Please help with this assignment

Using the z-distribution, the 95% confidence interval for the proportion of unsatisfactory meals is given by:

(0.0553, 0.0647).

A confidence interval of proportions is given by the following rule:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}[/tex]

In which:

The confidence level is of 95%, hence the critical value z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so the critical value is z = 1.96.

The estimate and the sample size of the interval are given as follows:

[tex]\pi = \frac{600}{10000} = 0.06, n = 10000[/tex]

The lower bound of the interval is given by:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.06 - 1.96\sqrt{\frac{0.06(0.94)}{10000}} = 0.0553[/tex]

The upper bound of the interval is given by:

[tex]\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.06 + 1.96\sqrt{\frac{0.06(0.94)}{10000}} = 0.0647[/tex]

Hence the interval in (LCL, UCL) format is:

(0.0553, 0.0647).

The problems asks for the 95% confidence interval of unsatisfactory meals, considering that, out of 10000 meals, 600 were unsatisfactory.

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Answer:

200k

Step-by-step explanation:

4x50=200

The cost of buying 4 kg of potatoes at 50k per kg is 200k.

To calculate the cost of buying 4 kg of potatoes at 50k per kg, you can simply multiply the weight (4 kg) by the price per kilogram (50k).

Cost = 4 kg * 50k per kg

Now, perform the calculation:

Cost = 200k

So, the cost of buying 4 kg of potatoes at 50k per kg is 200k.

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WS bisects angle BWV, m ∠BWS = 36° , then the measure of angle

m ∠BWV is equal to 72°.

As given in the question,

Measure of given angle :

m ∠BWS =36°   ____(1)

let 'x' be the measure of angle BWV

WS bisects angle BWV.

⇒ m ∠BWS= m ∠SWV

⇒ m ∠SWV=36° ____(2)

Also , m ∠BWV is equal to the sum of the measure of ∠ BWS and ∠SWV.

⇒ m ∠BWV =m ∠BWS + m ∠SWV

Substitute the value of m∠ BWS and m ∠SWV from (1) and (2),

⇒ m ∠BWV=36° + 36°

⇒m ∠BWV=72°

Therefore, WS bisects angle BWV, m ∠BWS=36° , then the measure of angle m ∠BWV is equal to 72°.

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In mathematics, an operation is a function that transforms 0-n operands or parameters into a known output value. The number of operands affects how complicated the operation is. 90.95 feet per second equates to 62 miles per hour.

An operation in mathematics is the function that converts 0–n parameters or operands into definite output value. The complexity of operation depends on how many operands there are.

The operations that are the most frequently studied are binary operations (i.e., operations of the arity 2), which include addition and multiplication, and the unary operations (i.e., operations of the arity 1), which include additive inverse and the multiplicative inverse. A zero-arity operation, also known as nullary operation, is a constant. An illustration of ternary operation, also known as an operation of arity 3, is the mixed product.

Usually, it is considered that arity is constrained. Even so, the infinitary operations are occasionally considered, in which case "normal" finite dimensionality operations are referred to as finiteary operations.

A partial operation is described as being similar to operation but using a partial function in place of a function.

1miles/hour= 1.467feet/second

62 miles/ hours= 62*1.467feet/second

                        = 90.95 feet/second

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The simplified form of the given expression ( a⁴b²c³d ) / acbd is equal to (a³bc² ) .

As given in the question,

Given expression :

 ( a⁴b²c³d ) / acbd

Simplified form of the given expression using rules of power and exponents:

Since this is division of algebraic fractions, the index (power or exponent) of the like literals in the numerator and denominator are to be subtracted. Thus index of variable a reduces from 4 to 1. Similarly index of variable b reduces from 2 to 1 and that of c reduces from 3 to 2. Lastly variable d remains in the denominator as there is no corresponding factor in the numerator.

( a⁴b²c³d ) / acbd

= (a⁴⁻¹ )(b²⁻¹ )(c³⁻¹ )(d¹⁻¹)

= a³ bc²d⁰

= a³bc²

Therefore, the simplified form of the given expression ( a⁴b²c³d ) / acbd is equal to (a³bc² ) .

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The number of elements that are there in the sample space is 6.

It should be noted that sample space simply means the collection or the set of possible outcomes that are in the random experiment.

From the information, in the special deck of cards has 10 cards. four are green, three are blue, and three are red.

Therefore, the sample space will be:

S = GH, GT, BH, BT, RH, RT

It should be noted that H and T represents the head and tail.

Therefore, there are 6 elements.

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Answer:

-0.54, 5.54

Step-by-step explanation:

[tex]x^2-5x-3=0 \\ \\ x=\frac{5 \pm \sqrt{25+12}}{2} \\ \\ x=\frac{5}{2} \pm \frac{\sqrt{37}}{2} \\ \\ x \approx -0.54, 5.54[/tex]

The Distance between line ℓ and the point j (-5,-1) is 8units.

The distance between a point PP and a line LL is the shortest distance between PP and LL; it is the minimum length required to move from point PP to a point on LL. In fact, this path of minimum length can be shown to be a line segment perpendicular to LL. The distance d can then be defined as the length of the line segment that has PP as an endpoint and is perpendicular to LL.

We know that the distance d between a point (x1,y1) and a line having equation in form of ax+by+c=0 can be expressed as,

[tex]d = \frac{|ax1+by1+c|}{\sqrt{(a^2+b^2)} }[/tex]

So, we have given that equation of line

y = 7

y-7=0

Point j = (-5,-1)

So, Distance between point j and line = d

d = [tex]\frac{|0(-5)+1(-1)-7|}{\sqrt{(0^2+1^2)} }[/tex]

d = [tex]\frac{8}{\sqrt{1} }[/tex]

d = 8 units

Therefore, The point j is at a distance of 8 units from the line ℓ.

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Answer:

8000 times 2x times 1

Step-by-step explanation:

(8 times 10^3) (2xtimes 10^1)

8 times 10^3=8000

= 8000 times 2x times 1

= 160000x

FINDING THE DIFFERENCE WE SUBRACT

[tex]8 - 4 \\ = 4[/tex]

FINDING THE QUOTIENT WE DIVIDE

[tex]8 \div 4 \\ = 2[/tex]

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The scale of drawing of Bonnie's drawing is 5 inches : 6 yards.

She measured a city and made a scale drawing.

The neighbourhood park is 115 inches long in the drawing. The actual park is 138 yards long.

Therefore, the scale of the drawing can be calculated as follows:

Hence,

115 inches = 138 yards

5 inches = ?

cross multiply

scale of the drawing = 5 × 138 / 115

scale of the drawing = 690 / 115

Therefore,

scale of the drawing is 5 inches : 6 yards

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Answer:

1 + 2 = 3

2 + 3 = 5

3 + 4 = 7

4 + 5 = 9

5 + 6 = 11

Step-by-step explanation:

The transformation for Rectangle A which would result in Rectangle B is: A. reflection across the x-axis.

A reflection can be defined as a type of transformation which moves every point of the object by producing a flipped but mirror image of the geometric figure.

In Mathematics, a reflection over the x-axis would maintain the same x-coordinate (10 → 10) while the sign of the y-coordinate changes from positive to negative (4 → -4) . Therefore, a reflection over the x-axis is given by this rule:

(x, y) → (x, -y) = (10, 4) → (10, -4).

In conclusion, a reflection across the x-axis would transform Rectangle A to Rectangle B.

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Answer:

23-i

Step-by-step explanation:

Multiply using the FOIL method and after that combine the real and imaginary parts of the expression.

a a a a a a a a a a a a a a a aa a a

Answer:x=1

Step-by-step explanation:

you would have to distribute the 5 into the (x+4)

then it would be

5x+20-3^2=2^4

then do the exponents

5x+20-9+16

then add 9 by both sides

5x+20=25

then subtract 20 on both sides

5x=5

then divide 5 on both sides

x=1

then check your work by putting 1 for x and you get 2^4=16

Answer:

Step-by-step explanation:

find x :

5( x + 4 ) - 3^2 = 2^4

5x + 20 - 9 = 16

5x = 16 - 20 + 9

5x = 5

x = 5 : 5

x = 1

----------------

check

5(1 + 4) - 3^2 = 2 ^4

25 - 9 = 16

16 = 16

the answer is good

 (-7,∞) &  (−∞, 1/2] are the interval notation.

What is interval notation in math?

8x-5>=6x-1 or 4+4x<=3x-3

8x-5 ≥6x-1

8x - 5 ≥ 6x - 1

8x - 6x ≥  5 - 1

 2x ≥  1

   x ≥  1/2

Therefore, x could be any number less than or equal to 1/2. In interval notation, this looks like

 (−∞, 1/2]

4+4x ≤ 3x-3

4 + 4x ≤  3x - 3

4x - 3x ≤  -3 - 4

   x ≤  -7

Therefore, x could be any number less than -7 , but x couldn't be -7, since that would make the two sides of the inequality equal. In interval notation, this looks like:

   (-7,∞)

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Answer:

I'm guessing the whole question is: "A car drives 283.5 miles in 4.5 hours. Assuming that the distance traveled directly with the time traveled, how far will the car travel in 7 hours?"

Step-by-step explanation:

If so, here's the answer:

441 miles will be traveled in 7 hours

You could find the speed in mph

To do that, divide 283.5 by 4.5 which gives us 63

because [tex]\frac{283.5 miles}{4.5 hours}[/tex] divide to get the 4.5 hours into 1 hour so, [tex]\frac{283.5/4.5}{1}[/tex]

63 mph times 7 hours = 441

Answer: m<1 = 151     m<2 = 29         m<3 = 151

[tex]\quad \huge \quad \quad \boxed{ \tt \:Answer }[/tex]

[tex]\qquad \tt \rightarrow \:\angle1 = 151° [/tex]

[tex]\qquad \tt \rightarrow \: \angle2 = 29 \degree[/tex]

[tex]\qquad \tt \rightarrow \: \angle3 = 151 \degree[/tex]

____________________________________

[tex] \large \tt Solution \: : [/tex]

We can use angle pairs of intersecting lines to find the remaining angles :

[tex]\qquad \tt \rightarrow \: \angle4 + \angle1 = 180 \degree[/tex]

[ linear pair ]

[tex]\qquad \tt \rightarrow \: 29 \degree + \angle1 = 180 \degree[/tex]

[tex]\qquad \tt \rightarrow \: \angle1 = (180 - 29) \degree[/tex]

[tex]\qquad \tt \rightarrow \: \angle1 = 151\degree[/tex]

next,

[tex]\qquad \tt \rightarrow \: \angle2 = \angle4[/tex]

[ by vertical opposite angles ]

[tex]\qquad \tt \rightarrow \: \angle2 = 29 \degree[/tex]

and,

[tex]\qquad \tt \rightarrow \: \angle3 = \angle1[/tex]

[ by vertical opposite angles ]

[tex]\qquad \tt \rightarrow \: \angle3 = 151 \degree[/tex]

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Answer:

16

Step-by-step explanation:

gof(-6) means g(f(-6))

f(-6)=-(-6)-2

=6-2=4

g(4)=4^2=16

When two amounts are proportionate, they fluctuate at the same rate, maintaining the constancy of their relationship.

Here x be the proportionality constant  its value 5.5.

Matthew bought 2 movie tickets for $11,

Rosa bought 7 movie tickets for $38.50.

let the value of per ticket is x

2x = 11 and 7x = 38.5

7x- 2x = 38.5 -11

x = 5.5

here x be the proportionality constant  its value 5.5.

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Answer: 21 quarters and 2 nickels.

Step-by-step explanation: $0.25(one quarter) x 21 = $5.25. $0.05(one nickel) x 2 = $0.10. $5.25 + $0.10= $5.35.

The surface area of the sphere is 84453.44 yards².

We are given that:

the ride goes around the widest circle of the sphere whose circumference is =  514.96 yard.

The widest circle of the sphere is the plane contains the sphere's center

The circumference of the widest circle is:

C = 2 π r

where r is radius of the sphere.

The surface area of the sphere is defined as:

A = 4 π r²

where  r is radius of the sphere.

So, we get that:

514.96 =2 π r

514.96= 2 × 3.14 × r

r = 514.96 ÷ (2 × 3.14)

r = 514.96 ÷ 6.28

Surface Area A = 4 π r²

A = 4 × 3.14 × (514.96 ÷ 6.28) × (514.96÷ 6.28)

A = 84453.44 yards²

Therefore, we get that, the surface area of the sphere is 84453.44 yards².

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The correct answer to the task 0.80 divided by 50 given above is 0.016

When we are trying to find the number of times a number can be obtained in another number, we use the term "division" to describe the mathematical expression. The division can be represented as ÷

For instance, the division of 0.80 by 50 is represented and solved below:

0.80 ÷ 50 = 0.016

It can also be represented like this:

0.80 / 50 = 0.016.

Another example of division of numbers is:

8/4 = 2

10 ÷ 2 = 5

So therefore, from the explanation given above we can confirm that when 0.80 ÷ 50, the answer is 0.016.

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The given function y = x³ is not a linear function but a cubic function.

For the given function;

y = x.x.x

This, can be written, after adding the power of x as;

y = x³

Now, put x = 1; y = 1

Put x = 2; y = 8

Put x = 3; y = 27

This will not form a straight line but a cubical curve.

As, the function is not changing linearly but cubical.

Thus, the function is not linear function.

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The mean number of people per day visiting in August will be equal to option (D) 180.

Mean number of students in July = 160

20 more people visited the people each day in the month of August.

As, there is a constant increase in the number of who are visiting the museum in August each day that is 20 people, the mean will also increase by the same number that is 20 and will be:

Mean number of people per day visiting in August = 160 + 20

Mean number of people per day visiting in August = 180

Therefore, we get that, the mean number of people per day visiting in August will be equal to option (D) 180.

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Answer:

4 inches

Step-by-step explanation:

the cube has a volume (V) calculated as

V = s³ ( s is the side length )

given V  = 64 , then

s³ = 64 ( take the cube root of both sides )

s = [tex]\sqrt[3]{64}[/tex] = 4

side length is then 4 inches

Answer:

80%

Step-by-step explanation:

you're occupying 800 out of 1000

the way to write this mathematically is to write: 800/1000,

which equals 0.8

then to make this a percentage you x100

and your answer is 80%

Answer:

Here are all 3 number combinations that you can multiply to get 300: 300 × 1 × 1 = 300 150 × 2 × 1 = 300 150 × 1 × 2 = 300 100 × 3 × 1 = 300: