high voltage, inc., a light bulb manufacturer, wants to know if there's a difference in mean life span between its product and that of a competitor. they collect paired data and calculate the difference in each pair to create one set of numbers that represents the differences within each pair. what notation should high voltage use to construct its null and alternative hypotheses?

Answer: The radius of a circle is half of its diameter. Therefore, if the diameter of the circle is 3 cm, then the radius is 1.5 cm.

To set a pair of compasses to draw a circle with diameter 3 cm, open the compasses to a distance of 1.5 cm (which is the radius of the circle). The correct diagram in the link provided shows the compasses set to the correct radius.

So its A

The radius of the circle is 1.5cm.

A circle's diameter is divided in half by its radius. Thus, if the circle's diameter is 3 cm, the radius is:

radius = diameter/2 = 3cm/2 = 1.5cm

Any circular object's radius is the measurement from the centre to its outermost border or boundary. A radius is a dimension that applies to spheres, semispheres, cones with circular bases, and cylinders with circular bases in addition to circles.

It is possible to define a circle as the locus of a point travelling on a plane while maintaining a constant distance from a fixed point. The radius of a circle is the distance from any point on the circle to its centre. The fixed point is referred to as the centre of the circle.

The distance along a line drawn between two points on a circle and through the centre of the circle is the diameter of the circle. It is equivalent to double the circle's radius. It is typically indicated with a d or a D.

Diameter = 2 x Radius

Or

Radius = diameter / 2.

The circle's longest chord equals its diameter.

Moreover, we may relate a circle's area and circumference to its diameter.

Circle circumference equals (Diameter)

Circle area equals /4 (Diameter[tex])^2.[/tex]

from the question;

A circle's diameter is divided in half by its radius. Thus, if the circle's diameter is 3 cm, the radius is:

radius = diameter/2 = 3cm/2 = 1.5cm

Therefore, the radius of the circle is 1.5cm.

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Step-by-step explanation:

(a + 1/a)³ = a³ + 3a + 3/a + 1/a³

We are given that a + 1/a = 4, so we can substitute that into the identity and simplify:

(a + 1/a)³ = (4)³ = 64

a³ + 3a + 3/a + 1/a³ = 64

a³ + 1/a³ + 3(a + 1/a) = 64

a³ + 1/a³ + 3(4) = 64

a³ + 1/a³ = 52

Therefore, we have proved that a³ + 1/a³ = 52 when a + 1/a = 4.

Answer:

it's negative one over five...... -1\5

The solution is,  the length of TQ, in centimeters, to the nearest whole number is 167cm.

What is the scale factor?

A scale factor is when you enlarge a shape and each side is multiplied by the same number. This number is called the scale factor. Maps use scale factors to represent the distance between two places accurately.

here, we have,

given that,

Triangles PQR and SQT are similar.

so, from the given figure we get,

PR/ST = RQ/TQ

now, we have,

the scale factor = PR/ST

                         = 75/50

                         =3/2

                         = 1.5

so,  RQ/TQ = 1.5

or, TQ = RQ/1.5

          =250/1.5

          =166.66

Hence, The solution is,  the length of TQ, in centimeters, to the nearest whole number is 167cm.

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The pοpulatiοn οf the bacteria after 5 days is 96.

An expοnential functiοn is a mathematical functiοn οf the fοrm f(x) = ab^x, where a and b are cοnstants, and x is a variable. The base, b, is a pοsitive number, typically greater than 1, that determines hοw quickly the functiοn grοws οr decays. The expοnent, x, is the independent variable, and represents the pοwer tο which the base is raised.

Tο find the pοpulatiοn οf the bacteria after 5 days, we need tο substitute t = 5 intο the given functiοn:

p(5) = 3(2)⁵

Simplifying the expressiοn, we get:

p(5) = 3(32)

p(5) = 96

Therefοre, the pοpulatiοn οf the bacteria after 5 days is 96.

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The area of each small triangle is equal to √(7)/8 times the square of the length of one side of the square.

First, we need to find the area of the larger triangle that is created by placing the two small triangles on top of the square. Let's call the base of the larger triangle "b" and the height of the larger triangle "h".

To find "b", we can use the length of one side of the square since the two small triangles are placed on top of the square. Let's call the length of one side of the square "s".

Since the two small triangles are congruent, we know that the base of each small triangle is equal to half of one side of the square, which is s/2. Therefore, the total base of the larger triangle is equal to the sum of the bases of the two small triangles, which is s/2 + s/2 = s.

To find "h", we need to use the Pythagorean theorem since the larger triangle is a right triangle. Let's call the hypotenuse of the larger triangle "c". Since the hypotenuse is the diagonal of the square, we know that its length is √(2)*s.

Using the Pythagorean theorem, we can find the height of the larger triangle:

h² + (s/2)² = c² h² + (s/2)² = (√(2)s)² h² + s²/4 = 2s² h² = 7s²/4 h = √(7)/2 x s

Now that we have found "b" and "h", we can use the formula for the area of a triangle:

Area = 1/2 x base x height

Area of the larger triangle = 1/2 x s x √(7)/2 x s = √(7)/4 x s²

Finally, we can find the area of each small triangle by dividing the area of the larger triangle by two:

Area of each small triangle = 1/2 x (√(7)/4 x s²) = √(7)/8 x s²

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The angle pairs are:

1. E. same side interior angles

2. G. Corresponding angles

3. A. Vertical angles

4. I. Supplementary angles

Angle pairs are two angles that share a common side and a common vertex. Angle pairs are important in geometry because they allow us to study the relationships between angles and the properties of geometric figures.

There are several types of angle pairs, including:

By understanding the properties of these angle pairs, we can solve problems in geometry involving angles and their measures.

Therefore:

1. The angles are E. same side interior angles

2. Angles labelled 2 are: G. Corresponding angles

3. Angles labelled 3 are: A. Vertical angles

4. Angles labelled 4 are: I. Supplementary angles

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Answer:

210°

Step-by-step explanation:

Measure of unknown arc = Measure of full circle - Measure of given arc

= 360° - 150°

= 210° --- Option D

Please mark brainliest.

Thanks.

The expression for Kanika's mother's age, given Kanika's age and her father's is 32 + x .

To find Kanika's mother's age, we need to first find Kanika's age in relation to her father's who is 35 years more than her age.

Her father's age is therefore:

= Kanika's age + 35

= x + 35

Kanika's mother is 3 years less than the father which makes it :

= x + 35 - 3

= x + 32

In conclusion, Kanika's mother's age when expressed in terms of Kanika's age, is x + 32 .

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The first part of the question is:

Let Kanika's present age be x years. Her father's age exceeds her age by 35 years

Step-by-step explanation:

To know how many eighths you have in two bars, simply divide 2 by 1/8

2/1 ÷ 1/8

Ans 2÷ ⅛

Answer:

C. Dwayne begins with more tickets than Lyla.

Step-by-step explanation:

We can see from the chart and what is given that Dwayne starts with 600 tickets and Lyla starts with 500 tickets.

Dwayne is selling 5 tickets per minutes, just like Lyla; Option A and B are false. You can calculate Dwayne's sell rate using the slope formula.

[tex]\frac{600-580}{8-4} =\frac{20}{4} \\ = 5[/tex]

Choice D. is false because we just said that Dwayne started with 100 more tickets than Lyla.

By working out or simplifying the given statement we will get  a)  26 and the equation b)  8 2/3.

In mathematics, a fraction is used to denote a piece or component of the whole. It stands for the proportionate components of the whole. Numerator and denominator are the two components that make up a percentage. The numerator is the number at the top, and the remainder is the number at the bottom.

a) By converting the numbersr into improper fraction we will get

4 1/3 = (4 x 3 + 1) / 3 = 13 / 3

By multiplying the both of the fractions:

13 / 3 * 6 =[tex]\frac{78}{3}[/tex] = 26

= 4 1/3 * 6 simplifies to 26.

b) Now we will convert both of the mixed numbers to improper fractions and we will get :

[tex]\frac{23}{5}[/tex] = [tex]\frac{2*5+3}{5}[/tex] = [tex]\frac{13}{5}[/tex]

[tex]\frac{31}{3}[/tex] = [tex]\frac{3*3+1}{3\\}[/tex] = [tex]\frac{10}{3}[/tex]

By multiplying both of the  fractions:

[tex]\frac{13}{5} * \frac{10}{3\\}[/tex] = [tex]\frac{130}{5}[/tex]

We can simplify say that the fraction by dividing both of the numerator and denominator by their greatest common factor, which is 5:

[tex]\frac{130}{15}[/tex] =[tex]\frac{26}{3\\}[/tex]

Therefore, we come to a conclusion where

2 3/5 * 3 1/3 simplifies to 26/3 or 8 2/3.

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As in the given circle, the measure of the value of ∠X is 115°.

Now, let's look at point X. This point is on the same line as point B and is also on the circle. Since the angle subtended by an arc at the center of a circle is twice the angle subtended by the same arc at any point on the circle, we can find the measure of ∠AXB by first finding the measure of arc ACB. Since arc ACB is subtended by ∠AOC, which measures 90°, we can find the measure of arc ACB by subtracting 40° (the measure of ∠ABC) from 90°. Therefore, arc ACB measures 50°. This means that ∠AXB is half the measure of arc ACB, so ∠AXB measures 25°.

Therefore, the measure of ∠X is 180° minus the sum of ∠AXB and ∠ABC, which gives us:

∠X = 180° - (25° + 40°) = 115°.

So, the measure of ∠X is 115°.

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Complete Question:

If O is the center of the circle of the figure and the ∠ABC = 40°, then the measure of ∠X

The constraint 2X - Y = 0 states that the difference between variable X and twice variable Y must be equal to 0, meaning that X must be exactly twice the value of Y.The correct answer is C. 2X - Y = 0.

This constraint states that the difference between variable X and twice variable Y must be equal to 0. In other words, the value of variable X must be exactly twice the value of variable Y. This can be mathematically represented as 2X - Y = 0, meaning that 2 multiplied by X minus Y must equal 0. To illustrate this, let us assume that the value of variable X is 10 and the value of variable Y is 5. This means that 2X is equal to 20 and Y is equal to 5. When we subtract Y from 2X, we get 20 - 5 = 15. However, since the constraint states that the difference between X and twice Y must equal 0, the value 15 does not satisfy the condition. Therefore, the values of X and Y must be adjusted until the difference between X and twice Y equals 0. To satisfy the constraint, the value of X must be equal to 20 and the value of Y must be equal to 10. This means that X is exactly twice the value of Y, which satisfies the condition set by the constraint 2X - Y = 0.

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The elevation at point B is 740 ft. So, option B is correct.

The elevation is the height above or below a specified reference point, most frequently a reference geoid, which is a mathematical representation of the Earth's sea level as an equipotential gravitational surface, determines a location's elevation.

There are Four points that are displayed on the given map whose range are from A to D.  There are few additional lines in between these four places. The height between these points and lines is indicated on the map in feet, and from point A onwards there is an elevation difference of 20 feet. Point A is at the 700 ft and there is one more line between A and B, and the elevation difference in between one line is 20. So the elevation difference at point B is = 700 + 20 +20= 740 ft. So, option answer is B.

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Answer:find the inverse of f(x)=3x+2. Inverse functions, in the most ...

Step-by-step explanation:

By CER methοd it can be cοncluded that ABCD is a parallelοgram.

CER stands fοr "Cοngruent, Equal, and Midpοint Rule". This methοd is based οn the prοperties οf parallelοgrams, where οppοsite sides are parallel and cοngruent, and οppοsite angles are equal. By using the CER methοd, we can prοve that a quadrilateral is a parallelοgram if it satisfies the cοnditiοns οf having οppοsite sides cοngruent, οppοsite angles equal, and diagοnals bisecting each οther at their midpοint.

Tο shοw that ABCD is a parallelοgram, we need tο demοnstrate that bοth pairs οf οppοsite sides are parallel.

Let's begin by finding the slοpe οf each side using the fοrmula:

slοpe = (change in y) / (change in x)

Slοpe οf AB = (3 - (-1)) / (1 - 2) = 4/-1 = -4

Slοpe οf BC = (5 - 3) / (6 - 1) = 2/5

Slοpe οf CD = (1 - 5) / (7 - 6) = -4

Slοpe οf DA = (-1 - 1) / (2 - 7) = -2/5

Nοw, we can use the fact that twο lines are parallel if and οnly if their slοpes are equal. Thus, we need tο check whether AB is parallel tο CD and whether BC is parallel tο DA.

AB is parallel tο CD if their slοpes are equal. Since the slοpe οf AB is -4 and the slοpe οf CD is alsο -4, we can cοnclude that AB is parallel tο CD.

BC is parallel tο DA if their slοpes are equal. Since the slοpe οf BC is 2/5 and the slοpe οf DA is alsο 2/5, we can cοnclude that BC is parallel tο DA.

Therefοre, since bοth pairs οf οppοsite sides are parallel, we can cοnclude that ABCD is a parallelοgram.

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The effect of the tax increase from 2012 to 2013 for a house with a value of 100,000 was an increase of 76.

The property tax in one town was 6.95 per 1000 value in the year 2012. In 2013, the property tax increased to 7.71 per 1000 value. This means that in 2013, the property tax for a house with a value of 100,000 would be 771.

To calculate the effect that the tax increase had on the property tax for a house with a value of 100,000, we can use the following formula:

Effect of Tax Increase = (New Tax Rate - Old Tax Rate) x Value of Property

Using this formula, the effect of the tax increase for a house with a value of $100,000 would be:

Effect of Tax Increase = ($7.71 - $6.95) x $100,000

Effect of Tax Increase = $0.76 x $100,000

Effect of Tax Increase = $76

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As a result, the arithmetic progression's first term is 22 and its first fifteen terms add up to 735. The AP's initial term is 22 and its first fifteen terms add up to 735.

The total of the first seven terms is seventy-five.

The formulae for the nth term and the sum of an arithmetic progression can be used to solve the issue.

We have the following using the nth term formula:

a + 5d = 37\s(6/2)(2a + 5d) = 147

3a + 15d = 147\sa + 5d = 49

We may find a by substituting d into either equation and finding:

a + 5(-3) = 37\sa = 22

Hence, the first term of the arithmetic progression is 22 and the formula for the total of the first fifteen terms is (15/2)(2a + 14d) = 735.

(15/2)(2(22) + 14(-3)) = 735

If we simplify, we get:

15 terms added together is 735

As a result, the AP's first term is 22 and its first fifteen terms add up to 735.

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a) The minimum number of hikers who could have walked between 6 miles and 17 miles is 9.

b)  The maximum number of hikers who could have walked between 6 miles and 17 miles is 19.

When the derivative equals 0, we will rearrange the function using elementary algebraic principles to find the value for x. The x-coordinate of the function's vertex, which will be the point where the maximum or lowest will occur, and this is provided in this answer.

The solution will be put back into the original function to determine the minimum or maximum.

Thus, looking at the given table, minimum number will be 9

Similarly the maximum number will be 15 hikers.

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Answer:

Jaclyn spent $37 less than 2 times what Tracy spent:

2x - 37Jaclyn spent $13:

13We can set these two expressions equal to each other to get an equation:2x - 37 = 13Now we can solve for x:2x = 50x = 25So Tracy spent $25.

Answer:

Tracy spent $25.

Step-by-step explanation:

Tracy spent x.

" Jaclyn spent ​$37 less than 2 times what Tracy spent."

Jaclyn spent 2x - 37

Jacklyn spent $13

2x - 37 = 13

Add 37 to both sides.

2x = 50

x = 25

Tracy spent $25.

1.   If the first envelοpe cοntains the largest amοunt, then yοu take it and stοp. The prοbability οf this happening is 1/4.

Prοbability is the study οf the chances οf οccurrence οf a result, which are οbtained by the ratiο between favοrable cases and pοssible cases.

a) If yοu take the first envelοpe, the prοbability that it cοntains the largest amοunt is 1/4.

b) If yοu οpen the first envelοpe, nοte that it cοntains the amοunt x, and take the next amοunt which is larger than x (if nο such amοunt shοws up, yοu must take the last envelοpe), the prοbability that yοu get the largest amοunt is 1/3.

Tο see why, cοnsider the fοllοwing cases:

2.   If the first envelοpe dοes nοt cοntain the largest amοunt, but the secοnd envelοpe dοes, then yοu discard the first envelοpe and take the secοnd οne. The prοbability οf this happening is (3/4) x (1/3) = 1/4.

3.   If the first twο envelοpes dο nοt cοntain the largest amοunt, but the third οne dοes, then yοu discard the first twο envelοpes and take the third οne. The prοbability οf this happening is (3/4) x (2/3) x (1/2) = 1/4.

4.   If the first three envelοpes dο nοt cοntain the largest amοunt, then yοu must take the last envelοpe, which has the largest amοunt with prοbability 1/4.

c) If yοu οpen the first twο envelοpes, call the amοunts x and y, and discard bοth and take the next amοunt that is larger than bοth x and y, the prοbability that yοu get the largest amοunt is 1/2.

Tο see why, cοnsider the fοllοwing cases:

1.   If the largest amοunt is in the first twο envelοpes, then yοu must take the last twο envelοpes, and the prοbability οf getting the largest amοunt is 1/2.

2.   If the largest amοunt is nοt in the first twο envelοpes, then yοu must take the third οr fοurth envelοpe, and the prοbability οf getting the largest amοunt is 1/2.

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The probability of the fifth job being the first one that is forced to wait for a second quantum is 0.0266.

Probability is the measure of the likelihood of an event occurring. It is expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty. Probability is calculated by taking all possible outcomes into consideration and then dividing the number of favourable outcomes by the total number of possible outcomes.

The probability that an arriving job is forced to wait for a second quantum is the probability of that job requiring more than 100ms of CPU time. This probability can be calculated by taking the cumulative distribution function of the exponential distribution and subtracting the probability of the job requiring 100ms or less of CPU time. The probability of the job requiring more than 100ms of CPU time is 0.6853.

This probability can be calculated by taking the probability of the first four jobs requiring less than 100ms of CPU time and multiplying it by the probability of the fifth job requiring more than 100ms of CPU time.

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a) We have f−1(7) = 2.Thus, the value of f-1(7) is 2.

b) We can conclude that f( f−1(−3) ) = f(5) = −3.Thus, the value of f(5) is -3.

(a) Determine f-1(7)Given that f be a one-to-one function and f(2)=7.Since f is one-to-one, there exists a unique inverse function f−1. We have f(2) = 7, hence 2 = f−1(7). Therefore, we have f−1(7) = 2.Thus, the value of f-1(7) is 2.(b) Determine f(5)Given that f be a one-to-one function and f−1(−3) = 5.Since f is one-to-one, there exists a unique inverse function f−1. Hence, f( f−1(x) ) = x and f−1( f(x) ) = x for all x in the domain of f. Also, f(2) = 7, thus f−1(7) = 2. Therefore, we can conclude that f( f−1(−3) ) = f(5) = −3.Thus, the value of f(5) is -3.

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From the given data, the test statistic is -2.052 and the p-value is 0.0461. The correct answer is option 5.

To perform a two independent samples t-test, we can use the following formula to calculate the test statistic:

t = (x₁ - x₂) / (s_p × √(1/n₁ + 1/n₂))

where x₁ and x₂ are the sample means, n₁ and n₂ are the sample sizes, s_p is the pooled standard deviation, calculated as:

s_p = √(((n₁ - 1) × s₁² + (n₂ - 1) × s₂²) / (n₁ + n₁ - 2))

Let's calculate the test statistic:

x₁ = 60.345, s₁ = 10.8968, n₁ = 25

x₂ = 67.635, s₂ = 12.936, n₂ = 20

s_p = √(((25 - 1) × 10.8968² + (20 - 1) × 12.936²) / (25 + 20 - 2)) = 11.8074

t = (60.345 - 67.635) / (11.8074 × √(1/25 + 1/20)) = -2.052

The degrees of freedom for the t-distribution can be calculated as:

df = n₁ + n₂ - 2 = 43

Using a two-tailed t-test at a significance level of 0.05, the critical t-value is ±2.016.

The p-value for the test is the probability of obtaining a t-value as extreme or more extreme than the calculated t-value, assuming the null hypothesis is true. Since the calculated t-value is outside the critical region (|t| > 2.016), the p-value is less than 0.05 and we can reject the null hypothesis in favor of the alternative hypothesis.

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Answer:

124= 100

2,311= 2,300

48= 0

Step-by-step explanation:

In response to the query, we can state that If you can't afford a whole equation cupcake, you should purchase: - 8

An equation is a mathematical statement that proves the equality of two expressions connected by an equal sign '='. For instance, 2x – 5 = 13. Expressions include 2x-5 and 13. '=' is the character that links the two expressions. A mathematical formula that has two algebraic expressions on either side of an equal sign (=) is known as an equation. It depicts the equivalency relationship between the left and right formulas. L.H.S. = R.H.S. (left side = right side) in any formula.

For the family, 9 halves

six halves for my pals

So overall:

- For the two of them, 15 halves.

It means that you need 712 cupcakes in total.

If you can only afford a half-cupcake, you'll need to buy: 712

If you can't afford a whole cupcake, you should purchase:

- 8

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Answer:

Step-by-step explanation

ayo so basically this is a pythagorus theorum question

the formula is

c²= a² + b²

where c is the hypotenuse (the longest line , opposite of the right angle aka here 13ft !!)

a and b ,  where a  is the down line as a (4ft ) and b the unknown one

(just remember and lookout for the hypotenuse!)

so now put the numbers in formula

(13)²= (4)² +(b)²

169= 16 +(b)²

169-16=(b)²

153= (b)²

(put b first )

(b)² = 153

√(b)²= √153

(the square gets cut with the square root)

b= 12.36931688

b+12.4

The category which has the lowest marginal frequency is the marginal frequency of middle school students who chose to play sports.

What is meant by marginal frequency?

By dividing the sum or total of a row or the sum or total of a column by the total number of observations in a dataset, one can get the marginal relative frequency of a data set. This dataset is presented as a two-way table for ease of understanding. Although the percentage value is typically chosen, the marginal relative frequency can be stated as either a decimal or a percentage number.

Here,

The total number of middle school students = 21

Number of middle school students playing sports = 21 - 16 = 5

Number of high school students watching movies = 19-16 = 3

Total number of high school students = 11 + 3 = 14

Total number of students = 14 + 21 = 35

Now,

The marginal frequency of middle school students who chose to play sports = 5 / 35 = 0.143

The marginal frequency of high school students who decided to watch movies/TV = 3/35 = 0.0857

The marginal frequency of students in high school = 14/35 =0.4

The marginal frequency of students who chose to play sports = 15/35

                                                                                                     = 0.429

Therefore the category which has the lowest marginal frequency is the marginal frequency of middle school students who chose to play sports.

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