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Answer:

(114.123, 115.877)

Step-by-step explanation:

Given that :

Sample size (n) = 500

Mean = 23% of 500 = 115

Standard deviation (s) = 2% of 500 = 10

α = 95%

Zcritical at 95% = 1.96

Confidence interval = Mean ± Error

Error = Zcritical * standard deviation /sqrt (n)

Error = 1.96 * 10/sqrt(500)

Error = 0.8765386

Lower boundary : 115 - 0.8765386 = 114.1234614

Upper boundary : 115 + 0.8765386 = 115.8765386

(114.123, 115.877)

Answer:

A cardioid

Step-by-step explanation:

A cardioid is a curve in the shape of a heart traced by a point on the circumference of a circle as it rolls around a fixed circle of the same radius.

The equation of vertical cardioid is [tex]r=a[/tex] ± [tex]a\sin \theta[/tex]

Given the polar curve is [tex]r=[/tex] [tex]1+[/tex] 4 [tex]\sin \theta[/tex]

This is an equation of vertical cardioid.

So, it represents a cardioid.

Answer:

C - a limaçon with an inner loop

Step-by-step explanation:

If you have a graphing calculator, use it to plug in the equation.

Based on what you have learned, you will recognize the graph is C

Answer: an arrow after it has hit the target and is at rest.

Step-by-step explanation:

Kinetic energy has to do with energy which a body possesses by virtue of being in motion. The arrow is not in motion anymore

Answer:2010 +2011+2010=6021

6+4 =11

Step-by-step explanation:add then you divide

Answer:

6.5x*16= y

Step-by-step explanation:

6.5x*12+4 =y

6.5x*16= y

i believe this is correct...

Answer:

Both A and B are correct because a negative divided by a negative makes a positive.

Hence, the expression which are equivalent to [tex]\frac{c}{d}[/tex] is both (A) and (B).

What are the expressions?

An expression in math is a sentence with a minimum of two numbers or variables and at least one math operation.

Here both the options (A) and (B) are correct because negative got cancel and it would be like the given expression.

Hence, the expression which are equivalent to [tex]\frac{c}{d}[/tex] is both (A) and (B).

To know more about the expression

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Answer:

subtract 1 from both sides

cube both sides

Step-by-step explanation:

nhfbgdvzfsdfexgrdtbfvdcfewzsxrdfcgvhjyvtfhcdgrxesrgdfcgvh

Answer:

5

Step-by-step explanation:

Use the Pythagorean Theorem

a²+b²=c² plug in the info you have

a²+12²=13² (c is always the side opposite from the right angle)

Solve for a

a²+144=169

   -144  -144

a²=25   take the square root of both sides

√a²=√25

a=5

Answer: Your answer is 1/35 or 35

Step-by-step explanation:

Answer:

Scalene, Acute

Step-by-step explanation:

scalene because the sides are of different length, and acute because it's less than 90°

Answer:

a

Step-by-step explanation:

because its parallel while d is perpendicular and b and c are diagonal

Answer:

point d based on my stuck knowledge

Answer:

i cant tell what your asking but i guess point a...

Step-by-step explanation:

Answer:

77.10-pound sterling

Step-by-step explanation:

Has not been rounded

Answer:

$1390

Step-by-step explanation:

Given that :

Let :

Cost of blender = x

Cost of coffee maker = x +563

2(x + 563) + 5x = 6915

2x + 1126 + 5x = 6915

7x = 5789

x = 827

Cost of coffee maker = (827 + 563) = 1390

Answer:

49 cents per ounce

Step-by-step explanation:

Answer:

y=3/7x+2

Step-by-step explanation:

can i have brainliest?

The angle is a 90 degree angle.

Answer:

80degrees

Step-by-step explanation:

Answer:

37.5%

Step-by-step explanation:

Answer:

37.5%

Step-by-step explanation:

Answer:

Note: The full question is attached as picture below

a) Hо : p = 0.71

Ha : p ≠ 0.71

p = x / n

p = 91/110

p = 0.83.

1 - Pо = 1 - 0.71 = 0.29.

b) Test statistic = z

= p - Pо / [√Pо * (1 - Pо ) / n]

= 0.83 - 0.71 / [√(0.71 * 0.29) / 110]

= 0.12 / 0.043265

= 2.77360453

Test statistic = 2.77

c) P-value

P(z > 2.77) = 2 * [1 - P(z < 2.77)] = 2 * 0.0028

P-value = 0.0056

∝ = 0.01

P-value < ∝

Reject the null hypothesis.  There is sufficient evidence to support the researchers claim at the 1% significance level.

Answer:

It's A

Step-by-step explanation:

Line e parallel to line g. Therefore, option A is the correct answer.

Parallel lines are those lines that are equidistant from each other and never meet, no matter how much they may be extended in either directions.

Given that, in a plane line e is parallel to line f line f is parallel to line g and line h is perpendicular to line e.

Since, e║f, f║g

So, e║g

Therefore, option A is the correct answer.

To learn more about parallel lines visit:

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Answer:

5 hours and 8 minutes is what I got, but i'm not really sure so only put that answer if someone else got that to. (The upcoming and this sentence is pre-written and copy and pasted in every brainly question or comment I write or answer.) If this answer helped you please consider giving it brainliest.

- •Trix•

( Yes I know my - •Trix• thingy is not my user but its what I would change it to if I could but I can't, please address me as Trix while commenting or talking to me here.)

Answer:

120?

Step-by-step explanation:

Let's solve the problem step by step: Let's assume the other number is x. According to the problem, the sum of the two numbers is 240. so we can write the equation as: [tex]x + y = 240[/tex]

To find the value of x, we need to substitute the value of y into the equation. Since y is given, we can substitute it. [tex]x + y = 240 x + y = 240 x + y + (-y) = 240 + (-y) x = 240 - y[/tex] Now, we have an equation expressing x in terms of y. To determine the value of x, we need to know the value of y.

Without that information, we cannot calculate the value of x specifically. However, based on the information given, we can conclude that the value of x will be equal to 240 subtracted by the value of y.

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Answer:

$4

Step-by-step explanation:

let t represent teddy bear and v represent vase, then

2t + 3v = 27 → (1)

3t + 2v = 30.5 → (2)

Multiplying (1) by 3 and (2) by - 2 , then adding will eliminate t, that is

6t + 9v = 81 → (3)

- 6t - 4v = - 61 → (4)

Add (3) and (4) term by term to eliminate t, that is

5v = 20 ( divide both sides by 5 )

v = 4

The cost of the flower vase is $4

Answer:

It is going to be $4.00

Step-by-step explanation:

Hope this helped have an amazing day!

Answer:

The correct selling price = $10.02

The manager's likely​ error = $6.02

Step-by-step explanation:

Markup of 67​% on all items

An item cost $6

The correct selling price = $6 + 67% of $6

= $6 + 0.67 × $6

= $6 + $4.02

= $10.02

The correct selling price = $10.02

The store manager's selling price is ​$4.

The manager's likely​ error = The correct spelling price - the manager's selling price

= $10.02 - $4

= $6.02

The manager's likely​ error = $6.02

Answer:

I am pretty sure it is 0.54

Answer:

The answer is 0.54. I have included a screenshot that shows the work and how to get 0.54. I hope this helps!

And by the way yes, I do know this is a 1-year-old question but I would like points and I have the answer.

:D

- Your friendly (late) responder

Answer:

y=x^2

Step-by-step  explanation:

Answer:

80%

Step-by-step explanation:

Answer:

80%

Step-by-step explanation:

This can be written algebraically as 24 = x of 30, where we have to find what percent of 30 is equal to 24. Of is the same as multiplication: 24 = x · 30  Then, solve for x. The answer is x = 0.8 and 0.8 as a percent is 80%.

Hope this helped! :)