Is (7,-6) a solution to this system of equations?
y = 1/7x+ 7
X = 7
yes
no

We need to first determine how many totally odd counting numbers there are between 1 and 9. The answer is 250.

It is an integer that is not divisible by two and therefore has a remainder of 1 when divided by two. It is also referred to as an odd number, an odd integer, or an uneven number.

For this, let us consider all the digits from 1 to 9, and their respective sums.

Digit: 1 Sum: 1 (odd)

Digit: 3 Sum: 3 (odd)

Digit: 5 Sum: 5 (odd)

Digit: 7 Sum: 7 (odd)

Digit: 9 Sum: 9 (odd)

Since all the digits between 1 and 9 and their respective sums are all odd, it means that any counting number less than 10 that is composed of only these digits would be totally odd. This means that there are 5 totally odd counting numbers less than 10, i.e., 1, 3, 5, 7 and 9.

Now, since any counting number less than 1000 can be composed of any combination of these 5 digits, the total number of totally odd counting numbers less than 1000 can be calculated by multiplying the number of digits (5) by the number of combinations of those digits (999). The result of this calculation is 250, which is the answer to the question.

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Using percentages we know that the bucket which is of 460 grams is made up of 92 grams of recyclable plastic.

A% is a mathematical figure or ratio that denotes a percentage of 100.

Ratios, fractions, and decimals are some of the numerous ways to represent a dimensionless connection between two numbers.

The symbol "%" is generally written after the integer to denote percentages.

A figure or ratio that is stated as a fraction of 100 is referred to as a percentage in mathematics.

So, in the given situation we will use percentages to get what % of recyclable plastic is used as follows:

= 460/100 * 20

= 4.60 * 20

= 92 grams

Therefore, using percentages we know that the bucket which is of 460 grams is made up of 92 grams of recyclable plastic.

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The statement "These lines are perpendicular" is true.

To determine if the two lines are perpendicular, we need to check if the product of their slopes is -1. That is, if:

m1 × m2 = -1

where m1 is the slope of the first line and m2 is the slope of the second line.

The slopes of the two lines are:

m1 = -2/5

m2 = 5/2

So, m1 × m2 = (-2/5) × (5/2) = -1

Since the product of the slopes is -1, the two lines are perpendicular. Therefore, the statement "These lines are perpendicular" is true.

The correct answer is A. true.

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The correct answer as a trinomial in descending degree order is -2x^2 + 6x + 4

Here's the step-by-step solution with the figures:

(5x^2 + 10x - 5) - (7x^2 + 4x - 9)

= 5x^2 + 10x - 5 - 7x^2 - 4x + 9 (distribute the negative sign)

= (5x^2 - 7x^2) + (10x - 4x) + ( -5 + 9) (collect like terms)

= -2x^2 + 6x + 4 (simplify and arrange in descending degree order)

Therefore, the simplified expression in descending degree order is -2x^2 + 6x + 4.

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The statement "The capital letter N produces the same capital letter after being rotated 180°" is true.

If you rotate the capital letter N 180°, it will produce the same capital letter, as it has rotational symmetry.

The letter N has a vertical line of symmetry in the center, which means that if you rotate it 180°, it will overlap perfectly with its original position, producing the same letter.

So, the statement "The capital letter N produces the same capital letter after being rotated 180°" is true.

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Answer:

--------------------

'At most' means less than or equal, therefore the quotient of p and q is:

The matching choice is D.

'At least' means more than or equal, therefore the reciprocal of w is:

The matching choice is A.

Answer:

g) The correct option is: p/q ≤ 6

The phrase "the quotient of p and q" means p divided by q, which is expressed as p/q. The statement "the quotient of p and q is at most 6" means that the value of p/q cannot exceed 6, but it can be less than or equal to 6. Therefore, we use the less than or equal to a symbol (≤) to represent this statement.

here is an explanation of each option:

Here's how to express each statement as an inequality in terms of 8a^2:

p/q ≤ 6:

p ≤ 6q

8a^2p ≤ 48a^2q

8a^2p ≤ 48a^2q

h) The correct option is: 1/w ≤ 9

The reciprocal of a number w is 1/w. The phrase "the reciprocal of w is at least 9" means that the value of 1/w cannot be less than 9, but it can be greater than or equal to 9. Therefore, we use the less than or equal to symbol (≤) to represent this statement.

Here's an explanation of each option:

Here's how to express each statement as an inequality in terms of 8a^2:

1/w ≤ 9:

1 ≤ 9w

0 ≤ 9w - 1

0 ≤ 72a^2w - 8a^2

0 ≤ 72a^2w - 8a^2

Note that the inequality for 1/w ≤ 9 involves a quadratic term with respect to "w," whereas the inequality for p/q ≤ 6 only involves linear terms with respect to "p" and "q."

Answer:

30 minutes

Step-by-step explanation:

1/45 m + 1/90 m = 1

2/9 m + 1/90 m = 1

3/90 m = 1   Multiply both sides by 90/3

90/3 x 3/90 m = 1 x 90/3

m = 90/3

m = 30

Helping in the name of Jesus.

Answer:

200

Step-by-step explanation:

Turn the 31% back to a decimal = 0.31

62/ x = 0.31

multiply each side of the equation by x to cancel it out from under the fraction

62 = 0.31x

divide each side by 0.31 to have to x alone

200 = x

Check work:

62/200 = 0.31 x 100 = 31%

a) The largest squares that will fit on the land will have sides of length 3 meters. The area of each square is 3 * 3 = 9 square meters.

b) The number of squares that will fit on the land is 61773.

Explain square

A square is a geometric shape with four sides of equal length and four right angles. It is a type of rectangle, but all of its sides are the same length. Squares are used in mathematics to represent and calculate areas and volumes, and they also have applications in architecture and art.

According to the given information

(a) To find the area of the largest squares that will fit on the land, we need to find the greatest common divisor (GCD) of the dimensions 735 and 756, and then square it.

To find the GCD, we can use the Euclidean algorithm:

GCD(735, 756) = GCD(735, 756 - 735) = GCD(735, 21) = GCD(21, 735 - 21 * 35) = GCD(21, 210) = GCD(21, 210 - 21 * 10) = GCD(21, 90) = GCD(21, 90 - 21 * 4) = GCD(21, 6) = GCD(6, 21 - 6 * 3) = GCD(6, 3) = 3

Therefore, the GCD of 735 and 756 is 3. The largest squares that will fit on the land will have sides of length 3 meters. The area of each square is 3 * 3 = 9 square meters.

(b) To find how many squares will fit on the land, we need to divide the total area of the land by the area of each square. The total area of the land is:

735 * 756 = 555960 square meters

The area of each square is 9 square meters, as we found in part (a). Therefore, the number of squares that will fit on the land is:

555960 / 9 = 61773.333...

Since we can't have a fractional number of squares, we need to round down to the nearest integer. Therefore, the number of squares that will fit on the land is 61773.

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Answer:

A. m∠X = 50°, AC = 3 cm

Step-by-step explanation:

If ABC is congruent to XYZ then the corresponding angle and sides are congruent so:

∠A = ∠X

∠B = ∠Y

∠C = ∠Z

and

AB = XY

BC = YZ

AC = XZ

Because we know m∠A is 50° and ∠A and ∠X are congruent then m∠X is also 50°

And because we know XZ is equal to 3 cm and XZ and AC are congruent  then AC is also 3 cm

The number of hours Matt babysits his sister is 1 and half hours.

Given that, Matt's parents pay him $5.50 for each half hour he babysits his sister, plus a two dollar tip.

Let the number of half an hours Matt babysits his sister be x.

Matt made $18.50

So, equation is 5.50x+2 =18.50

5.50x=16.50

x=16.50/5.50

x= 3

Which means 1 and half hours he babysits his sister.

Therefore, the number of hours Matt babysits his sister is 1 and half hours.

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a polynomial of degree 5 with integer coefficients that has zeros -2, √3i, √2i, and y-intercept of 36 is

[tex]f(x) = x^{5} + 5x^{4} + 13x^{3} + 21x^{2} - 6x + 84[/tex]

Let us begin by writing the polynomial factors using the supplied zeros:

Because -2 is a zero, the polynomial has a component of (x + 2).

Because [tex]\sqrt{ 3i }[/tex] is a zero, its conjugate -[tex]\sqrt{ 3i }[/tex] is likewise a zero, implying that the polynomial has a component of (x - [tex]\sqrt{3i}[/tex])(x + [tex]\sqrt{3i}[/tex]) = (x2 + 3).

Similarly, because [tex]\sqrt{2i}[/tex] is a zero, its conjugate -[tex]\sqrt{ 2i }[/tex] is also a zero, implying that the polynomial has a component of (x - [tex]\sqrt{ 2i }[/tex])(x + [tex]\sqrt{ 2i }[/tex]) = (x2 + 2).

Finally, we know that the y-intercept is 36, which means that the polynomial's constant term is 36 when x=0.

When we add these components together, we get:

[tex]f(x) = (x + 2)(x^2 + 3)(x^2 + 2) + 36[/tex]

Extending on this, we get:

[tex]f(x) = x^{5} + 5x^{4} + 13x^{3} + 21x^{2} - 6x + 84[/tex]

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Answer:

the answer is D. 9e³x.

Step-by-step explanation:

If f(x) = e³x, then we can find its derivative using the chain rule of differentiation as follows:

d/dx(e³x) = 3e³x * d/dx(3x) = 3e³x * 3 = 9e³x

= D. 9e³x.

Answer:

A

Step-by-step explanation:

The values of t for which the height of the ball is of 26 feet are given as follows:

t = 0.57 s and t = 2.18 s.

The quadratic function that models the height of the ball after t seconds is given as follows:

h(t) = -16t² + 44t + 6.

The height of the ball is of 26 feet when:

h(t) = 26

Hence:

-16t² + 44t + 6 = 26

16t² - 44t + 20 = 0.

The coefficients are given as follows:

a = 16, b = -44, c = 20.

Using a quadratic function calculator, the solutions to the quadratic equation are given as follows:

t = 0.57 s and t = 2.18 s.

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Answer:

[tex]m = \frac{4 - ( \sqrt[3]{ - 6} + 4)}{0 - ( - 6))} = \frac{ \sqrt[3]{6} }{6} = .303[/tex]

So the average rate of change of g(x) over -6 < x < 0 is about .303.

Answer:

0.506

0.516

0.609

0.615

Step-by-step explanation:

Answer:

D(last option)

Step-by-step explanation:

This question might be a bit confusing since a lot of questions like this one require actually visualizing the question. The man in the lighthouse isn't trying to throw the rope directly in front of him to the birds, but rather to the boat.

The angle of depression here is the angle formed from the rope and the man's line of sight. Therefore, the angle of depression is congruent to the angle's alternate interior counterpart, which is the angle of elevation formed from the boat to the water.

From there, we solve like an angle of elevation question. We have the rope length, which is the hypothenuse, but we need to find the length of the side adjacent to the angle of elevation. So, we use cosine.

We just need to plug in the values here. The measure of the angle goes right next to the trig function we are using, and in cosine, the measure of the adjacent angle goes over the measure of the hypothenuse.

Therefore, the answer is D, or the last option.

Answer:

[tex]\textsf{D)} \quad \cos \left(24^{\circ}\right)=\dfrac{x}{45}[/tex]

Step-by-step explanation:

The angle of depression is the angle between the horizontal line of sight of the man in the lighthouse, and the direct line of sight to the boat below him.

To find how far from land the boat is, we can model the scenario as a right triangle.

The angle of depression (24°) is the angle formed by the hypotenuse and the horizontal leg of the right triangle.

If the distance to throw a rope from the top of the lighthouse to the boat is 45 feet, then the hypotenuse of the triangle is 45 feet.

The distance between the boat and the land is the side adjacent to the angle, so we can find this by using the cosine trigonometric ratio.

[tex]\boxed{\begin{minipage}{9 cm}\underline{Cosine trigonometric ratio} \\\\$\sf \cos(\theta)=\dfrac{A}{H}$\\\\where:\\ \phantom{ww}$\bullet$ $\theta$ is the angle. \\ \phantom{ww}$\bullet$ $\sf A$ is the side adjacent the angle. \\\phantom{ww}$\bullet$ $\sf H$ is the hypotenuse (the side opposite the right angle). \\\end{minipage}}[/tex]

Given:

Substitute these values into the ratio to create the required equation:

[tex]\large\boxed{\cos \left(24^{\circ}\right)=\dfrac{x}{45}}[/tex]

Answer:

To determine the possible values of h, we need to first understand what is meant by the range.

The range is the difference between the highest value and the lowest value in a set of numbers. In this case, we don't know what the full set of numbers is, but we know that the range is 3.

The highest number in the set is 4 (since there are no higher numbers in the set than 4), and the lowest number in the set is either 1 or 2. This is because the range is 3, and there are only two possible sequences of three consecutive integers that include the number 4: 2, 3, 4 and 1, 2, 3.

So to find the possible values of h, we need to add 3 to each of the possible lowest numbers in the sequence.

If the lowest number is 1, then the possible highest numbers are 4 and 5 (4 + 3 = 7 but the sequence only goes up to 4 so the highest should be 5). Therefore, the possible values of h are either 10 or 11.

Therefore, the correct answer is B. 11.

Answer:

the triangle arereflected across the line y=x

The given parallelogram is not a rectangle.

One of the tests for a rectangle is if a right angled triangle can be created by diagonally dividing the rectangle .

The test for a right - angled triangle is the Pythagorean Theorem which is :

Side ² + Side ² = Hypotenuse ²

Using, the dimensions, check to see if there is a right triangle :

7. 2 ² + 9. 1 ² = 12 ²

134. 65 ≠ 144

There is no right angled triangle so this is a parallelogram that is not a rectangle .

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Answer:

A

Step-by-step explanation:

it is a bar graph because it involves class interval

No, any court case should not be based solely on probabilities as probability does not imply certainty.

Compute the probability of another couple being in that area with the same characteristics

CHARACTERISTIC ASSUMED PROBABILITY

Drives a yellow car 1 out of 12

Man over 6 feet tall 1 /10

Man wearing tennis shoes 1/4

Man with beard 1/11

Woman with blond hair 1/3

Woman with hair in a ponytail 1 /13

Women over 6 feet tall 1/100

We will use the multiplication rule as all the characteristics should be present in the couple.

The probability of another couple being in that area with the same characteristics is given as

P(Drives a yellow car) x P(Man with beard) x P(Woman with blond hair) x P(Woman with hair in a ponytail) x P(Woman over 6 feet tall) = 1/12 x 1/11 x 1/3 x 1/13 x 1/100 = 1/514800

The characteristics dependent on the sum of the probabilities is not equal to 1.

The assumption of independence would lead to use of the addition rule instead of the multiplication rule, and hence the probability would change (the probability would increase).

No, any court case should not be based solely on probabilities as probability does not imply certainty.

No, the couple who was arrested should not be convicted if there were no eyewitnesses as probability does not imply certainty.

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After answering the presented question, we may conclude that  the solution of the expressions are as follows.

In mathematics, you can multiply, divide, add, or subtract. An expression is constructed as follows: Number, expression, and mathematical operator A mathematical expression (such as addition, subtraction, multiplication, or division) is made up of numbers, variables, and functions. It is possible to contrast expressions and phrases. An expression or algebraic expression is any mathematical statement that has variables, integers, and an arithmetic operation between them. For example, the phrase 4m + 5 has the terms 4m and 5, as well as the provided expression's variable m, all separated by the arithmetic sign +.

the solution of the expressions are as follows -

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The probability that either event will occur is 0.68

From the question, we have the following parameters that can be used in our computation:

The Venn diagram

On the Venn diagram, we have

Total = 15 + 12 + 18 + 12 - 12 + 21

Evaluate

Total = 66

This means that

P(A) = (15 + 12)/66

P(A) = 27/66

Also, we have

P(B) = (18 + 12)/66

P(B) = 30/66

Using the formula of the OR rule of probability:

P(A or B)=P(A) + P(B) - P(A and B)

Substitute the known values in the above equation, so, we have the following representation

P(A or B) = 27/66 + 30/66 - 12/66

Evaluate

P(A or B) = 45/66

This gives

P(A or B) = 0.68

Hence, the solution is 0.68

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Using the Pythagorean theorem, we can find the length of HG:

HG² = HI² + IG²

Therefore, the length of HG is 5sqrt(3) units.

The Pythagorean Theorem is a mathematical formula that states in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Length is a measurement of the extent of something along its longest dimension, from one end to the other. It is often expressed in units such as meters, feet, or inches.

According to the given information:

To calculate the length of HG, we can use the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of its two legs.

First, we can identify that triangle HGN is a right triangle, with HG being the hypotenuse. Using the Pythagorean theorem, we have:

(HG)² = (NG)² + (NH)²

We can also identify that triangle INH is also a right triangle, with IN being the hypotenuse. Using the Pythagorean theorem, we have:

(IN)² = (NH)² + (NI)²

Substituting (NH)^2 from the second equation into the first equation, we get:

(HG)² = (NG)² + (IN)² - (NI)²

Plugging in the values given in the diagram, we get:

(HG)² = 5² + 9² - 3²

(HG)² = 61

HG = √61

Therefore, the length of HG is the square root of 61.

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Answer:

1:2

Step-by-step explanation:

The constant of proportionality of the equation would be = 12.80.

The constant of proportionality of an equation is the figure that represents the ratio that exists between two different variables that has direct proportional relationship.

The amount of money made by an employee is directly proportional to the number of hours they worked.

That is m directly proportional to h

The equation = m = k h. where k = 12.80 = constant of proportionality.

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Answer:

9 : 7

Step-by-step explanation:

4.5 : 3.5 are decimals so we can multiply them both by 2 to get whole numbers. 4.5 doubled is 9 and 3.5 doubles is 7. Therefore the ratio becomes 9:7

If  an ethanol railroad tariff is a fee charged for shipments of ethanol on public railroads. The  probability is:  84.6%.

In this case, we have:

Population standard deviation (σ): $1200

Sample size (n): 400

Margin of error (E): $80

The standard deviation of the sample mean can be calculated as:

σM = σ / √n = 1200 / √400 = 60

To find the probability that the sample mean is within $80 of the population mean, we need to find the z-scores for the upper and lower limits of the interval:

Lower limit: z = (mean - E - population mean) / σM = (-80) / 60 = -1.3333

Upper limit: z = (mean + E - population mean) / σM = 80 / 60 = 1.3333

Using a standard normal distribution table or calculator, we can find the area under the curve between these two z-scores:

P(-1.3333 < Z < 1.3333) = 0.8461

Therefore, the probability that the mean tariff rate of 400 randomly selected railroad-car shipments of ethanol will be within $80 of the mean tariff rate of all railroad-car shipments of ethanol is approximately 0.846 or 84.6%.

Interpretation: This means that if we take many samples of 400 railroad-car shipments of ethanol and calculate their mean tariff rates, about 84.6% of these means will be within $80 of the true mean tariff rate of all ethanol shipments. This also means that there is a sampling error of $80, which is the maximum amount by which the sample mean may differ from the population mean due to random sampling variability.

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Therefore , the solution of the given problem of mean comes out to be $1055 is more expensive than $1020 it increases by.

The total of all values variable divided by all of the values constitutes the outcome of a collection, sometimes referred to as the arithmetic mean. It's one of the key trend indicators that's utilised the most and is typically referred as the "mean." To obtain the answer, multiply the collection's overall number of numbers by each value. Either the raw data or information that has been combined into frequency charts can be used for calculations.

Here,

The average rent is determined by adding up all the rents and dividing by the total number of rents.

This is known as the mean.

Given that the person's rent increased by

=>$150, $1055 - $905 = $150.

The entire sum of all rentals would therefore rise, but the overall number of rents would stay the same at 10.

The mean would therefore rise by

=> $150/10

=> $15.

(b) The median rent at the moment is $1020 because the rents are already arranged from lowest to highest.

The new median would be the middle value of the revised list, which would include the new price of $1055,

if one person's rent increased from $905 to $1055.

The median would rise given that $1055 is more expensive than $1020.

Thus , it increases by.

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