|BRAINLIEST|
Sarah cuts a shoelace that is 1/2 yard long into 4 equal pieces.

What is the length of each piece of shoelace?

Enter your answer as a fraction in simplest form by filling in the boxes.

Answer:

c

Step-by-step explanation:

trust me

Answer:

it is the 3rd one

Step-by-step explanation:

I did this question

Answer:

A. 2/5

B. 3/5

Step-by-step explanation:

Answer:

Line B is the steeper line.

Explanation: Line B is more straight down than line A

Answer:

negative 0.5 less-than-or-equal-to z less-than-or-equal-to 0.5

Step-by-step explanation:

its the peak of the graph

Answer:

B

Step-by-step explanation:

on edge

The solutions of the quadratic equation 3x² + 9x + 17 = 0 are x₁ = (-9 + √(123)i) / 6 and x₂ = (-9 - √(123)i) / 6, where "i" represents the imaginary unit.

To find the solutions of the quadratic equation 3x² + 9x + 17 = 0, we'll use the quadratic formula:

x = (-b ± √(b² - 4ac)) / 2a.

Here, a = 3, b = 9, and c = 17. We'll plug these values into the formula and simplify the expression step-by-step.

Step 1: Calculate the discriminant (Δ) using the formula Δ = b² - 4ac.

Δ = (9)² - 4 * 3 * 17

Δ = 81 - 204

Δ = -123

Step 2: Substitute the values of a, b, and Δ into the quadratic formula.

x = (-9 ± √(-123)) / 2 * 3

Step 3: Since the discriminant (Δ) is negative, the quadratic equation has no real solutions. Instead, it has two complex solutions.

Step 4: Simplify the expression under the square root.

x = (-9 ± √(-123)) / 6

Step 5: Now, we deal with the square root of a negative number, which is denoted by "i" in the complex number system. √(-123) = √(123)i.

Step 6: Substitute the value of √(-123) back into the equation.

x = (-9 ± √(123)i) / 6

Step 7: Divide both the real and imaginary parts by 6 to get the two complex solutions.

x₁ = (-9 + √(123)i) / 6

x₂ = (-9 - √(123)i) / 6

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Final answer:

The quadratic equation 3x^2 + 9x + 17 = 0 has no real solutions because the discriminant is negative. The solutions are complex numbers and can be expressed as x = -3/2 ± √(123)/6 × i.

Explanation:

To find the solutions of the quadratic equation 3x^2 + 9x + 17 = 0, we will use the quadratic formula, which is x = (-b ± √(b^2 - 4ac)) / (2a) for a quadratic equation of the form ax^2 + bx + c = 0. In our case, a = 3, b = 9, and c = 17. Plugging these values into the formula gives:

x = (-(9) ± √((9)^2 - 4(3)(17))) / (2(3))

x = (-9 ± √(81 - 204)) / 6

x = (-9 ± √(-123)) / 6

Since the discriminant (the part under the square root, b^2 - 4ac) is negative, the equation has no real solutions. Instead, the solutions are complex numbers:

x = (-9 ± √(-123)i) / 6

The final solutions can be expressed as:

x = -3/2 ± √(123)/6 × i

Answer:

3,1,5,4,8,6 is 1.83 for mean absolute deviation

Step-by-step explanation:

The student correctly calculated the mean and the absolute deviations from the mean, but did not divide the sum of these by the number of data points to find the mean absolute deviation. The correct mean absolute deviation is 11 divided by 6, equal to 1.83 (rounded to two decimal places).

Based on your computations, it looks like you did correctly compute the mean absolute deviation (MAD). The first step is to find the mean (average) of the data set, which you correctly found to be 4.5 by summing the data points (3, 1, 5, 4, 8, 6) and dividing by the number of data points (6). Then, you correctly computed the absolute deviations from the mean for each data point (|1-4.5|, |3-4.5|, |4-4.5|, |5-4.5|, |6-4.5|, |8-4.5|), and summed these to get a total absolute deviation of 11. Finally, you divided this total by the number of data points (6) to find the mean absolute deviation. However, you missed this final division step in your calculations. The MAD should be 11/6 = 1.83 (rounded to two decimal places).

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Answer:

there isn't enough information

Step-by-step explanation:

Answer:

r = -3

16th term: -516560652

Step-by-step explanation:

Let's use the formula for a geometric sequence:

[tex]a_n=a_1r^{n-1}[/tex], where [tex]a_n[/tex] is the nth term, [tex]a_1[/tex] is the first term, and r is the common ratio

Here, we know the first term is 4. To find r, let's plug in 8 for n and -8748 for [tex]a_n[/tex]:

[tex]a_n=a_1r^{n-1}[/tex]

-8748 = 4 * [tex]r^{8-1}[/tex]

-8748 = 4 * [tex]r^7[/tex]

[tex]r^7[/tex] = -2187

r = -3

So we know that the common ratio is -3. Now, we want to find the 16th term, so n = 16:

[tex]a_n=a_1r^{n-1}[/tex]

[tex]a_{16}=a_1*(-3)^{16-1}=4*(-3)^{17}=-516560652[/tex]

Answer:

r = -3

16th term: -516560652

Step-by-step explanation:

Let's use the formula for a geometric sequence:

, where is the nth term, is the first term, and r is the common ratio

Here, we know the first term is 4. To find r, let's plug in 8 for n and -8748 for :

-8748 = 4 *

-8748 = 4 *

= -2187

r = -3

I got the correct answers! :)

The rate at which the water level fell is 1.05 mm/year. To find the total variation in water level, multiply this rate by 2.48 years, giving a total variation of 2.604 mm.

In Mr. Whittaker's science class, Matea recorded that the water level in one part of the river fell by 1.05 millimeters per year. This number - 1.05 millimeters - represents the rate at which the water level fell each year. To find the total variation in water level over the 2.48 years, you would multiply the rate (1.05 mm/year) by the time (2.48 years). So, the solution would be: 1.05 mm/year * 2.48 years = 2.604 mm. This results in a total variation of 2.604 millimeters over the 2.48 years. This total variation can now be compared to the average annual trend which is a rise of 1.8 mm/year.

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Answer:

Option 3

Step-by-step explanation:

The line between the two shapes is 6 units away from the first B point.

Answer:

A

Step-by-step explanation:

Scientific Notation

The scientific notation for the product of 500 and 400 is 20 × [tex]10^4[/tex] and this can also be written as 2.0 × [tex]10^4[/tex]. So, options A and D are correct.

Given numbers are 500 and 400

Their product is 500 × 400 = 200000

This is a large number.

So, the power of 10 is positive and the scientific notation is written as:

200000 = 20 × [tex]10^4[/tex]

              = 2.0 × [tex]10^5[/tex]

Therefore, options A and D are correct. The product of 500 × 400 = 20 × [tex]10^4[/tex] = 2.0 × [tex]10^5[/tex].

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Answer:

The range of areas is 3.14ft^2- 12.56ft^2

Step-by-step explanation:

I don't know which graph the question is referencing but I found the range of areas this way

first I found out what the range of radius would be

since the circumference is pi*diameter

So to find the diameter I did the individual areas divided by pi

6.28/3.14=2

12.56/3.14=4

So the range of diameters is 2 to 4 this means the range of radius's are 1 to 2

Since area of a circle is r^2*pi

This means the range of areas is

1^2*3.14=3.14

2^2*3.14=12.56

So the range of areas is 3.14ft^2 to 12.56ft^2

Answer:

B

Step-by-step explanation:

sorry this doof was being confusing

Answer:

2

Step-by-step explanation:

1/2(2/3)

3/6(4/6)

3(4)

12/6=2

Answer:

621/87=7.13793103448

Step-by-step explanation:

I divided it and got this answer

Answer: 621 divided by 87 is 7 with the remainder of 12.

Step-by-step explanation:

Answer: 120 km/h

Step-by-step explanation:

Hi, to answer this question, first, we have to calculate Hunk's time spent on his travel.

Speed rate = distance /time

Time = distance /speed = 540/ 90 =6 hours

Now, since Tim completed the same amount of distance with 1 hour and 30 min less (1.5) we have to subtract 1.5 hours to Hunk's time to calculate Tim’s time:

6-1.5 = 4.5 hours

Tim's speed rate = distance /time

s = 540/4.5 = 120 km/h

Feel free to ask for more if needed or if you did not understand something.  

Final answer:

The rate of change is 1 and the initial value is 1.

Explanation:

The table shows the points (2, 3), (4, 5), (6, 7), and (8, 9). To find the rate of change, we can calculate the difference in y-coordinates and divide by the difference in x-coordinates for any two points. Let's take the points (2, 3) and (4, 5) as an example:

The difference in y-coordinates is 5 - 3 = 2.

The difference in x-coordinates is 4 - 2 = 2.

The rate of change is 2 / 2 = 1.

To find the initial value, we can look for the y-coordinate when x is 0 or when the equation is of the form y = mx + b. In this case, the initial value is 1.

Answer:

Answer is 63

Answer is rounded to the nearest tenth place.

Step-by-step explanation:

[tex]area \: of \: sector \: = \frac{theta}{360} \times \pi \: {r}^{2} \\ here \: theta \: = 72 \: degrees \: and \\ radius \: = 10 \\ on \: substituting \: the \: values \: in \: the \: formula \\ area \: of \: sector \ = \frac{72}{360} \times \pi \: {10}^{2} \\ \: \: = \frac{1}{5} \times 100\pi \\ = 0.2 \times 100 \times \pi \\ = 62.83 \\ are \: of \: sector \: is \: approximately \: \\ equal \: to \: 63[/tex]

HAVE A NICE DAY!

THANKS FOR GIVING ME THE OPPORTUNITY TO ANSWER YOUR QUESTION.

Answer:

49

Step-by-step explanation:

If the volume of a cube is 343 cubic centimeters, then the length of one of the edges must be 7, because 7^3=343. If the side length is 7, then the area of the square base is 7^2=49 square centimeters. Hope this helps!

Answer:

43.96 inches

Step-by-step explanation:

when you have the diameter of a circle, you just multiply it by pi and you will get the answer. since your diameter is 14, you multiply it by 3.14 and you will get 43.96 inches

Using π as 3.14, the circumference of the circle with a diameter of 14 inches is approximately 43.96 inches. This level of precision is suitable for most practical applications.

To find the circumference (C) of a circle, you can use the formula C = πd, where d is the diameter. In this case, the diameter is given as 14 inches.

Given the options of using either 22/7 or 3.14 for π, let's use 3.14 for this calculation.

C = 3.14 × 14

≈ 43.96 inches

Therefore, the circumference of the circle is approximately 43.96 inches when using π as 3.14. This means that if you were to wrap a string around the edge of the circle, it would take nearly 43.96 inches of string to complete one full loop.

It's important to note that using 22/7 for π is another approximation and yields a slightly different result, but for most practical purposes, 3.14 is accurate enough.

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Answer: 2z+4/y+7

Step-by-step explanation:

We are trying to solve for x

7x-2z=4-xy

Add xy to both sides:

7x-2z+xy=-xy+4+xy= xy+7x-2z=4

Then you add 2z to both sides:

xy+7x-2z+2z=4+2z

xy+7x=2z+4

Then you factor out variable x

x(y+7)=2z+4

You divide both sides by y+7

x(y+7)/y+7= 2z+4/y+7

Which we would get x=2z+4/y+7

Like terms are those terms that are having the same variables, also the variables are of the same order as well. The value of the x can be written as (4 + 2z)/(7 + y).

Like terms are those terms that are having the same variables, also the variables are of the same order as well.

for example, 25x and 5x are like terms; 30xy and 7xy are like terms, 9x³ and 4x² are not like terms, etc.

7x - 2z = 4 - xy

Bring like terms together,

7x + xy = 4 + 2z

Take x as common from the left side of the equation,

x(7 + y) = 4 + 2z

x = (4 + 2z)/(7 + y)

Hence, the value of the x can be written as (4 + 2z)/(7 + y).

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Answer:

x=9

Step-by-step explanation:

3 ^ (x-4) = 243

Rewrite 243 as a power of 3

3 ^ (x-4) =3^5

Since the bases are the same, the exponents are the same

x-4 =5

Add 5 to each side

x-4+4 = 5+4

x=9

Answer:

Y=18x

Step-by-step explanation:

You have to add 6x plus 5 and you get 11x then you have to subtract 2x from that 11x to get 9x then you have to add 4 plus 5 and you get 9 and add 9x +9 and you get 18x. So Y=18x

If i am wrong i am sorry i am just trying to help but tell me whether i am right or wrong.

A. n ≤ 6

May I have brainliest please? :)

Answer:

mean= 8.8

median= 9

mode= 9

range= 10

ANSWER: A

Step-by-step explanation:

Answer:

surface are: 300 cm2

volume: 450cm3

Step-by-step explanation:

Hi, to answer this question we have to apply the next formulas:

Surface area of a box = 2wl + 2hw + 2 lh

Where w is the width of the box, l is the length of the box, and h is the height of the box.

The top sides and bottom have only length and width, since there is no top side, the surface area is equal to the outer 5 surfaces.

S = wl + 2hw + 2 lh

Replacing with the values given:

S = (15x10)+ 2(3x10)+ 2(15x3)

S = 150+60+90=300 cm2

For the volume we simply apply:

Volume of a rectangular prism: length x width x height

V = 15x10x3 = 450cm3

Feel free to ask for more if needed or if you did not understand something.  

Answer:

1). 1 decade

2). 2 decades

Step-by-step explanation:

Number of years in decade = 10 years

1). When we are calculating the population of Florida between 1840 to 1850,

Number of years between 1850 and 1840 = 1850 - 1840

                                                                      = 10 years

So number of decades between 1840 and 1850 = [tex]\frac{10}{10}[/tex] = 1 decade

2). Number of years between 1840 and 1860 = 1860 - 1840

                                                                           = 20 years

Therefore, number of decades between this gap = [tex]\frac{20}{10}=2[/tex] decades

Answer:

4√3

Step-by-step explanation:

sorry that I was late I just taken it sorry

Prisms are 3-D shape with triangles and a base. The value of x from the diagram in radical form is 4√3

From the given figure, we are to find the value of "x". To do this, we will use the identity

Given the following parameters

slant height  = 8m

Opposite side = x

Determine the value of "x"

Sin 60 = x/8
x = 8 sin60
x = 8 * √3/2
x = 4√3

Hence the value of x from the diagram in radical form is 4√3

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