Answer:
CI 90 % = [ 0,165 ; 0,235 ]
Lower limit 0,165
upper limit 0,235
Step-by-step explanation:
Sample information:
sample size n = 225
number of dissatisfied individuals x = 45
p = 45/225
p = 0,2 and q = 1 - p q = 1 - 0,2 q = 0,8
p*n = 0,2*225 = 45 and q*n = 0,8*225 = 180
p*n and q*n big enough to use the approximation of binomial distribution to normal distribution
90 % of Confidence Interval then a significance level is α = 10%
α = 0,1 in z table we get z(c) for that significance level
z(c) = 1,28
CI 90 % = [ p ± z(c)*√(p*q)/n ]
z(c) * √(p*q)/n = 1,28 * √ ( 0,2*0,8)/225
z(c) * √(p*q)/n = 1,28 * 0,027
z(c) * √(p*q)/n = 0,035
CI 90 % = [ 0,2 ± 0,035 ]
CI 90 % = [ 0,165 ; 0,235 ]
Lower limit 0,165
upper limit 0,235
Solve the system of equations: y = 2x – 8 and y = -2x - 8
Answer:
Oh
Step-by-step explanation:
Answer:
x = 0
Step-by-step explanation:
2x - 8 = -2x - 8
4x - 8 = -8
4x = 0
x = 0
Last week Jovanna ran 30 miles
more than Rachel. Jovanna ran
47 miles. How many miles did
Rachel run?
Answer: 17 miles
Step-by-step explanation:
47 - 30 = 17
What is the volume of a cube that has a side of 4 units?
Answer: 64units³
Step-by-step explanation:
The volume of a cube will be gotten by multiplying the value of its side thrice. This means that for example if the cube has a side of xcm, the volume will be:
= x × x × x
= x³
In this case, since the cube has a side of 4 units, the volume will be:
Volume of cube = 4³
Volume of cube = 4 × 4 × 4 = 64unit³
Write the word sentence as an inequality.
Three times a number h is at least -12 .
Answer:
Step-by-step explanation:
3h<-12
Answer:
3h [tex]\geq[/tex] -12
Step-by-step explanation:
"3 multiplied by a number h" = 3h // "Is at least" = [tex]\geq[/tex] // -12 = -12
Combine these and you get 3h [tex]\geq[/tex] -12
can anyone solve this?
Answer:
Using the height theorem:
[tex]n^2=8*4=32=>n=4\sqrt{2}[/tex]
Now we can easily use the pythagorean theorem:
[tex]8^2+(4\sqrt{2})^2 =64+32=96=>m=\sqrt{96} =4\sqrt{6}[/tex]
if u(x)=-2x^2+3 and v(x)=1/x, what is the range of (uxv)(x)
Answer:
u(x)=−2x2+3.
Step-by-step explanation:
v(x )=1x whichever notation you prefer: (u∘v)(x)=u(v(x)).
Answer:
u(x)=−2x2+3.
Step-by-step explanation:
Math emended. D d did dnend d d d d d dd
Answer:
huh?
Step-by-step explanation:
whats the questionnnnnnn
What is the area of the 3.1 by 1.4 rectangle?
Answer: 4.34
Step-by-step explanation:
Find the area of the object.
Use the formula.
Show me how you substitute into the formula.
Give me the answer with the correct unit.
Explain how you use a net to find the surface area of a prism.
Answer:
Hello, Here is your answer.
Finding the areas of each of the rectangles and squares of the net of a rectangular prism and adding up those areas gives the surface area or total surface area of the prism. For example, if the length of one side of the cube 4 units then the area of one its face is 4 × 4 = 16 square units.
Answer:
Step-by-step explanation:
By drawing a net, you can see each face of the prism. You can find the areas of each face and then add them together to find the total surface area.
Omg please help this is IMPORTANT
Answer:
first one is correct and second also but in third it is incorrect and fourth is correct so C is incorrect
Answer:
C
Step-by-step explanation:
the quotient of a number means n divided by or n/
and twelve plus four, means that is the second part of the expression
n/ 12+4 would be correct instead of 12/n +4
A bag contains 4 red balls and 6 green balls. You plan to select 3 balls at random. Determine the probability of selecting 3 green balls.
add
3×+8y-12zand5x-7y+15z
help meee
3x+5x+12z+15z+8y+7y
8x+17z+15y
Answer:
[tex]3x + 8y - 12 z + 5x - 7y + 15z \\ 8x + y + 3z[/tex]
Step-by-step explanation:
I hope this helps you
Help me plz plz plz plz plz plz plz plz plz plz plz plz plz :(
A garden store purchased a lawn mower and marked it up 160% from the original cost of $82.67. A week later, the store placed the lawn mower on sale for 10% off. What was the discount price?
Answer:
193.45
Step-by-step explanation:
The discount price is $69.4428.
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
A garden store purchased a lawn mower and marked it up 160% from the original cost of $82.67.
So, the Marked up amount
= 160 % of 82.67
= $132. 272
and, then 10% discount
= 10% of 132.272
= 13.2272
so, the discount price = 82.67 - 13.2272 = $69.4428
Learn more about Unitary Method here:
https://brainly.com/question/22056199
#SPJ6
20 points someone please help me asap???
Answer:
yesss
Step-by-step explanation:
Plz help me well mark brainliest if correct......?
Answer:
It think it is A brainliest?
Step-by-step explanation:
A bake
sale committee wants to raise $186 for a donation to a local charity they set a size $12 of their profit at the end of each day how many days will it take them to raise enough money for the whole donation
Answer:
15 and a half days
Step-by-step explanation:
Since they earn $12's each day you would do $186 divided by $12 which would be 15.5 so it would take them 15 and a half days to raise $186.
Answer:
Sorry if this is late, but I hope you understand now.
Step-by-step explanation:
It's 16 days actually, if you divide 186 divided by 12, it's 15.5 we can say, that 5 should be rounded up or down. 15.5 is a fraction of 15/5 so if we rounded it, it would be 16. That's our newer version of rounding. 5 is higher, 4 is lower. Use that to help you :) I hope you understand even though it late
What is the value of the expression of x=5 6x^3 +8x
Answer:
790
Step-by-step explanation:
Substitute the value (x = 5) into the following expression, replace the parameter (x) with the value (5) wherever the parameter (x) is present,
[tex]6x^3+8x[/tex]
[tex]6(5)^3+8(5)[/tex]
Simplify use the order of operations. The order to operations is the system of steps that one uses to solve an equation, these steps are the following,
1. Parenthesis
2. Exponents or Radicals
3. Multiplication or Division
4. Addition or subtraction
Quick note, a number to any exponent is equal to the number times itself the number of times the exponent indicates.
Use these steps to simplify the given expression,
[tex]6(5)^3+8(5)\\\\=6(125)+8(5)\\\\=750+40\\\\=790[/tex]
Solve for the value of z
Answer:
z=26
Step-by-step explanation:
4z-8+3z+6=180
7z-2=180
7z=182
z=26
Answer:
z=26
Step-by-step explanation:
add the 2 equation together to equal 180
4z-8+3z+6
combine like terms
7z-2=180
add 2 to both sides
7z=182
divide by 7 to isolate z
z=26
A circle has a radius of 4 inches. What is
the circumference?
A.25.12 inches
B.12.56 inches
Answer:
4 x 3.14 x 2 = 25.12 inches
Step-by-step explanation:
Formula of circumference:
3.14(pi) x 2(the number is just always there when finding circumference) x radius(half of your diameter or just your given radius).
A man drove a total round trip distance of 646.25 miles. His car used 12 gallons of gas in one direction and 11.5 on the return trip. What was his average mileage for the entire trip?
Answer: 27.5
Step-by-step explanation:
can someone pls help i dont get any help here anymore
yly 115°x X y = [? ]
Answer:
x = 65°
y = 25°
Step-by-step explanation:
x = 180-115 which equals 65°
y = 180-(90+65) which equals 25°
Plzzzzz help for a brainly
Answer:
Circle
Step-by-step explanation:
The horizontal cross section of a cylinder is a circle
Answer:
Circle
Step-by-step explanation:
The horizontal cross section is a circle. If we slide the figure in half, the shape it would show is a circle.
If you have any questions, comment!!
Hope this helped!! :)
One of the legs of a right triangle measures 10 cm and its hypotenuse measures 17 cm.
Find the measure of the other leg. If necessary, round to the nearest tenth.
Classify the number as natural, whole, integer, rational, and/or irrational. Select all terms that are correct. Natural Whole Integer Rational Irrational V7
Answer:
irrational is the only correct term because it's not a perfect Square
Given LP, LM = (3x + 1), MN = (4x –3), NP = (6x – 5), and LM =NP.
M
AN
What is the length of MP?
Answer:
[tex]MP = 12[/tex]
Step-by-step explanation:
Given
[tex]LM = (3x + 1), MN = (4x -3), NP = (6x - 5)[/tex]
[tex]LM = NP[/tex]
Required
Find MP
We have:
[tex]LM = NP[/tex]
This gives:
[tex]3x + 1 = 6x - 5[/tex]
Collect like terms
[tex]3x - 6x = -1-5[/tex]
[tex]-3x = -6[/tex]
Solve for x
[tex]x = 2[/tex]
MP is calculated as:
[tex]MP = MN + NP[/tex]
[tex]MP = 4x - 3 + 6x - 5[/tex]
Collect like terms
[tex]MP = 4x + 6x - 3 - 5[/tex]
[tex]MP = 10x - 8[/tex]
Substitute [tex]x=2[/tex]
[tex]MP = 10*2 - 8[/tex]
[tex]MP = 20 - 8[/tex]
[tex]MP = 12[/tex]
no links Pwease help this is very important I will give you brain thing if its correct ♡
Answer:
B, C
Step-by-step explanation:
juan and jose are in charge of buying candy for pinatas. Each pinata will hold 6 pounds of candy how many puonds of candy will they need to fill 12 pinatas
Answer:
75.36
Step-by-step explanation:
bc it sinple math if you think about it
Represent the following sentence as an algebraic expression, where "a number" is the
letter x. You do not need to simplify.
Twice the difference of 1 and a number.
Answer:
2(1 - x)
Step-by-step explanation:
Twice the difference of 1 and a number
a number = x
The difference of 1 and a number is expressed as :
1 - x
Twice this difference, means the difference of (1-x) multiplied by 2
2 * (1 - x) = 2(1 - x)
Pwease help i will give you brain thing if its correct ♡
Answer:
1. A, B, C, E
2.Im not sure I think A
hope this helps
have a good day :)
Step-by-step explanation: