A scuba diver dove from the surface of the ocean to an elevation of −69 9/10
feet at a rate of −21.5 feet per minute. After spending 12.5 minutes at that elevation, the diver ascended to an elevation of −38 9/10
feet. The total time for the dive so far was 19 1/8
minutes. What was the rate of change in the diver's elevation during the ascent? Round your answer to the nearest hundredth.

The quadratic equation that has roots (-1 - √2)/3 and (-1 + √2)/3 is:

x² + (2/3)x - 1/9 = 0

We have been given the roots of quadratic equation.

(-1 - √2)/3 and (-1 + √2)/3

We need to find the quadratic equation.

Since (-1 - √2)/3 and (-1 + √2)/3 are roots, (x - (-1 - √2)/3) and (x - (-1 + √2)/3) must be the factors of the quadratic equation.

So, the required quadratic equation would be,

(x - (-1 - √2)/3) * (x - (-1 + √2)/3) = 0

x[x - (-1 + √2)/3) ] - ( (-1 - √2)/3) [x - (-1 + √2)/3] = 0

x² - x(-1 + √2)/3 - x(-1 - √2)/3 + [(-1 - √2)(-1 + √2)]/9 = 0

x² - x(-2/3) + (1 - 2)/9 = 0

x² + (2/3)x - 1/9 = 0

Therefore, the quadratic equation that has roots (-1 - √2)/3 and (-1 + √2)/3 is: x² + (2/3)x - 1/9 = 0

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Answer: 60% of your teachers are female

Step-by-step explanation: 3 out of 5 is 60%

Step-by-step explanation:

I hope this will be helpful for you.

[tex]2x(x+3)-(12x-4)\\=2x^{2} +6x-12x+4\\=2x^{2} -6x+4[/tex]

I hope this helps.

Answer:

72,000 yards

Step-by-step explanation:

The scale factor can be found by doing:

[tex]240 \div 4 = 60[/tex]

This means that 60 is the scale factor. You can apply the scale factor to the length of the rectangular building, meaning that the length of the actual building is:

[tex]5 \cdot 60 = 300[/tex] yards

So, if the building is 240 yards wide, and 300 yards long. You can find the area of the actual building just like any other rectangle using:

[tex]A = l \cdot w[/tex]

(Area = length * width)

So, the final answer is:

[tex]A = 300 \cdot 240\\ A= 72,000[/tex]

This means that the area of the actual building is 72,000 yards.

The time taken by Peter to arrange the chairs all by himself is 10/3 minutes.

Given that :-

Katrina can arrange the chairs in the classroom in 5 minutes.

One day peter helped her and took both of them 2 minutes to arrange the chairs.

We have to find the time taken by Peter to arrange the chairs all by himself.

LCM (5,2) = 10

Let the total work of arranging the chairs is of 10 units.

We know that,

Efficiency of a person = Total Work/Time taken by person

Hence,

Efficiency of Katrina = 10/5 = 2 units

Efficiency of Katrina + Efficiency of Peter = 10/2 = 5 units

Hence,

Efficiency of Peter = 5 - 2 = 3 units

Hence, time taken by Peter to arrange the chairs all by himself  = 10/3 minutes.

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The range thumb rule The minimum and maximum values for the usual value, which is two, are 812.14 and 885.85, respectively.

An efficient way to calculate the range from the standard deviation is to use the range rule of thumb. The range is normally around four times the standard deviation, according to this information. Inferring that your range is around eight if your standard deviation is 2, for example.

As an illustration of a binomial distribution, we'll utilize seeds.

According to given data;

Let "X" represent the number of tomato seeds that actually germinate based on the data provided.

With the knowledge provided above, we can now determine the:

The median number of seeds that we may anticipate to germinate

standard deviation (σ): sqrt of n*p*(1-p)

Once you calculate the mean and standard deviation, you can calculate the minimum usual value and the max usual value.

Now, in your problem:

n = 1415

p = 3/5

so,

the mean would be: (1415)(3/5) = 849

the standard deviation would be:  sqrt (mean)(1-3/5) = 18.4282

Next, we find the minimum and maximum usual values according to the equations you gave:

minimum:  mean - 2(standard deviation)

                = 849 - 2(18.4282)

                = 812.1436

maximum: mean + 2(standard deviation)

                = 849 + 2(18.4282)

                = 885.8564

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Using the exterior angle of a polygon theorem, the value of the missing angle is 58°

From the question, we are to calculate the value of the missing angle.

From the given information, the missing angle is (3x -2)°.

To calculate the value of the missing angle,

First, we will determine the value of x

From the Exterior angle of a polygon theorem, we can write that

90° + (3x + 12)° + (4x - 10)° + (3x - 2)° + 70° = 360°

(3x + 12)° + (4x - 10)° + (3x - 2)° = 360° - 70° - 90°

3x° + 12° + 4x° - 10° + 3x° - 2° = 200°

10x° = 200° + 2° + 10° - 12°

10x° = 200°

x = 200/10

x = 20

The missing angle is (3x -2)°

Substitute the value of x

(3(20) -2)°

= (60 -2)°

= 58°

Thus,

The missing angle measure is 58°

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Answer:

Hope the picture will help you

Answer:

0.635

Step-by-step explanation:

This is half way between 0.63 and 0.64.

Hope this helps!

Surface area of a cylinder= 2πr(h+r)

=2×22/7×5×(13+5)

=31.43×(18)

=565.74meter squared

The values for the parabola are found as-

For the given question.

The total horizontal distance covered by water is 10 feet.

The maximum height attained by nozzle of water is 8 feet.

Thus, the vertex of parabola (h, k) = (5, 8)

The nozzle was 4 foot above the ground, a = 4.

The equation of parabola becomes;

y = a(x - h)² + k

y = 4(x - 5)² + 8

Thus, the equation of parabola becomes; y = 4(x - 5)² + 8.

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The best description of the value of the expression 2x - 7, when x = 5 is B. The result is a prime number.

A prime number cannot be divided by another number except by itself or 1.

Common prime numbers include 2, 3, 5, 7, 11, 13, 17, and 19.

The value of 2x – 7, when x = 5 is 3.

3 is a prime number as well as a whole number, but it is not a composite number.

Thus, we can conclude that the result of solving the expression is the prime number 3.

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Answer:

the answer is -60........

Answer:

-60! 1560 divided by 26 is 60, but any negative divided by a positive is a negative, so the product will be negative as well.

Step-by-step explanation:

Hope it helps! =D

In this mathematical expression, the original number is 4.

We can use a mathematical equation to work out the original number.

A mathematical equation uses variables, numbers, and constants to show that two values are equal.

Mathematical equations connect two mathematical expressions using the equal sign (=).

Let the original number = x

According to the statement:

2x + 28 = {4}{9}

This implies that:

2x + 28 = 36

Subtracting 28 from both sides gives:

2x = 8

x = 4

Thus, the original number is 4.

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If the family’s monthly income is $3,286, Wren family budgets for entertainment each month is $328.60.

Income, which is typically stated in the monetary terms, is the spending and saving opportunity acquired by an entity within a given duration. Conceptually, income is hard to define, and different fields may have the distinct definitions. For instance, a person's income may differ from their income as defined by law and in an economic sense.

Haig-Simons income, which defines income as Consumption + Change in Net Worth and is commonly applied in economics, is a very significant definition of income.

Income is a total that includes any wages, salaries, profits, interest payments, rent, or other forms of earnings received in a calendar year for families and individuals in the United States, as defined by tax law. Gross income less taxes and other deductions (such as required pension payments) is a common definition of discretionary income and is frequently used as a benchmark to assess the wellbeing of taxpayers.

The idea may include the accumulation of both monetary and non-monetary consumption capacity, with the former (monetary) serving as a stand-in for total income in the field of public economics.

Gross income for a business is the total revenue less the cost of items sold. Costs are subtracted from revenue by cost of goods sold, expenses, depreciation, interest, and taxes to arrive at net income.

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Applying the rules of exponents, the value of n in the equation given is calculated as: n = 8.

The product rule of exponents says that when the base are the same, add their exponents together.

For example, m × m² = m^(1 + 2) = m³.

The exponents are 1 and 2. The expression has similar base of m. Therefore, to multiply m and m² together, we would simply add their exponents together while the final result will be the same base.

Also, the negative rule of exponents states that we subtract their exponents if they have he same base.

For example:

m³/m² = m³ ÷ m² = m^(3 - 2) = m.

Given the equation:

[tex]\frac{4^3 \times 8^2}{2^n} = 2^4[/tex]

Simplify the bases to make all equal

= [tex]\frac{2^{(2)(3)} \times 2^{(3)(2)}}{2^n} = 2^4[/tex]

= [tex]\frac{2^{6} \times 2^{6}}{2^n} = 2^4[/tex]

Apply the product rule and the negative rule of exponents to find the value of n in tye equation:

[tex]2^{(6 + 6 - n)} = 2^4\\\\2^{(12 - n)} = 2^4\\\\[/tex]

The bases will cancel each other:

12 - n = 4

Subtract 12 from both sides

12 - n - 12 = 4 - 12

-n = -8

Divide both sides by -1

n = 8

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The definition for the function is y = {-2x +1   x < 1 ; -x + 2   x ≥ 1. The correct option is b.

From the question, we are to determine the equation for the function

First, we will determine the equation for when x < 1

Picking the points (-1, 3) and (0, 1)

Using the formula,

(y - y₁) / (x - x₁) = (y₂ - y₁) / (x₂ - x₁)

(y - 3) / (x - -1) = (1 - 3) / (0 - -1)

(y - 3) / (x + 1) = -2 / (0 + 1)

(y - 3) / (x + 1) = -2 / 1

(y - 3) / (x + 1) = -2

y - 3 = -2(x + 1)

y - 3 = -2x - 2

y = -2x - 2 + 3

y = -2x + 1

Thus,

When x < 1, the function is y = -2x + 1

Now, determine the equation for when x ≥ 1

Picking the points (1, 1) and (2, 0)

(y - y₁) / (x - x₁) = (y₂ - y₁) / (x₂ - x₁)

(y - 1) / (x - 1) = (0 - 1) / (2 - 1)

(y - 1) / (x - 1) = -1 / 1

(y - 1) / (x - 1) = -1

y - 1 = -1(x - 1)

y - 1 = -x + 1

y = -x + 1 + 1

y = -x + 2

Thus,

When x ≥ 1, the function is y = -x + 2

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Step-by-step explanation:

equate the two small distances to the total distance and solve for x

The probability is a + b + c = -382

Probability refers to potential. A random event's occurrence is the subject of this area of mathematics. The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.

Every cube's side is [tex]\sqrt[3]{1000}[/tex] = 10

Since there are 512 unpainted cubes within, the likelihood is 1⁵¹² = 1

There are 8 corners, and each one has a chance of 3 / 6 = 1 / 2 = 2⁻¹ so the probability is 1⁸ / 2 = 1 / 2⁸

There are 8 * 12 = 96 edge pieces (12 edges total, with 8 on each edge; each cube has a probability of 4 / 6 = 2 / 3, so the probability is 2⁹⁶ / 3 = 2⁹⁶ / 3⁹⁶

There are 8 * 8 * 6 = 384 center cubes, each having a chance of 5 / 6, so the probability is 5³⁸⁴ / 6 = 5³⁸⁴ / 6³⁸⁴ = 5³⁸⁴ / (2³⁸⁴ * 3³⁸⁴)

So, the probability is:

(1 / 2⁸) * (2⁹⁶ / 3⁹⁶) * [5³⁸⁴ / (2³⁸⁴ * 3³⁸⁴)]

= (5³⁸⁴ * 2⁹⁶) / (2³⁹² * 3⁴⁷⁰)

= 5³⁹⁴ * 2⁹⁶ * 2⁻³⁹² * 3⁻⁴⁷⁰

= 5³⁸⁴ * 2⁻²⁹⁶ * 3⁻⁴⁷⁰

Thus, a + b + c = -382

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The amount of money would be $1115.45 the zoo makes selling the waste that day.

A Z-score is defined as the fractional representation of data point to the mean using standard deviations.

They charge farmers $5 per pound for the daily feces from the elephants. If an elephant's daily waste production is at or below the 10th percentile for the distribution of waste which is given in the question.

To determine the amount of money would the zoo make selling the waste that day.

P(z ≤ z₀) = 0.1

z₀ = -1.28

⇒z₀ =(x₀ -μ ) / σ

Substitute the values and solve for x₀,

⇒ -1.28 =(x₀ -250 ) / 21

⇒x₀ = (-1.28)×21 - 250

⇒x₀ = 223.09

So the amount of money would be as :

⇒ 223.09 × 5

⇒ 1115.45

Therefore, the amount of money would be $1115.45 the zoo makes selling the waste that day.

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Based on the report that digital music had led to a global revenue of $6.85 billion, the option that describes the accuracy of this report is that B. The report is probably accurate because the number is not very specific.

Digital music revenue recognition might vary from country to country. This means that what constitutes revenue for one country, might not be revenue in another. For that reason, we cannot say that businesses measure revenue accurately.

The report can however be very accurate even if it isn't completely accurate. This shown by the number not being specific to the last cent.

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Answer:

-0.5 or -1/2

Step-by-step explanation:

(5x) + (3x+4) = 8x+4

8x+4 = 0

8x = -4

x = -0.5

Hope that helps

perimeter of triangle is =  3 + 5 + 4 = 12 cm

perimeter of rectangle is = 2( 3 + 6 ) = 18 cm

perimeter of parallelogram is = 2 (5+7) = 24 cm

A perimeter is a closed path that encompasses, encircles, or delineates a one-dimensional length or a two-dimensional shape. The circumference of a circle or an ellipse is referred to as its perimeter. Perimeter calculations have many practical applications.

perimeter of triangle is =  3 + 5 + 4 = 12 cm

perimeter of rectangle is = 2( 3 + 6 ) = 18 cm

perimeter of parallelogram is = 2 (5+7) = 24 cm

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[tex]5\sqrt{20} = 5\sqrt{4.5} = 5.2\sqrt{5} = 10\sqrt{5}[/tex]

[tex]10\sqrt{5} - 4\sqrt{5} = 6\sqrt{5}[/tex]

The correct answer to task 804 × 79 is 63,516.

When we multiply a number and another together, or a number and a variable, or even a variable with another variable, we mean the product of the two factors. The multiplication sign is " × " .

The step by step explanation of the task above is given below:

804 × 79 = 63,516.

Another example of Multiplication is

40 × 2 = 80.

The product of a and b also means Multiplication.

a and b means a × b = ab.

The product or the multiplication of g and 5 means g × 5 = 5g.

In conclusion, from the detailed information and explanation given above, the product of 804 × 79 is 63,516.

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Answer:

164 cm

Step-by-step explanation:

(4x6) / 2= 12

12x2=24  because there are 2 triangles

10x6=60  for the rectangle

(4x10) x 2=80 for the sides

80+60=140

140+24=164

If the range of the data set is 19. Then the maximum value of the set will be 28.

Statistics is the study of collection, analysis, interpretation, and presentation of data or discipline to collect and summarise the data.

The range of the data is the difference between the maximum number to the minimum number. Then the formula is written as,

Range = Maximum value - Minimum value

The range of a set of numbers is 19. And the minimum value is 9.

Then the maximum value of the set is calculated as,

Range = Maximum value - Minimum value

19 = Maximum value - 9

Maximum value = 19 + 9

Maximum value 28

If the range of the data set is 19. Then the maximum value of the set will be 28.

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