prove if one pair of opposite sides of a quadrilateral is both congruent and parallel, then it is a parallelogram

Answer:

D) Kite

Step-by-step explanation:

A kite is a 4 sides figure that a pair of adjacent sides have the same length.

Helping in the name of Jesus.

Answer:

D) kite.

Step-by-step explanation:

Refer to the picture, when you combine the quadrilateral, it's more precise to make a kite.

The answer on Probability to draw probability tree and calculate the final solution the answers are (a) the tree is given below , (b) i) P(R1 ∩ W2) means the probability of drawing a red marble on the first draw and a white marble on the second draw , ii) The solution is P(R1) * P(W2|R1) = (4/9) * (5/8) = 5/18. (C) 17/36. (d) the tree is given below.

In probability theory,  experiment is  process or  situation that produces  set of possible outcomes or events, each with  associated probability of occurrence.

In  experiment, the set of all possible outcomes is called  sample space, denoted by  symbol Ω. The outcomes in  sample space can be either discrete, meaning they are countable and separate, or continuous, meaning they are uncountable and form range or interval.

a) Probability tree:

       P(W1) = 5/9

         /              \

      P(W2|W1)         P(R2|W1) = 4/9

      /      \          /      \

  P(W3|W1W2)  P(R3|W1W2) P(W3|R1W2)  P(R3|R1W2)

  /   \       /   \       /    \        /    \

P(W4|W1W2W3) P(R4|W1W2R3) P(W4|R1W2W3) P(R4|R1W2R3)

b)

i) P(R1 ∩ W2) means the probability of drawing a red marble on the first draw and a white marble on the second draw.

ii) The solution is P(R1) * P(W2|R1) = (4/9) * (5/8) = 5/18.

c)

i) There are two ways to get at least one red ball: drawing a red ball on the first draw or drawing a white ball on the first draw and a red ball on the second draw.

ii) Angela is not correct. To calculate the probability of drawing at least one red ball, we need to add the probabilities of the two ways to get at least one red ball:

P(at least one red ball) = P(R1) + P(W1) * P(R2|W1) = (4/9) + (5/9) * (4/8) = 17/36.

d) If the first ball is replaced before the second draw, then the probability tree would have the same probabilities for each draw. The new probability tree would be:

         P(W1) = 5/9

         /              \

      P(W2)             P(R2) = 4/9

      /      \          /      \

  P(W3)      P(R3)     P(W3)     P(R3)

  /   \       /   \    /    \     /    \

P(W4) P(R4)  P(W4) P(R4) P(W4)  P(R4)

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Answer:

To find the Z-score that has 48.4% of the distribution's area to its left, we can use a standard normal distribution table or a calculator.

Using a standard normal distribution table, we can look for the closest probability value to 0.484. In the table, we find that the closest probability value is 0.4838, which corresponds to a Z-score of approximately 1.96.

Alternatively, we can use a calculator with a built-in normal distribution function. Using the inverse normal distribution function, also known as the quantile function, we can find the Z-score that corresponds to a given probability. For a probability of 0.484, we get:

To find the Z-score that has 48.4% of the distribution's area to its left, we can use a standard normal distribution table or a calculator.

Using a standard normal distribution table, we can look for the closest probability value to 0.484. In the table, we find that the closest probability value is 0.4838, which corresponds to a Z-score of approximately 1.96.

Alternatively, we can use a calculator with a built-in normal distribution function. Using the inverse normal distribution function, also known as the quantile function, we can find the Z-score that corresponds to a given probability. For a probability of 0.484, we get:

To find the Z-score that has 48.4% of the distribution's area to its left, we can use a standard normal distribution table or a calculator.

Using a standard normal distribution table, we can look for the closest probability value to 0.484. In the table, we find that the closest probability value is 0.4838, which corresponds to a Z-score of approximately 1.96.

Alternatively, we can use a calculator with a built-in normal distribution function. Using the inverse normal distribution function, also known as the quantile function, we can find the Z-score that corresponds to a given probability. For a probability of 0.484, we get:

invNorm(0.484)= 1.96

Therefore, the Z-score that has 48.4% of the distribution's area to its left is approximately 1.96.

Answer:

Step-by-step explanation:

|x-a|=b

x-a=±b

x=a±b

|x-2|=6

x-2=±6

either x-2=6

x=2+6=8

or

x-2=-6

x=2-6

x=-4

d

Answer:

Angle AIC is vertical.

Step-by-step explanation:

Defn of vertical angles

Answer:

To find the Taylor series of a function f(x) about a point a, we can use the following formula:

f(x) = f(a) + f'(a)(x-a)/1! + f''(a)(x-a)^2/2! + f'''(a)(x-a)^3/3! + ...

where f'(a), f''(a), f'''(a), ... denote the first, second, third, ... derivatives of f evaluated at a.

In this case, we have:

f(x) = 1 + 3e^(x+1)

To find the Taylor series about x=0, we need to evaluate the function and its derivatives at x=0.

f(0) = 1 + 3e^(0+1) = 1 + 3e

f'(x) = 3e^(x+1)

f'(0) = 3e^(0+1) = 3e

f''(x) = 3e^(x+1)

f''(0) = 3e^(0+1) = 3e

f'''(x) = 3e^(x+1)

f'''(0) = 3e^(0+1) = 3e

and so on.

Substituting these values into the formula for the Taylor series, we get:

f(x) = f(0) + f'(0)x + f''(0)x^2/2! + f'''(0)x^3/3! + ...

= (1 + 3e) + 3ex + 3ex^2/2! + 3ex^3/3! + ...

= 1 + (3 + 3e)x + (3/2)e x^2 + (1/2)e x^3 + ...

Therefore, the Taylor series for 1+3e^x+1 about x=0 is:

1 + (3 + 3e)x + (3/2)e x^2 + (1/2)e x^3 + ...

The integral of the function expressed as sum of partial frictions is -3/8 ln|x| + 7/8 ln|x + 2| - 1/8 ln|x - 2| + C.

First, factor out 2x from the denominator to obtain:

∫[(x + 3)/(2x³ - 8x)] dx = ∫[(x + 3)/(2x)(x² - 4)] dx

Next, we use partial fractions to express the integrand as a sum of simpler fractions. To do this, we need to factor the denominator of the integrand:

2x(x² - 4) = 2x(x + 2)(x - 2)

Therefore, we can write:

(x + 3)/(2x)(x² - 4) = A/(2x) + B/(x + 2) + C/(x - 2)

Multiplying both sides by the denominator, we get:

x + 3 = A(x + 2)(x - 2) + B(2x)(x - 2) + C(2x)(x + 2)

Now, we need to find the values of A, B, and C. We can do this by equating coefficients of like terms:

x = A(x² - 4) + B(2x² - 4x) + C(2x² + 4x)

x = (A + 2B + 2C)x² + (-4A - 4B + 4C)x - 4A

Equating coefficients of x², x, and the constant term, respectively, we get:

A + 2B + 2C = 0

-4A - 4B + 4C = 1

-4A = 3

Solving for A, B, and C, we find:

A = -3/4

B = 7/16

C = -1/16

Therefore, the partial fraction decomposition is:

(x + 3)/(2x)(x² - 4) = -3/(4(2x)) + 7/(16(x + 2)) - 1/(16(x - 2))

The integral becomes:

∫[(x + 3)/(2x³ - 8x)] dx = ∫[-3/(8x) + 7/(8(x + 2)) - 1/(8(x - 2))] dx

Integrating each term separately gives:

∫[-3/(8x) + 7/(8(x + 2)) - 1/(8(x - 2))] dx

= -3/8 ln|x| + 7/8 ln|x + 2| - 1/8 ln|x - 2| + C

where;

Therefore, the final answer is:

∫[(x + 3)/(2x³ - 8x)] dx = -3/8 ln|x| + 7/8 ln|x + 2| - 1/8 ln|x - 2| + C

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The fraction Bret needs to turn the logo is 1 / 2.

Bret needs to put a logo on a business card.  He prints the logo the wrong way up by mistake. Bret needs to turn the logo the correct way up.

Therefore, the fraction he needs to turn the logo can be represented as follows:

For a complete turning, it will be 360 degrees. according to the diagram he has already turned the logo 180 degrees.

Therefore, for Bret to turn the logo correctly, he needs to turn it 180 degrees.

Hence, the fraction he needs to turn the logo is as follows:

180 / 360 = 18  /36 = 1 / 2

Hence, Bret needs to turn the logo half way(1 / 2)up.

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Step-by-step explanation:

1. 2/10

2.3/15

3.4/20

4. 5/25

5.6/30

6.7/35

By answering the presented question, we may conclude that Since n expression must be a whole number, the closest integer to 3.32193 is 3. Therefore, there are 3 terms in the series.

An expression in mathematics is a collection of representations, numbers, and conglomerates that mimic a statistical correlation or regularity. A real number, a mutable, or a mix of the two can be used as an expression. Mathematical operators include addition, subtraction, fast spread, division, and exponentiation. Expressions are often used in arithmetic, mathematic, and form. They are used in the representation of mathematical formulas, the solution of equations, and the simplification of mathematical relationships.

We can use the formula for the sum of a finite geometric series to solve this problem:

[tex]S_n = a1(1 - r^n)/(1 - r)\\S_n = 8,190, r = 1/2, and a1 = 4,096. \\8,190 = 4,096(1 - (1/2)^n)/(1 - 1/2)\\16,380 = 4,096(1 - (1/2)^n)\\4 = 1 - (1/2)^n\\5/4 = (1/2)^n\\n = log(5/4) / log(1/2)\\n= 3.32193\\[/tex]

Since n must be a whole number, the closest integer to 3.32193 is 3. Therefore, there are 3 terms in the series.

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Answer:

95.07[tex]m^{2}[/tex]

Step-by-step explanation:

You need to work out the area of a cicle, since the goat can only move 5.5m round

Area of a cicle = π r²

π = 22/7

r=5.5m

[tex]\frac{22}{7}[/tex] x [tex]5.5^{2}[/tex] = 95.07142857 = 95.07[tex]m^{2}[/tex] (to 2d.p)

Answer:

94.79 square meters.

Step-by-step explanation:

Assuming the goat is tied to the peg in the ground, the area that the goat can graze on can be represented by a circle with radius equal to the length of the rope.

Given that the length of the rope is 5.5 meters, the radius of the circle can be calculated as:

r = length of rope = 5.5 meters

The area of a circle is given by the formula:

A = πr²

where π (pi) is approximately equal to 22/7 or 3.14.

So, substituting the value of r, we get:

A = π × (5.5)²

= 3.14 × (5.5)²

= 3.14 × 30.25

= 94.79 square meters (approx.)

Therefore, the area of grass that the goat can eat is approximately 94.79 square meters.

Answer:

All three answers are correct, but they represent different algebraic expressions that are equivalent to x + 8.

Step-by-step explanation:

i) 1/4(x + 8) is equivalent to x/4 + 2. This expression distributes the 1/4 coefficient to both terms inside the parentheses.

ii) x + 2 is equivalent to 1x + 2. This expression simplifies x + 8 by subtracting 6 from the constant term.

iii) 1/4x + 2 is equivalent to 2 + 1/4x. This expression rearranges the terms in x + 8 to separate x from the constant term.

Therefore, the students who provided any of these answers demonstrated a correct understanding of algebraic expressions.

The three positive numbers 72, 30, and 12 make up the total of 114.An object that can be counted, measured, or given a name is a number. The numbers, for instance, are 1, 2, 56, etc.

Suppose the three positive numbers are x, y and z.

If the summation of numbers is 114.

⇒ x + y + z = 114 --- (1)

⇒ z = 114 - x - y

Suppose the square sum of the number be S.

∴ S = x² + y² + z²

⇒ S = x²+ y² + (114 - x - y) ² --- (2)

To obtain the minimal value of S, we will optimize the function by partly differentiating it with respect to x and y and setting ds/dx = 0.

2x + 2(114- x - y) (-1) = 0

2x - 228 + 2x + 2y = 0

4x + 2y - 228 = 0

y = 114 - 2x --- (3)

Differentiate partially with respect to y as

2y + 2(114 - x - y) (-1) = 0

2y - 228 + 2x + 2y = 0

4y + 2x - 228 = 0

x = 228 - 2y --- (4)

Substitute the value of y = 114 - 2x in the equation (4),

x = 12 - 2(114 - 2x)

x = 12 - 228 + 4x

4x - x = 228 - 12

3x = 216

⇒ x = 72

By substituting x = 72 in equation (3)

y =2(72) - 114

y = 144 - 114

⇒ y = 30

Substitute the values of x and y in equation (1),

72 + (30) + z = 114

z = -72+114-30

z= 12

Thus, the three positive numbers whose sum is 114 will be 72, 30, and 12.

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As per have proved that the metric space (x,d) has the property that every closed and bounded subset of x is compact.

First, let us define a sequence of positive real numbers εₙ as follows: εₙ = 1/2ⁿ. Since εₙ → 0 as n → ∞, we have that for each n ∈ ℕ, there exists an Nₙ ∈ ℕ such that if n, a > Nₙ, then d(xₙ, xₐ) < εₙ.

To see that A is bounded, note that for any two elements xₙ, x_{Nₙ} in A, we have d(xₙ, x_{Nₙ}) ≤ d(xₙ, x_{Nₙ-1}) + d(x_{Nₙ-1}, x_{Nₙ}) ≤ εₙ + ε_{Nₙ} ≤ 2εₙ. Therefore, the diameter of A is bounded by 2εₙ for any n ∈ ℕ. Since εₙ → 0 as n → ∞, we have that A is bounded.

To see that A is closed, let us consider a point x in the closure of A. If x is not in A, then there exists a positive real number δ such that the open ball B(x, δ) does not intersect A.

Let N be such that 1/2ⁿ < δ/2, and let y be an element in A. If y is equal to x_{Nₙ} for some n ∈ ℕ, then d(x, y) ≥ δ/2 > ε_{Nₙ}. Otherwise, y is equal to xₐ for some a ∈ ℕ.

If a > N, then d(x, y) > εₙ > δ/2. If a ≤ N, then d(y, xₙ) ≤ d(y, xₐ) + d(xₐ, xₙ) ≤ εₐ + εₙ < δ/2 + δ/2 = δ, which contradicts the assumption that B(x, δ) does not intersect A. Therefore, we must have x ∈ A, and so A is closed.

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So, in this case, the length of each of the equal sides is: 17 / [tex]\sqrt{2}[/tex] ≈ 12.02

An isosceles triangle is a triangle in which two sides have the same length. This means that two of the three angles in the triangle are also equal in measure. The side that is not congruent to the other two sides is called the base of the triangle, and the angles opposite the congruent sides are called the base angles. In an isosceles triangle, the base angles are always equal in measure.

Isosceles triangles are a common shape in geometry and can be found in many real-world applications. They have special properties that make them useful in various fields of mathematics, such as trigonometry and geometry. For example, the base angles of an isosceles triangle are always equal, so if you know the measure of one of the base angles, you can determine the measure of the other base angle using the fact that the sum of the angles in a triangle is 180 degrees.

given by the question.

In an isosceles triangle with two equal angles of 45 degrees and a third angle of 90 degrees, the two equal sides are opposite the 45 degree angles, and the third side is opposite the 90 degree angle. Let's call the length of the missing side "x".

Using the Pythagorean theorem, we know that in a right triangle with legs of equal length (which is the case for the two 45-degree angles), the length of the hypotenuse is. [tex]\sqrt{2}[/tex] times the length of the legs.

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Answer:

g h hh h

Step-by-step explanation:

Answer: 1704 square inches

Step-by-step explanation:

The surface area of a square pyramid is given by the formula:

Surface Area = base area + 4 × (1/2 × slant height × base length)

The base area of the pyramid is:

base area = length × width = 24 in × 24 in = 576 in²

The slant height of the pyramid can be found using the Pythagorean theorem:

slant height = sqrt(20² + 12²) = 236/5 in

Therefore, the surface area of the whole pyramid is:

Surface Area = 576 in² + 4 × (1/2 × 236/5 in × 24 in) = 1152 in² + 2256 in² = 3408 in²

Half of this area is black, so the area that is yellow is:

Yellow Area = 1/2 × 3408 in² = 1704 in²

Therefore, the surface area of the toy that is yellow is 1704 square inches.

In the graph, Student B and C are both 10 years old and student C has a shoe size of 5. The coordinates of D are (12,6)

In graph theory, a graph is a framework that consists of a collection of objects, some of which are paired together to form "related" objects. The objects are represented by mathematical abstractions known as vertices (also known as nodes or points), and each set of connected vertices is known as an edge (also called link or line). A graph is typically shown diagrammatically as a collection of dots or circles representing the centres and lines or curves representing the edges.

Both directed and undirected lines are possible. For instance, if the edges between two individuals are handshakes, then the graph is undirected because any individual A can only shake hands with an individual B if B also holds hands with A. The graph is directed, however, if an edge from person A to person B indicates that A owes money to B because borrowing money is not always returned.

In the given graph,

Student B and C are both 10 years old and student C has a shoe size of 5.

The coordinates of D are (12,6)

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Answer:

  C. RP = 4.5

Step-by-step explanation:

You want to know what condition is sufficient to show ∆ABC ~ ∆QPR, given  three sides and 2 angles in ∆ABC, and 2 sides in ∆QPR.

Similarity can be shown if all three sides are proportional, or if two angles are congruent.

The offered answer choices only list one angle, so none of those will work. The answer choice that makes the third side of ∆QPR be in the same proportion as the corresponding side of ∆ABC is the condition of interest.

  C. RP = 4.5

__

Additional comment

The side ratios in the two triangles are ...

  AB : BC : CA = 10 : 9 : 6

  QP : PR : RQ = 5 : PR : 3

For these ratios to be the same, PR must be half of BC, just as the other segments in ∆QPR are half their counterparts in ∆ABC.

Hey!
A: 50% Of people = 150 people prefer oranges.

B: 10% Of people = 15 people prefer pineapple.

C: 15% Of people = 20 people prefer blueberries.

D: 5% Of people = 5 people prefer apples.

E: 20% Of people = 22 people prefer strawberries

The volume of the square pyramid is 9.12 m.

A square pyramid is a pyramid, in geοmetry, that has a square base and fοur lateral faces. A Pyramid is a pοlyhedrοn that has a base and 3 οr greater triangular faces that meet at a pοint abοve the base (the apex). A square pyramid is a three-dimensiοnal shape that has a tοtal οf five faces, hence called a pentahedrοn.  A mοst famοus example οf such a pyramid in real life is the Great Pyramid οf Giza.

[tex]$ \rm V = \frac{1}{3} a^2H[/tex]

Where v is the volume

a is the base side and

H is the height

Here,

a = 12 cm

H = 19 cm

Then,

[tex]$ \rm V = \frac{1}{3} 12 \times 12 \times 19[/tex]

[tex]$ \rm V = 4 \times 12 \times 19[/tex]

V = 912 cm or 9.12  m

Thus, The volume of the square pyramid is 9.12 m.

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Answer:

d

Step-by-step explanation:

the theoretical probability that the coin lands on the same side every time is 0.0625.

What is Probability?

The area of mathematics known as probability is concerned with how random events turn out. The definition of probability is chance or potential for a result. It clarifies the likelihood of a specific occurrence. We regularly use words like - 'It will probably rain today, 'he will probably pass the test', 'there is very less possibility of receiving a storm tonight', and 'most certainly the price of onion will go high again. In essence, probability is the forecasting of an outcome that is either based on the analysis of past data or the variety and quantity of alternative outcomes.

The theoretical probability of getting the same side every time in five coin tosses is:

Since the coin has two sides, there are 2^5 = 32 possible outcomes in total. Out of these outcomes, there are only two ways to get the same side every time (either all heads or all tails). Therefore, the probability of getting the same side every time is:

P(E) = favorable outcomes / total outcomes

     =  2/32

     = 1/16 = 0.0625 or 6.25%

So, the theoretical probability of getting the same side every time in five coin tosses is 0.0625 or 6.25%.

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Answer:

efrtrreeeeed

ggggffffff

Step-by-step explanation:

ggffffddeeeereeeer hhhhfdvjuhhhhhhhhjjjhhhhhhgfxd you and your family are doing well and your family are doing well and your dad said he had a good night with you don't have stich clock I WINNNNNN have stich clock out of it and your mom are the best ones that have stich you and Darshanie is a good night with my mom and my mom are the only ones who have a good weekend too and your dad said you and I WINNNNNN you and I will get it you and your family have a good day I love your family and your mom are doing well too and my mom I WINNNNNN and your dad said for you guys to come back to work tomorrow and your family are doing well and your family are doing well and your family are doing well and your family are

The correct explanation of the confidence interval for the regression slope is: "The average Tip is expected to increase by between $0.080 and $0.174 for every dollar increase in Sale amount." The correct option is A).

The question refers to a scatterplot and regression analysis of data on tips and sale amounts.

In particular, the model's multiple R, R square, and adjusted R square indicate the proportion of variability in the dependent variable (tips) that can be explained by the independent variable (sale amounts). The standard error reflects the precision of the model's predictions.

The confidence interval for the slope provides a range of values within which we can be confident that the true population slope lies. In this case, we can say with 95% confidence that the average tip is expected to increase by between $0.080 and $0.174 for every dollar increase in sale amount. The correct answer is A).

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_____The given question is incomplete, the compelete question is given below:

SLRI SONNY'S SCATTERPLOT TIP ($) 0 100 200 300 400 900 1000 1100 1200 500 600 700 800 SALE AMOUNT (S) © 2020 Radha Bese Florida State University Department of States SUMMARY OUTPUT SONNY'S Regression Statistics Multiple R 0.58064672 R Square 0.337150613 Adjusted R Square 0.325722175 Standard Error 28.73607083 Observations 60 ANOVA MS df 1 F Significance F 29.50102381 1.15405E-06 Regression Residual Total SS 24360.81754 47894.18246 72255 24360.81754 825.7617666 Intercept Sale Amount Coefficients Standard Error Stat 56.95659334 12.27319518 4.640730674 0.126993685 0.023381027 5.431484494 P-value 2.02919E-05 1.15405E-06 Lower 95% 32.38912416 0.080191475 Upper 95% 81.52406252 0.173795894 Which of the following is a correct explanation of the confidence interval for the regression slope? Choose the BEST option.

A The average Tip is expected to increase by between $0.080 and $0.174 for every dollar increase in Sale amount.

B The average Sale amount is expected to increase by between $32.389 and $81.525 for every dollar increase in Tip.

C The average Tip is expected to increase by between $32.389 and $81.525 for every dollar increase in Sale amount.

D The average Sale amount is expected to decrease by between $0.080 and $0.174 for every dollar increase in Tip.

E The Tip is expected to increase by between $32.389 and $81.525 for every dollar increase in Sale amount.

F The Tip is expected to decrease by between $0.080 and $0.174 for every dollar increase in Sale amount

Answer: To solve this problem, we can use the formula:

Total = Stocks + Bonds - Both

where "Total" represents the total number of people who invested in either stocks or bonds.

Plugging in the given values, we get:

Total = 700 + 400 - 300

Total = 800

Therefore, 800 people invested in stocks or bonds.

Step-by-step explanation:

Answer:

2.

a) log base 10 of 100

b) The expression means that 10 to the 2nd power equals 100.

c) 2

3.

4. It would make sense that the value is between 1 and 2 because 10 to the 1st power is 10, and 10 to the 2nd power is 100. 50 is between 10 and 100 so the value would have to be between 1 and 2. This works because logs are the inverse function to exponentiation.

a) 2.6021

b) 3 and the value is exact because the base 10 in the log expression is technically the exponent when you convert it to exponent form. This works because logs are the inverse function to exponentiation. So 10 to the 3rd power would give you exactly 1000.

Answer:

Genevieve should use a three digit code instead of a two digit code for her locker combination because a three digit code has more possible combinations than a two digit code, which makes it more secure.

With a two digit code, there are only 100 possible combinations (10 possible digits for the first number and 10 possible digits for the second number). On the other hand, with a three digit code, there are 1,000 possible combinations (10 possible digits for each of the three numbers). This means that it would take a potential thief 10 times longer to guess the correct combination for a three digit code compared to a two digit code, assuming they are using a brute force method of trying all possible combinations.

Therefore, using a three digit code increases the security of the locker and decreases the likelihood of someone gaining unauthorized access.

Answer:

more security.

Step-by-step explanation:

If you have a 2 digit code people will find it. but with 3, it makes it harder to find so people can't open her locker.

The area of the outdoor carpet is 63 square foot.

What does a math area mean?

The amount of space occupied by a flat (2-D) surface or an object's shape is known as its area. An object's area is the space that its boundary encloses. The quantity of unit squares that completely encircle the surface of a closed figure is its area.

The dimensions of the outdoor carpet which is rectangle in shape are:

L=6 ft and w=12 ft.

The dimensions of the indoor carpet that is triangle in shape are:

b=3 ft and h=9 ft.

Now, area of the outdoor= Area of the green region-Area of triangular region

 Area = l * b - 1/2 * b * h

         = 6* 12 - 1/2 * 3 * 6

         = 72 - 9

         = 63 square foot

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The complete question is -

How many square feet of outdoor carpet will we need for this hole? 72 ft 9 ft 3 ft 6 ft 6 ft 12 ft

(a) There are 100,000 different ways for Fiona to select her lunches for the week.

(b) There are 200,000 different ways for Fiona to select her lunches and drinks for the week.

(a) Since Fiona selects one lunch special each day, there are 10 options for Monday, 10 options for Tuesday, and so on, for a total of 10 options for each of the 5 weekdays. Therefore, the total number of ways for Fiona to select her lunches for the week is:

10 × 10 × 10 × 10 × 10 = 10^5 = 100,000

(b) In addition to the 10 lunch specials, Fiona now has 2 options for her drink, either water or tea. So for each of the 100,000 possible lunch selections from part (a), there are 2 possible drink options. Therefore, the total number of ways for Fiona to select her lunches and drinks for the week is:

100,000 × 2 = 200,000

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Answer: We can first find the dot product of vec r with hat j and hat k:

vec r * hat j = (3 hat i - 2 hat j + 6 hat k) * (- hat j) = -2

vec r * hat k = (3 hat i - 2 hat j + 6 hat k) * hat k = 6

Substituting these values into the expression given, we get:

(vec r * hat j).(vec r * hat k) - 12 = (-2) * (6) - 12 = -24

Therefore, the value of (vec r * hat j).(vec r * hat k) - 12 is -24.

Step-by-step explanation: