Mrs. Beck buys 48 pieces of house siding. Each piece is 3.7 meters long. Which equation represents the best estimate for the total length of siding Mrs. Beck buys? A. 40 × 3 = 120 meters B. 40 × 4 = 160 meters C. 50 × 4 = 200 meters D. 50 × 5 = 250 meters

Answer: Find the the height and length of the triangle. I'm not sure what it would be but then use a1  + a2 to find the area

Answer:

Formula of triangle: A = 1/2 x b x h

Step-by-step explanation:

Solve the base of the triangle by solving the distance between points (-2,0) and (f, -5) in units, and then do the same for height: find distance between points (-2, 6) and (-2, 0). Once you find the distance, input value of base and height into the formula and solve to get the area!

Answer:

The answer is 6 to the power of 8

hi alondra its me Andrew Moreno. I also used brainly on the final.

I'm sorry, but I can't provide specific answers to math quizzes from a specific curriculum or platform like iReady. However, I can certainly help you understand concepts related to numbers and operations and provide explanations for specific problems you might have. Just let me know what specific topic or problem you need help with, and I'll be glad to assist you!

Certainly! Numbers and operations encompass a wide range of mathematical concepts and skills. It includes topics such as arithmetic operations (addition, subtraction, multiplication, and division), number patterns, place value, fractions, decimals, and more.

To become "smarter than an astrophysicist" in the context of numbers and operations, one would need to have a solid understanding of these concepts and the ability to apply them in various problem-solving situations. This would involve being able to perform operations accurately, understand numerical relationships, analyze patterns, and make connections between different representations of numbers (such as fractions and decimals).

Mastering numbers and operations requires practice, critical thinking, and a deep understanding of fundamental mathematical principles. By honing these skills, you can develop the ability to solve complex mathematical problems and make informed decisions based on numerical data.

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Answer:

1. Mean: 18 Range: 143

Step-by-step explanation:

So I can't do all these problems for you but I'll do the first one.

So basically to find the mean add all of the numbers together and divide by the number of numbers.

For example, if the numbers were 1, 2, 3, 4 you would do:

1 + 2 + 3 + 4 = 10

divide by the number of numbers (4 numbers):

10 / 4 = 2.5

so the mean of that example set is 2.5

The range of a set of numbers is the difference between the least and greatest:

From the example before, the set 1, 2, 3, 4 would have a range of 4 - 1 = 3.

For question 1, you start by adding all the numbers:

you get 162.

Then, divide by 9 because there are 9 numbers:

162/9 = 18

Range: the least number is -76 and the greatest number is 67, so the range is:

67 - (-76) = 143

The length and width of the patio will be 20 feet and 10 feet, respectively.

Assume L is the length and W is the width. Then the area is given as,

A = L × W

And the perimeter is given as,

P = 2(L + W)

Butchy is pouring cement for another deck. the border of the deck is 60 ft. also, the region is 200 sq. ft. Then the equation is given as,

2(L + W) = 60

L + W = 30         ...1

L × W = 200       ...2

From equations 1 and 2, then we have

L x (30 - L) = 200

L² - 30L + 200 = 0

L² - 20L - 10L + 200 = 0

(L - 20)(L - 10) = 0

L = 10, 20

Then the value of W will be

At L = 10,

W = 30 - 10

W = 20 feet

At L = 20

W = 30 - 20

W = 10 feet

The length and width of the patio will be 20 feet and 10 feet, respectively.

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To find the area of the region interior to r = 9 + 7sin(θ) below the polar axis, we can integrate the function from the lower bound of θ to the upper bound of θ and take the absolute value of the integral.

To find the area of the region formed by two petals of r = 8sin(3θ), we can integrate the function over the appropriate range of θ and take the absolute value of the integral. To find dy/dx for the given parametric equations x = t^(1/3) and y = 3 - t, we differentiate y with respect to t and x with respect to t and then divide dy/dt by dx/dt.

To find the area of the region interior to r = 9 + 7sin(θ) below the polar axis, we need to evaluate the integral ∫[lower bound to upper bound] |1/2 * r^2 * dθ|. In this case, the lower bound and upper bound of θ will depend on the range of values where the function is below the polar axis. By integrating the expression, we can find the area of the region. To find the area of the region formed by two petals of r = 8sin(3θ), we need to evaluate the integral ∫[lower bound to upper bound] |1/2 * r^2 * dθ|.

The lower bound and upper bound of θ will depend on the range of values where the function forms the desired shape. By integrating the expression, we can calculate the area of the region. To find dy/dx for the parametric equations x = t^(1/3) and y = 3 - t, we differentiate both equations with respect to t. Taking the derivative of y with respect to t gives dy/dt = -1, and differentiating x with respect to t gives dx/dt = (1/3) * t^(-2/3). Finally, we can find dy/dx by dividing dy/dt by dx/dt, resulting in dy/dx = -3 * t^(2/3).

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p=FG+FH+HG =5.8+5.8+6 is a numerical expression to represent the approximate perimeter of triangle FGH.

The perimeter of a geometric figure is the sum of its sides.

The question  gives:

Therefore the perimeter will be the sum of 5.8, 5.8 and 6. You can write as:

                                         p=FG+FH+HG

                                         p= 11.6+6=17.6

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Answer:

Divide 223 by 2: 223/2 = 111.5

Then fix one number to 111.5 - 0.5 ann the other to 111.5 + 0.5

The two numbers are 111 and 112.

Then the answer is 112.  

Step-by-step explanation:

The corresponding z-score for X = 20, given that X, is normally distributed with a mean of 0 and standard deviation of 10, is 2.

The z-score represents the number of standard deviations an observation is from the mean of a normal distribution. It is calculated using the formula:

z = (X - μ) / σ,

where X is the observed value, μ is the mean, and σ is the standard deviation.

In this case, X = 20, μ = 0, and σ = 10. Plugging these values into the formula, we have:

z = (20 - 0) / 10 = 2.

Therefore, the corresponding z-score for X = 20 is 2. The z-score indicates that the observed value is two standard deviations above the mean of the distribution.

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I'm assuming the function is \(f(x)= 1.8(0.53)^x\).

The general form of an exponential function is \(f(x) = C\cdot a^x\).

C is the initial value, which is 1.8 in this case.  

a is the decay factor, which is 0.53 in this case.

The decay factor tells you what percent remains for each unit increase in x.  This decay factor tells you that 53% remains for each unit increase in x.  

Here's the catch: when you describe the decay *rate*, you need to describe what has been lost.  So if 53% remains, then 47% is lost for each unit increase in x.

The decay rate if 47% for each unit increase in x.

Exponential functions are calculated by what remains, but we always describe them based off of how much they've changed from 100%.  A 15% rate of decay gives you a decay factor of 0.85, since 85% remains.

Answer:

4739 CDs

Step-by-step explanation:

Given the function that models the rate at which the disc is sold expressed as;

R(t)=20,000e^−0.12t

t is the number of weeks since the CD was first released

We are to look for the number of CDs that are expected to be sold during the first 12 weeks after the release. To do this, you will simply substitute t = 12 into the modeled function and get R(12) as shown;

R(t)=20,000e^−0.12t

R(12)=20,000e^−0.12(12)

R(12)=20,000e^−1.44

R(12)=20,000(0.2369)

R(12) = 4738.56

Hence the total number of CDs expected to be sold to nearest thousand is 4739 CDs

Answer:

127,000

Step-by-step explanation:

you take the integral from 0 to 12 of R(t)

Percentage change = 10%

We can use the formula:

Percent change = \(\frac{New-Old}{Old}\) x 100

Percent change = \(\frac{77-70}{70}\)x100

Percent change = \(\frac{7}{70}\) x 100

Percent change = 0.1 x 100

Percent change = 10%

Answer: 53.9

Step-by-step explanation:

Step-by-step explanation:

the answer is in the above image

Answer:

61°

Step-by-step explanation:

(x+18)°=(4x-15)°alternate angles, because BC is parallel to AD

x°+18°=4x°-15°

18°+15°=4x°-x°

33°=3x°

33°/3°=3x°/3°

11=x

angle ABD

90°-(x+18)°. the sides of a rectangle meet at 90°

90°-(11+18)°

90°-(29)°

90°-29°

61°

The probability that from 2 to 5 of the 6 randomly selected Joe's customers order for delivery is 0.8429=  84.29%.

We apply  the binomial probability formula.

The binomial probability formula is given by:

P(x) = C(n, x) * \(p^x\) * \(q^(n-x)\)

Where:

P(x) i=  probability of getting exactly x successes,

n=  total number of trials

x =  number of desired successes,

p = probability of success on a single trial, and

q =  probability of failure on a single trial

We find  the probabilities for each value of x and add them all

P(2) = C(6, 2) * (0.11)² * \((0.89)^(^6^-^2^)\)  =  0.3074

P(3) = C(6, 3) * (0.11)^3 * \((0.89)^(^6^-^3^)\)  = 0.3195  

P(4) = C(6, 4) * (0.11)^4 *\((0.89)^(^6^-^4^)\)  = 0.1747

P(5) = C(6, 5) * (0.11)^5 * \((0.89)^(^6^-^5^)\)  =  0.0413

P(2 to 5) = P(2) + P(3) + P(4) + P(5)

≈ 0.3074 + 0.3195 + 0.1747 + 0.0413

= 0.8429 =  84.29%.

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Answer:David gets paid 9$ per Hr

Kevin also gets paid 9.20$

So Kevin gets paid more

Step-by-step explanation:

Hope this helps

Answer:

-8/21

Step-by-step explanation:

The width of the new rectangular field would be 0 meters, which means it would essentially be a line segment.

To find the length and width of another rectangular field that has the same perimeter but a larger area, we can use the following steps:

1. Calculate the perimeter of the given rectangular field:

  Perimeter = 2 * (Length + Width)

            = 2 * (120 meters + 80 meters)

            = 2 * 200 meters

            = 400 meters

2. Divide the perimeter by 2 to find the equal sides of the new rectangular field. Since the perimeter is divided equally into two sides, each side would be half of the perimeter length:

  Side length = Perimeter / 2

             = 400 meters / 2

             = 200 meters

3. Now, we have the side length of the new rectangular field. However, we need to determine the length and width that would yield a larger area. One way to achieve this is to make one side longer and the other side shorter.

4. Let's assume the length of the new rectangular field is 200 meters. Since both sides have the same length, the width can be calculated using the formula for the perimeter:

  Width = Perimeter / 2 - Length

        = 400 meters / 2 - 200 meters

        = 200 meters - 200 meters

        = 0 meters

5. Therefore, the width of the new rectangular field would be 0 meters, which means it would essentially be a line segment. However, note that the question asks for a rectangular field with a larger area. Since the width cannot be zero, we can conclude that it is not possible to have a rectangular field with the same perimeter but a larger area than the given field.

In summary, it is not possible to find another rectangular field with the same perimeter but a larger area than the rectangular field with dimensions 80 meters wide and 120 meters long.

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a) 26 × 0.02584 = 0.67384 ≈ 0.67

b) 15.3 ÷ 1.1 = 13.9090909... ≈ 13.9

c) 782.45 − 3.5328 = 778.9172 ≈ 779

d) 63.258 + 734.2 = 797.458 ≈ 800

a) To determine the result of 26 × 0.02584, multiply the numbers and round the answer to the appropriate number of significant figures. Since 26 has two significant figures and 0.02584 has four significant figures, the answer should have two significant figures. Multiplying the numbers gives 0.67384, which is rounded to 0.67.

b) To find the result of 15.3 ÷ 1.1, divide 15.3 by 1.1 and round the answer to the appropriate number of significant figures. Both 15.3 and 1.1 have three significant figures, so the answer should also have three significant figures. Dividing the numbers gives 13.9090909..., which is rounded to 13.9.

c) To calculate 782.45 − 3.5328, subtract the second number from the first and round the answer to the appropriate number of significant figures. Both 782.45 and 3.5328 have five significant figures, so the answer should also have five significant figures. Subtracting the numbers gives 778.9172, which is rounded to 779.

d) To find the sum of 63.258 and 734.2, add the numbers together and round the answer to the appropriate number of significant figures. Both 63.258 and 734.2 have four significant figures, so the answer should also have four significant figures. Adding the numbers gives 797.458, which is rounded to 800.

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The coefficient of a¹⁷b²³ in the expansion of (3a−7b)⁴⁰ is 5,727,000,416,289,510,400.

To find this coefficient, we will use the binomial theorem. According to the theorem, the coefficient of a¹⁷b²³ in the expansion of (3a−7b)⁴⁰ is given by the expression: C(40, 23) × (3a)¹⁷ × (−7b)²³, where C(40, 23) is the number of ways to choose 23 objects out of 40. This can be calculated using the formula: C(40, 23) = 40! / (23! × 17!)

Substituting the values, we get:

C(40, 23) = 40! / (23! × 17!)

= (40 × 39 × 38 × ... × 18 × 17!) / (23 × 22 × ... × 2 × 1)

= 5,717,078,887

Therefore, the coefficient of a¹⁷b²³ in the expansion of (3a−7b)⁴⁰ is:

5,717,078,887 × (3a)¹⁷ × (−7b)²³

= 5,727,000,416,289,510,400

Hence, the answer is 5,727,000,416,289,510,400.

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Answer:

36 degrees

18+18=36

Answer:

149 in sq

Step-by-step explanation:

split in to the 3 rectengles

top right 6x(9-6)=18

middle rec 6×(10+6)=96

bottom rec. 5x7=35

total 149

Answer:

area = 149 in.²

Answer:

C. 48 m

Step-by-step explanation:

The two vertical sides add up to be (8*2) m = 16m.

The two horizontal sides can be added up to (14*2) m = 28m.

(The top horizontal side can be found by pushing the line in the middle up to the level of the other two portions of the same side.)

Finally, add the leftover two sides (2*2) m = 4m.

16+28+4 = 48.

Hope this helped!

Answer:

C-48

Step-by-step explanation:

hi , you need to fill in the blanks and then add them all together

Answer:

I think is going to be c because we can see with the dot plot and according of the reading is going to be c

Answer:

C

Step-by-step explanation:

The mean for store 1 is 2.9 while the mean for store 2 is 2.0

first how much square feet o is the place that you are trying to fill up have

The position value, r(t) is equals to the (t³/6)k + 2j and velocity value, v(t) is equals to ( t²/2 )k + 4i , for a(t) = tk, v(0) = 4i, r(0) = 2j.

Acceleration is defined as the rate of change of the velocity of an object with respect to time. Accelerations are vector quanty.

a = dv/dt

We have the following informations are available,

Initial velocity, v(0) = 4i

Initial position, r(0) = 2j

Acceleration at any time "t",

a(t) = tk

we have to determine the value of v(t) and r(t).

As we know, a(t) = dv(t)/dt = tk

integrating the above equation ,

v(t) = ∫tk dt = ( t²/2 )k + c

at t = 0 , v(0) = 0 + c = 4i ( since, v(0) = 4i

=> c = 4i

So, v(t) = ( t²/2 )k + 4i

Also, velocity is calculated by derivative of postion (r) with respect to time.

=> v(t) = dr(t) /dt

=> r(t) = ∫ v(t) dt

=> r(t) = ∫ ( t²/2 )k dt

integrating value of the right hand side,

r(t) = ( t³/2×3 )k +d

= (t³/6)k + d

At t = 0, r(0) = (0/6)k + d

=> r(0) = d = 2j

so, r(t) = (t³/6)k + 2j

Hence, the required position and velocity are

(t³/6)k + 2j and ( t²/2 )k + 4i.

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Expansion : \((x+1)(x+9) = x(x+9) + 1(x+9) = x^{2} +9x + x + 9\)
Simplify : \(x^{2} +10x + 9\)

Answer:

\(\huge\boxed{ \bf\:x^{2} + 10x + 9}\)

Step-by-step explanation:

\((x + 1)(x+9)\)

Let's expand it at first.

\((x + 1)(x + 9)\\= x (x + 9) + 1 (x + 9)\\= x^{2} + 9x + x + 9\)

Now, simplify it.

\(x^{2} + x + x + 9\\= \boxed{ x^{2} + 10x + 9}\)

\(\rule{150pt}{2pt}\)

The probability of a randomly chosen bolt having a width between 941 and 959 mm is 0.6294, and the appropriate value for C such that a randomly chosen bolt has a width less than C with probability 0.8729 is 963.80 mm.

To calculate the probability of a bolt having a width between 941 and 959 mm, we need to standardize the values using the formula z = (x - μ) / σ, where x is the value we want to find the probability for, μ is the mean, and σ is the standard deviation. Thus, for the lower value of 941 mm, we get z = (941 - 951) / 10 = -1, and for the upper value of 959 mm, we get z = (959 - 951) / 10 = 0.8. Using a standard normal distribution table or a calculator, we can find the probabilities corresponding to these z-scores, which are 0.1587 and 0.7881, respectively. Therefore, the probability of a randomly chosen bolt having a width between 941 and 959 mm is the difference between these two probabilities, which is 0.6294, rounded to four decimal places.

To find the value of C such that a randomly chosen bolt has a width less than C with probability 0.8729, we need to use the inverse normal distribution function, also known as the z-score or percentile function. This function gives us the z-score corresponding to a given probability. Using a calculator or a table, we can find the z-score corresponding to a probability of 0.8729, which is 1.18, rounded to two decimal places.

To get the corresponding width, we use the formula x = μ + zσ, where μ and σ are the mean and standard deviation of the normal distribution, and z is the z-score we just found. Thus, C = 951 + 1.18 × 10 = 963.8 mm, rounded to two decimal places. Therefore, the appropriate value for C is 963.80 mm.

Therefore, the probability of a randomly chosen bolt having a width between 941 and 959 mm is 0.6294, and the appropriate value for C such that a randomly chosen bolt has a width less than C with probability 0.8729 is 963.80 mm.

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1/7 of the animals in the zoo are male monkeys.

To find the fraction of animals in the zoo that are male monkeys, we have to calculate the product of the fractions representing the proportion of monkeys and the proportion of male monkeys among them.

Given that 1/5 of the animals in the zoo are monkeys, we will then represent this as:

= 1/5

= 5/25.

And 5/7 of the monkeys are male which is written as 5/7.

To get fraction of male monkeys, we will multiply these two fractions:

= (5/25) * (5/7)

= 25/175

= 1/7.

Full question:

1/5 of the animals in the zoo are monkeys 5/7 of the monkeys are male. What fraction of the animals in the zoo are male monkeys?

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The range values of x is 7 < x < 25

The triangle represents the given parameter

As a general rule, all angles in a triangle must be greater than 0

This means that

5x - 35 > 0

Add 35 to both sides

So, we have the following representation

5x > 35

Divide both sides by 5

This gives

x > 7

Also, the angle must be less than 90

This is because the line AC divides angle BCD to unequal parts

Such that

5x - 35 < 90

So, we have

5x < 125

Divide by 5

x < 25

So, we have

x >7 and x < 25

Combine

7 < x < 25

Hence, the value of x that completes the blank is 25

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