expression 40x2 – 65x 50 represents the sum of the interior angles of a regular pentagon in degrees. if the interior angles of the pentagon are equal, which expression represents the measure of two angles? 2x2(20 – 32x 25x2) 2(8x2 – 13x 10) 5x2(8x2 – 13x 10) 5(3x2 – 8x 5)
The expression which represents the measure of two interior angles of the provided regular pentagon is 16x²-26x+20.
What is regular Pentagon?Regular Pentagon is the closed shaped polygon which has 5 sides equal in measure and 5 interior angles equal in measure.
The expression, which angles represent the sum of the interior angles of a regular pentagon in degrees, is,
[tex]40x^2 - 65x +50[/tex]
The interior angles of the given pentagon are equal. A Pentagon has 5 sides. Thus, the measure of angle of interior angle of the regular pentagon is,
[tex]m\angle n=\dfrac{40x^2 - 65x +50}{5}\\m\angle n=\dfrac{5(8x^2 - 13x +10)}{5}\\m\angle n=8x^2-13x+10[/tex]
The measure of two angles is,
[tex]2m\angle n=2(8x^2-13x+10)\\2m\angle n=16x^2-26x+20[/tex]
Hence, the expression which represents the measure of two interior angles of the provided regular pentagon is 16x²-26x+20.
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please hepl check screenshot
Answer:
A) [tex]3x+1[/tex]
Step-by-step explanation:
[tex]\dfrac{6x^2+2x}{2x}[/tex]
Factor the numerator by factoring out the common term [tex]2x[/tex]:
[tex]\implies \dfrac{2x(3x+1)}{2x}[/tex]
Cancel the common factor [tex]2x[/tex]:
[tex]\implies 3x+1[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{6x^2+2x}{2x}[/tex]
[tex]\\ \rm\Rrightarrow \dfrac{2x(3x+1)}{2x}[/tex]
Cancel 2x[tex]\\ \rm\Rrightarrow 3x+1[/tex]
Option A
According to this box plot of test scores, the middle 50% of the class scored between what two scores?
options:
96-100
73-96
60-73
85-90
Answer:
I guess it's d not sure tho
Answer:
Im guessing 85-90
Step-by-step explanation:
IT COULD BE WRONG
Steve noticed that there were 72 lights on and 78 lights turned off.
What percent of the lights are on?
Answer:
48% of the lights are on.
Step-by-step explanation:
First, gather the total amount of lights by adding the on and off lights.
72 + 78 = 150
There are 150 total lights.
Now set up a fraction to determine the percentage.
lights on/total lights = 72/150
Divide 72 by 150.
72/150 = 0.48
Multiply this by 100 to get the percent.
0.48 * 100 = 48%
48 percent of the lights are on.
Answer:
48 percent
Step-by-step explanation:
Your welcome!
A company is going to make an oil container in the shape of a cylinder. As shown below, the container will have a height of 8 m and a radius of 6 m The container will be made from steel (including its top and bottom). Suppose the total cost of the steel will be 17,408.16 How much will the steel cost per square meter? Use for 3.14 and do not round your answer.
Step-by-step explanation:
Total surface area of a cylinder =
Area of curved surface (the round body) + area of two circular covers ( the top and bottom cover)
= 2πrh + 2πr²
= 2πr(h+r)
= 2 • 3.14• 6•(8+6)
= 527.52 m²
Cost per m²
= 17,408.16/527.52
= £33