Answer:
53.76 cm3
Step-By-Step Explanation
Can someone please help me, giving all answers hearts, thank you in advance
Answer:
D) y=-5/2x; y=-20
Step-by-step explanation:
If y varies directly with x, then y=kx where k is our proportionality constant
Therefore, since y=-5 when x=2, we have -5=k(2) where k=-5/2
This means that when x=8, y=(-5/2)(8)=-20, making choice D correct
All else being equal, if you cut the sample size in half, how does this affect the margin of error when using the sample
to make a statistical inference about the mean of the normally distributed population from which it was drawn?
zes
ME=
O The margin of error is multiplied by 0.5
O The margin of error is multiplied by a
O The margin of error is multiplied by 0.5.
O The margin of error is multiplied by 2.
Answer:
The margin of error is multiplied by 4.
Step-by-step explanation:
Margin of error is:
[tex]M = \frac{zs}{\sqrt{n}}[/tex]
In which z is related to the confidence level, s is elated to the standard deviation and n is the sample size.
From this, we have that the standard deviation is inversely proportional to the square root of the sample size.
If you cut the sample size in half:
The margin of error is inversely proportional to the square root of the sample size, so if you cut the sample size by [tex]\frac{1}{2}[/tex], the margin of error will be multiplied by [tex]2^2 = 4[/tex]
So
The margin of error is multiplied by 4.
For each of the following, indicate whether or not a paired analysis would be appropriate.
a. A school cafeteria offers a vegetarian and a nonvegetarian option for lunch every day. For a period of two weeks, you record how many calories are in the vegetarian option and how many calories are in the nonvegetarian option. Your goal is to see if vegetarian options tend to differ with regard to average number calories from nonvegetarian options.
b. A farmer investigates whether talking to cows by name leads to producing more milk. He randomly selects 30 of his cows and randomly assigns 15 to talk to by name and the other 15 not to.
Answer: a. a paired analysis is appropriate
b. a paired analysis is not appropriate
Step-by-step explanation:
The paired analysis sometimes is refered to as a statistical procedure which is used to know if the mean difference that exist between two observations is zero or not. It should be noted that in a paired analysis, each subject is measured twice, and this beings about the pairs of observations.
a. Here, the paired analysis is appropriate due to the fact that similar measurement which are the calories are taken for several days for both the vegetarian and the non vegetarian such are two pairs of sample.
b) In this case, the paired analysis is not appropriate. Here, the pairs of samples don't undergo identical treatment.
Enter the value of 3.5•(7-4.5).
Answer:
8.75
Step-by-step explanation:
3.5(2.5)
Answer:
8.75
Step-by-step explanation:
3.5(2.5)
2x27 ÷2+95x4
Help me
Answer:
407
Step-by-step explanation:
Using PEMDAS, we get that (2x27) ÷ 2 + (95x4)
54÷2+380
27+380
407
There are 67 rabbits in the garden. Round 67 to the nearest 10.
Answer:
70
Step-by-step explanation:
1-4 rounds down
5-9 rounds up
Jonn is giving out chocolate to his friends. If he wants to give each friend 2/3
of a chocolate bar and he has 13 friends, how many chocolate bars wil he
need to buy?
Which equation represents the data in this function table?
A. y = x - 8
B. x= y + 8
C. y = 3x
D. y = x + 3
Answer: The answer is B. Because 3 multiplied by x and add it by 3 equates to y. example: (x=2) 3x2+3= y. y=9 .
The answer is not b
Step-by-step explanation:
If the diameter is 111ft then the radius is
Answer:
55.5 is the I guess........
Which method can you use to prove that the triangles are congruent?
Answer:
The simplest way to prove that triangles are congruent is to prove that all three sides of the triangle are congruent. When all the sides of two triangles are congruent, the angles of those triangles must also be congruent. This method is called side-side-side, or SSS for short.
4 points
1. In which economic system are the factors of production privately
owned? *
Capitalism
Socialism
Command
O Confucianism
4 points
*
what is the government's role?
Answer:
Capitalism
Step-by-step explanation:
It's characterised by private ownership of the means of production.
The length of a rectangular lot is 6 feet less than 3 times its
width. Its area is 222 square feet.
Its width is
feet and its length is
feet.
Answer:
Its width is 9.66 feet and length is 22.98 feet.
Step-by-step explanation:
Let l is length and b is width of a rectangular lot.
Length, l = (3b-6) feet
The area of the lot is 222 sq feet.
The area of a rectangle is given by :
[tex]A=lb\\\\222=(3b-6)b\\\\222=3b^2-6b[/tex]
It is a quadratic equation. The solution of the above equation is given by :
b = 9.66 feet and -7.66 feet
Neglecting negative answer, the width of the lot is 9.66 feet.
Length, l = (3(9.66)-6) = 22.98 feet
Hence, its width is 9.66 feet and length is 22.98 feet.
help what is the perimeter measured in centimeters of the rectangle pictured below do not include units in your answer
Answer:
just x both together
Step-by-step explanation:
What is the product of x2 - 2x +3 and x+1?
How many times greater is the value of 5 in 532,874 than the value of 451,073?
Answer:
10 times greater is the value of 5 in 3,590 than the value of 5 in 359.
Step-by-step explanation:
Can you help on #5 I have to estimate & #5 simple yes or no please thank you
If you need an estimate for #5, then you can round each value to the nearest whole number to have...
21.6 turn into 2120.9 turn into 2119.4 turn into 1918.5 turn into 19Add up those values: 21+21+19+19 = 80
-------------------
Another estimate you could do is to round everything to 20, since we're close to this value. Having four copies of 20 added leads to 20+20+20+20 = 80
So they rode a total estimated amount of 80 miles
--------------------
The actual total is: 21.6+20.9+19.4+18.5 = 80.4 miles, which isn't too far off from 80.
Please help will give brainlyist
PLEASE HELP
2n-200 but n = 150
Answer:
Just plug in where n is= 150 then solve the answer is 100
Step-by-step explanation:
2(150)-200
Angle Relationships
Solve the following right triangle
Determine all the missing sides and angles
a.
BC = 5cm
AC = 4cm
∠B = 27°
∠C = 90°
b.
BC = 4.8cm
AC = 3.6cm
∠B = 37°
∠C = 180°
c.
BC = 4cm
AC = 3cm
∠B = 127°
∠C = 180°
d.
BC = 4.8cm
AC = 3.6cm
∠B = 127°
∠C = 180°
Please select the best answer from choices provided
Answer:
B.
BC = 4.8cm
AC = 3.6cm
∠B = 37°
∠C =90°
Step-by-step explanation:
I calculated it logically
Answer:
B
Step-by-step explanation:
Edg told me
200 points
What is the value of B and P for the following triangular prism?
30 ft 2
48 ft 2
72 ft 2
24 ft 2
Answer:
48 ft 2
Step-by-step explanation:
Identify the terms,like terms,coefficient and constants
Solve for z 7-√3z+2=4 What is the root? If there is no root, choose none. z = 7/3 z = 11/3 none
Answer:
Desmos is Function Calculator is a great tool for this, the correct answer is z= 7/3
7/3= 2.333~ and so √(3*2.333~) + 2= 2.9999999833333~
Now 7- 2.9999999833333~= 4.0000000166667~ but I don't know the true infinate sign for this so thats why my numbers look a little weird, just plug (7/3) in for z and you will get 4, trust me
Step-by-step explanation:
MRK ME BRAINLIEST PLZZZZZZZZZZZZZZZZZZz
a trader bought some eggs at 64 per dozen and sold 2/3 of them at 240/= per tray and the other 1/3 at 225/= per tray.In so doing she made a profit of 450/=.given 1 tray holds 30 eggs and 1 dozen 12 eggs determine the number of eggs she bought.
Note that the number of eggs the above-described trader bought is 180 eggs. This is solved using simple arithmetic.
What is the justification for the above response?
Let no. of the eggs be x, then
Money the trader paid for eggs = 64/12x = 16/3x
The money the trader got from
Seling two third eggs =2/3x*240/30
=16/3x
Money get from one third= x/3*225/30
=5/2
Profit= [16/3x+5/2x] - 16/3x
5/2x = 450
x =450*2/5
=180
Therefore, the number of eggs that the trader bought is 180.
Learn more about arithmetic:
https://brainly.com/question/11424589
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To rent a certain meeting room a college charges a reservation of $47 and an additional fee of $7.90 per hour the film club wants to spend less than $86.50 on renting the meeting room what are the possible amount of time for which they could rent the meeting room used T for the number of hours in meeting room is rented and solve your inequality for T
Answer:
9 hours.
Step-by-step explanation:
31 + 5.9*t < 84.10.
To solve it, collect the constant terms on the right side:
5.9*t < 84.10 - 31 = 53.10,
Hence, t < 53.10%2F5.9 = 9 hours.
can someone please answer this I need extreme help.
Answer:
hope this will help you more
01:14:51 A spinner is divided into 8 equal sections, and each section contains a number from 1 to 8. What is the probability of the spinner landing on a number that is greater than 5? 1 13 o colo 100 Next Submit Save and Exit Mark this and return
Answer:
the probability is 3/8
Step-by-step explanation:
an examination started 12.50 pm and lasted for 2 and half hours. at what time did it end
Answer:
3: 20 pm
[tex] = > hours = 12 and 2 + 1hour = > 3 \: pm \\ minutes = 30 - 10 = 20 \: minutes \\ it \: ended \: at \: 3 : 20 \: pm[/tex]
Answer:
it ended at 3.20pm
Step-by-step explanation:
12.50 to 1.50 is one hr
1.50 to 2.50 is two hrs
2.50 to 3.20 is two and half hrs
sally works at a local cookie store. out of the last 43 cookies sold, 9 were chocolate chip oatmeal. what is the experimental probability that the next cookie sold will be chocolate chip oatmeal. simplified fraction in the form a/b
Answer:
Step-by-step explanation:
9/43 but simplified is 0.209
The circumference of a circle is 87 cm. What is the DIAMETER of the circle?
A)
2 cm
B)
4 cm
C)
6 cm
D)
8 cm
Answer:8 cm
Step-by-step explanation:
Help me please this is very hard i got 8ft but it said I was wrong!?
Answer:
is the answer 200/3 Or 66.667 ft