Zhang walks in a straight line from the trail head at (0,0). He travels at an average rate of 3 mi/h in the direction 30° west of north. What are the coordinates of Zhang's location, relative to the trail head, after 4 hours?

​

There are 173 kinda-prime positive integer less than 1000.

To find the number of kinda-prime positive integer less than 1000, we'll follow these steps:

1. Understand the definition of a kinda-prime number: A positive integer is kinda-prime if it has a prime number of positive integer divisors.
2. Determine the number of prime numbers less than 1000: There are 168 prime numbers less than 1000, as given.
3. Determine the possible prime number of divisors: Since 168 is not too large, we only need to consider 2 and 3 as possible prime numbers of divisors for a kinda-prime number.
4. Analyze the cases:

Case 1: Kinda-prime numbers with 2 divisors (prime numbers)
All prime numbers have exactly 2 divisors (1 and itself). Thus, all 168 prime numbers less than 1000 are kinda-prime.

Case 2: Kinda-prime numbers with 3 divisors
Let N be a kinda-prime number with 3 divisors. Then, N = p^2 for some prime number p. To find the suitable prime numbers p, we need[tex]p^2 < 1000[/tex]. The prime numbers that meet this condition are 2, 3, 5, 7, and 11 (since 13^2 = 169 > 1000). Therefore, there are 5 additional kinda-prime numbers ([tex]2^2, 3^2, 5^2, 7^2, and 11^2[/tex]).

5. Add the total number of kinda-prime numbers from both cases: 168 + 5 = 173.

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[tex]$(\pi(1000)-1)+11=\boxed{177}$[/tex] "kind a-prime" positive integers less than $1000$.

Let [tex]$n$[/tex] be a positive integer with[tex]$k$[/tex] positive integer divisors.

If [tex]$k$[/tex] is prime, then.

[tex]$n$[/tex] is a "kind a-prime" integer.

[tex]$k$[/tex] must be of the form.

[tex]$k=p$[/tex] or [tex]$k=p^2$[/tex] for some prime [tex]$p$[/tex].

If [tex]$k=p$[/tex], then [tex]$n$[/tex] must be of the form.

[tex]$p^{p-1}$[/tex] for some prime [tex]$p$[/tex]. Since [tex]$p < 1000$[/tex], there are.

[tex]$\pi(1000)$[/tex]possible values of [tex]$p$[/tex].

[tex]$p=2$[/tex] gives [tex]$2^1$[/tex], which is not prime, so we have to subtract.

[tex]$1$[/tex] from [tex]$\pi(1000)$[/tex] to get the number of possible.

[tex]$p$[/tex].

[tex]$\pi(1000)-1$[/tex] values of [tex]$p$[/tex] that give a "kind a-prime" integer of this form.

If [tex]$k=p^2$[/tex], then [tex]$n$[/tex] must be of the form.

[tex]$p^{p^2-1}$[/tex] for some prime[tex]$p$[/tex].

There are.

[tex]$\pi(31)=11$[/tex] primes less than [tex]$31$[/tex], and each of them gives a different "kind a-prime" integer of this form.

Since [tex]$31^5 > 1000$[/tex], no primes larger than [tex]$31$[/tex]can be used to form a "kind a-prime" integer of this form.

[tex]$11$[/tex] possible values of [tex]$p$[/tex] that give a "kind a-prime" integer of this form.

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Answer: We can use a proportion to estimate the total number of fur seal pups in Rookery A. Let x be the total number of fur seal pups in Rookery A. Then we have:

6269/x = 221/1100

Cross-multiplying, we get:

221x = 6269 * 1100

Dividing both sides by 221, we get:

x = 6269 * 1100 / 221

Simplifying, we get:

x = 31,245.25

Rounding to the nearest whole number, we get:

x ≈ 31,245

Therefore, the estimated total number of fur seal pups in Rookery A is 31,245.

Step-by-step explanation:

Answer:

236 cm^2  and  8 cm

Step-by-step explanation:

width=w

240=6(5)(w)

w=8 cm

area=2[(6)(5)+(6)(8)+(5)(8)]

area=236 cm^2

We can use the trigonometric identity for the sine of a difference:

sin(a - B) = sin a cos B - cos a sin B

We are given that sina = -3 and sinß = 3, so we need to find the cosine of each angle. Since the terminal side of a lies in quadrant III and the terminal side of 6 lies in quadrant I, we can use the following relationships:

cos a = -sqrt(1 - sin^2 a) = -sqrt(1 - 9) = -sqrt(-8) = sqrt(8)i

cos ß = sqrt(1 - sin^2 ß) = sqrt(1 - 9) = sqrt(-8) = sqrt(8)i

Note that we use i to indicate the imaginary unit, since the result involves a negative square root. Therefore, we have:

sin(a - B) = sin a cos ß - cos a sin ß

= (-3)(sqrt(8)i) - (sqrt(8)i)(3)

= -3sqrt(8)i - 3sqrt(8)i

= -6sqrt(8)i

Hence, the exact value of sin(a - B) is -6sqrt(8)i.

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The exact value of sin(a - B) if sina = -3 and sinß = 3, and the terminal side of a lies in quadrant III and the terminal side of 6 lies in quadrant  is sin(a - B) =0

We apply the trigonometric identity for the sine of a difference:

sin(a - B) = sin(a)cos(B) - cos(a)sin(B)

We use Pythagorean identity to find the cosine values:

cos^2(a) = 1 - sin^2(a) = 1 - (-3)^2 = -8

cos(a) = ±√8i

cos(a) = -√8 (Since a lies in quadrant III, the cosine value is negative.)

we also have that:

cos^2(B) = 1 - sin^2(B) = 1 - 3^2 = -8

cos(B) = ±√8i

cos(B) = √8. (Since B lies in quadrant I, the cosine value is positive. )

we then substitute these values into the formula for sin(a - B):

sin(a - B) = sin(a)cos(B) - cos(a)sin(B)

= (-3)(√8) - (-√8)(3)

= -3√8 + 3√8

= 0

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Answer:

a) model a: 50/hr

model b: 40/hr

b) model a

Step-by-step explanation:

b) since the money raised started at 0, the rate of change can be found by calculating 400/8

the probability that an American man is 69.8 inches or taller is 0.5 (or 50%).

To solve this problem, we can use the properties of the normal distribution and the standard normal distribution.

First, we need to standardize the variable (the height of men) to a standard normal variable (with a mean of 0 and a standard deviation of 1). We can do this using the formula:

[tex]z = (x - mu) / sigma[/tex]

where z is the standard normal variable, x is the original variable, mu is the mean of the original variable, and sigma is the standard deviation of the original variable.

In this case, we want to find the probability that an American man is 69.8 inches or taller. So we need to calculate the z-score for x = 69.8:

[tex]z = (69.8 - 69.8) / 3.5 = 0[/tex]

The z-score is 0 because 69.8 is equal to the mean of the distribution.

Next, we can use a standard normal distribution table (or a calculator with a normal distribution function) to find the probability that a standard normal variable is less than or equal to 0. We can also use the fact that the area under the standard normal curve is 1.

Using a standard normal distribution table, we find that the probability that a standard normal variable is less than or equal to 0 is 0.5.

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The  closest possible  choice is 198.06 ft².

Option C is correct.

The area of the base is gotten as :

length x width = 8 ft x 7 ft = 56 ft².

The length of the pyramid's slant height (s) must be determined in order to determine the area of each triangle face.

We may determine that s = (h2 + (w/2)2) = (62 + (7/2)2) = (36 + 24.5) = 60.5 7.78 ft using the Pythagorean theorem.

The area of each triangular face is

(1/2) x base x height = (1/2) x 8 ft x 7.78 ft

= 31.12 ft².

Hence, the total surface area of the pyramid :

56 ft² + 4 x 31.12 ft² = 192.48 ft².

In conclusion, the closest possible  choice is 198.06 ft².

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This parallelogram is a rhombus.

Using the characteristics of parallelograms, we can establish what kind of parallelogram this is. In addition to having opposite sides that are parallel and congruent, parallelograms also have opposite angles that are congruent.

The distance formula can be used to get the length of each side of the parallelogram first.

A = 5, B = 5, C = 5, D = 5, etc.

As all the sides are identical in length, we know that this object is a rhombus.

The slopes of the lines comprising the opposing sides of the parallelogram can also be determined in a different way:

AB's slope is (8-3)/(2-2) = undefined.

CD's slope is (3-8)/(7-7) = undefined.

BC has a slope of 0 (8-8)/(7-2)

AD slope is equal to 0 (3-3)/(7-2)

The slopes of opposing sides can be seen to be both undefinable or zero, suggesting that they are parallel. Moreover, this is a rhombus because the opposing sides are the same length.

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Being 90% confident in a problem means that there is a 90% chance that the confidence interval calculated from a sample contains the true population mean.

In other words, if we take 100 different samples of the same size from the population and calculate a confidence interval for each sample, then we can expect that 90 of those intervals will contain the true population mean.

This is the definition of a confidence level. Therefore, we can say that there is a 90% chance that the confidence interval we have calculated includes the true population mean.

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Answer:4/3

Step-by-step explanation:start by converting the mixed numbers to improper fractions to make the subtraction easier:

5⅔ cups of cereal = 17/3 cups of cereal

4⅓ cups of marshmallows = 13/3 cups of marshmallows

Now subtract the amount of marshmal ows from the amount of cereal: 4/3 of a cup

Answer:

1  1/3

Step-by-step explanation:

so first you must take the 5 2/3 and subtract if from the 4 1/3 which gives:

1  1/3

The constant ratio in each representation include the following: r = 3.

In Mathematics, the nth term of a geometric sequence can be calculated by using this mathematical expression:

aₙ = a₁rⁿ⁻¹

Where:

Next, we would determine the common ratio in each representation as follows;

Common ratio, r = a₂/a₁

Common ratio, r = -6/-2 = -18/-6

Common ratio, r = 3.

Based on comparison with the exponential equation, the common ratio is given by;

Common ratio, r = 3.

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The exponential equation in an equivalent logarithmic form in order to solve for t is t = 4 * log(base 2) (P/270)

To write the exponential equation P = 270(2)^(t/4) in logarithmic form, we can use the following property of logarithms:

log(base a) (x^y) = y*log(base a) (x)

Applying this property to the given equation, we get:

log(base 2) (P/270) = t/4

This is the logarithmic equivalent of the exponential equation. It relates the time t to the average price P of an ounce of gold since 2003.

To solve for t, we can isolate it on one side of the equation:

t = 4 * log(base 2) (P/270)

This formula gives the time t since 2003 (in years) corresponding to a given average price P of an ounce of gold.

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The proportionality constant that relates the distance traveled by Olivia to time is 34/13, or approximately 2.615.

The constant of proportionality is related to the distance Olivia travels and the time it takes to travel that distance. You can find it by dividing the distance by the time.

constant of proportionality = distance / time = 34 miles / 13 hours

This division can be simplified by partitioning both the numerator and denominator by their most prominent common divisor, 1.

 constant of proportionality = 34/13

Therefore, the proportionality constant that relates the distance traveled by Olivia to time is 34/13, or approximately 2.615 (rounded to three decimal places).  

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There are 35 possible trip choices available to Amy. The solution has been obtained by using the concept of combination.

What is combination?

A combination in mathematics is a choice made from a group of separate elements where the order of the selection is irrelevant.

We are given that there are seven different places and from that she can afford only three. Since, here order does not matter so, we will use combinations as in combination order of the selection is irrelevant.

From this, we get

⇒ [tex]^{7} C_{3}[/tex] = [tex]\frac{7!}{3!(7-3)!}[/tex]

⇒ [tex]^{7} C_{3}[/tex] = 35

Total possible trips = 35

Hence, Amy has total of 35 possible trip choices.

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If 54 oranges cost 36 naira, then the cost of 3 oranges​ is 2 naira

Unitary method is a method of solving problems by finding the value of one unit and then using that value to find the value of a given number of units

To find the cost of 3 oranges, we can use unitary method which involves finding the cost of one orange and then multiplying it by 3.

Let's first find the cost of one orange

54 oranges cost 36 naira

So, 1 orange will cost:

1/54 of 36 naira = (36/54) naira = (2/3) naira

Now, we can find the cost of 3 oranges by multiplying the cost of one orange by 3

Cost of 3 oranges = 3 x (2/3) naira = 2 naira

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Answer:

Step-by-step explanation:

 Sin = Opposite/Hypotenuse

(5,164) x sin (4°) =

5164 x .0698 ≈ 360.4472

Round to nearest foot ≈  360'

If you choose not to make a payment during the 24-month period, your balance at the end of the promotion will be $3,637.16.

Explain month

A month is a unit of time equal to one-twelfth of a year, or approximately 30.44 days. It is often used to represent periodic phenomena, such as interest rates or seasonal trends, and to calculate the duration between two dates. The number of months between two dates is calculated by dividing the difference in days by 30.44.

According to the given information

If you do not make any payments during the 24-month period, your balance will increase each month due to the interest that accrues. After 24 months, your balance will be:

$2299.99 * (1 + 0.020825)²⁴ = $3,637.16

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The radius of the base of the cone can be found by dividing the circumference by 2π:

radius = (8.5π)/(2π) = 4.25 inches

Using the formula for the volume of a cone, V = (1/3)πr^2h, we can substitute the values we know:

V = (1/3)π(4.25^2)(15) ≈ 270.62 cubic inches

Rounding to the nearest hundredth, the volume of the cone in terms of π is approximately 270.62π cubic inches.

As per the unitary method, the list shows the number of each type of animal on this farm is

Number of pigs = x

Number of horses = 2x

Number of cows = 8x

Let us start by assigning variables to each type of animal on the farm. Let's say the number of pigs is "x".

From the problem statement, we know that there are twice as many horses as pigs. Therefore, the number of horses would be 2x.

Further, we know that there are four times as many cows as horses. So, the number of cows would be 4 times the number of horses. Mathematically, we can represent it as:

Number of cows = 4 * Number of horses

Or, Number of cows = 4 * (2x) = 8x

Therefore, we have the number of each type of animal on the farm as follows:

Number of pigs = x

Number of horses = 2x

Number of cows = 8x

This is the same ratio as we found using the unitary method.

Therefore, our solution is correct.

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There are 302,702,400 possible baseball teams of nine that can be formed with three designated pitchers and 12 multitalented players who can play any of the remaining positions.

Since three players are designated as pitchers, we need to choose three players out of the total 15 players on the team. This can be done in C(15, 3) ways, where C(n, r) represents the number of combinations of r objects selected from a set of n objects.

For the remaining six positions, any of the 12 multitalented players can be assigned to any of the positions, which means that there are 12 choices for the first position, 11 choices for the second position, and so on, down to 7 choices for the sixth position.

Therefore, the total number of baseball teams of nine that can be formed is:

C(15, 3) x 12 x 11 x 10 x 9 x 8 x 7

which simplifies to:

(15 x 14 x 13 / 3 x 2 x 1) x (12 x 11 x 10 x 9 x 8 x 7)

= 455 x 665,280

= 302,702,400

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The value of cos ( 90 - x ), given the side lengths of the right triangle would be B. 3 / 5.

In a right triangle, the sum of the two acute angles is always 90 degrees. If we have a right triangle with side lengths 3, 4, and 5, then it's a 3-4-5 Pythagorean triple, which means the angles are also in a specific ratio.

Now, we want to find cos(90 - x). Since the sum of the two acute angles in a right triangle is 90 degrees, the other angle in the triangle is (90 - x). We know that sin x = opposite / hypotenuse, so in our triangle, sin(90 - x) = 3/5.

The sine and cosine of complementary angles are related by the co-function identity:

cos(90 - x) = sin x

So, cos(90 - x) = sin(90 - x) = 3/5.

The answer is 3/5.

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The point of tangency is (-3, -2).

To find the point of  tangency , we really want to find the convergence point between the line and the circle. We can begin by tracking down the situation of the circle with focus (- 1,2).

A circle's equation for its center (a,b) and radius (r) is as follows:

[tex](x - a)^2 + (y - b)^2 = r^2[/tex]

Plugging in the values for the center and solving for r, we get:

[tex](x + 1)^2 + (y - 2)^2 = r^2[/tex]

Now we need to find the intersection point between this circle and the line 2x+3y=-22. We can do this by substituting y = (-2/3)x - (22/3) into the equation of the circle:

[tex](x + 1)^2 + ((-2/3)x - (16/3))^2 = r^2[/tex]

Expanding and simplifying, we get:

[tex]10x^2 + 24x + 44 = 9r^2[/tex]

Next, we can make use of the fact that the line intersects the circle at a tangent. This indicates that the distance between the intersection point and the center of the circle is the same as its radius. The distance between the center of the circle and the line can be determined using the distance formula:

distance = [tex]|2x + 3y - (-22)\sqrt{2^2 + 3^2}| = |2x + 3y + 22| \sqrt(13)[/tex]

Setting this equal to the radius r, we get:

[tex]|2x + 3y + 22| \sqrt{13} = \sqrt{10x^2 + 24x + 44} / 3[/tex]

Squaring both sides and simplifying, we get:

[tex]36(2x + 3y + 22)^2 = 13(10x^2 + 24x + 44)[/tex]

Expanding and simplifying, we get:

[tex]26x^2 + 36xy + 45y^2 + 52x + 132y + 240 = 0[/tex]

Now we can use the quadratic formula to solve for x:

x = (-18y - 13 ± [tex]\sqrt{169 - 720y^2[/tex])) / 13

Substituting this into the equation for the line, we get:

2(-18y - 13 ± [tex]\sqrt{169 - 720y^2))[/tex] / 13 + 3y = -22

Simplifying, we get:

y = -2

Substituting y = -2 into the equation for x, we get:

x = -3

Therefore, the point of tangency is (-3, -2).

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A survey is taken at a movie theater in Wayside. The first 200 people who entered the theater were asked about their favorite type of movie. The true about this situation is: The population is the total number of people who go to the movie theater, and the sample is the first 200 people at the theater.

In this situation, the population refers to the entire group of people who go to the movie theater in Wayside. The population includes all individuals who have the potential to be surveyed about their favorite type of movie.

The sample, on the other hand, is a subset of the population and represents the first 200 people who entered the theater. These 200 individuals are selected to provide information about the preferences of the larger population.

It is important to note that the sample is not the entire population but rather a smaller representative group. By surveying the sample, we aim to gather insights and make inferences about the preferences of the larger population of moviegoers in Wayside.

The correct answer is: The population is the total number of people who go to the movie theater, and the sample is the first 200 people at the theater.

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Answer:

I think I had a 6 streak going on but I blew it yesterday

Step-by-step explanation:

Answer:

My answer streak is 20. Sorry I’m new

The p-value is greater than 0.05, the researcher would fail to reject the null hypothesis and conclude that there is not enough evidence to support the claim that the average number of sick days taken per year by workers is greater than 5.

It appears that some values are missing in your question, specifically the sample mean and the population standard deviation.

Without these values, I cannot provide a complete answer to your question.

A general idea of how to approach this type of hypothesis test.

To test whether the average number of sick days a worker takes per year is greater than 5, the researcher would need to set up the following hypotheses:

Null hypothesis (H0):

The average number of sick days taken per year by workers is equal to or less than 5.

Alternative hypothesis (Ha):

The average number of sick days taken per year by workers is greater than 5.

The next step would be to collect a random sample of workers and calculate their sample mean and sample standard deviation.

Based on these values, the researcher would then calculate the t-value using the formula:

t = (sample mean - hypothesized population mean) / (sample standard deviation / sqrt(sample size))

The hypothesized population mean in this case is 5, the sample size is 28, and the sample mean and sample standard deviation would be substituted in.

Once the t-value is calculated, the researcher would then use a t-distribution table to find the corresponding p-value based on the degrees of freedom (sample size minus 1) and the level of significance (0.05).

If the p-value is less than 0.05, the researcher would reject the null hypothesis and conclude that there is enough evidence to support the claim that the average number of sick days taken per year by workers is greater than 5.

The specific critical t-value would be based on the degrees of freedom and level of significance.

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To determine if each ordered pair is a point of intersection between the line x - y = 6 and the circle y² - 26 = -x², we need to substitute the values of x and y in both equations and see if they are true for both.

For the ordered pair (1, -5):

x - y = 6 becomes 1 - (-5) = 6, which is true.

y² - 26 = -x² becomes (-5)² - 26 = -(1)², which is false.

Therefore, (1, -5) is not a point of intersection.

For the ordered pair (1, 5):

x - y = 6 becomes 1 - 5 = -4, which is false.

y² - 26 = -x² becomes (5)² - 26 = -(1)², which is true.

Therefore, (1, 5) is a point of intersection.

For the ordered pair (5, -1):

x - y = 6 becomes 5 - (-1) = 6, which is true.

y² - 26 = -x² becomes (-1)² - 26 = -(5)², which is false.

Therefore, (5, -1) is not a point of intersection.

So the answer is:

(1,-5) - No

(1,5) - Yes

(5,-1) - No

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Answer: -37.5

Step-by-step explanation: You can simply do this in the calculator by doing 3 times -12.5. the parenthesis is a sign to multiply

Answer:

the answer is -75/2= - 37.5

We verified that the associative property of addition holds for the given expression below

Let's verify the associative property of addition for the given expression:

2/3 + (3/4 + 1/5) = (2/3 + 3/4) + 1/5

We can simplify both sides of the equation by finding a common denominator for the fractions:

2/3 + (3/4 + 1/5) = (2/3 + 3/4) + 1/5

Multiplying 2/3 by 20/20, we get:

40/60 + (3/4 + 1/5) = (2/3 + 3/4) + 1/5

Multiplying 3/4 by 15/15, we get:

40/60 + 45/60 + 1/5 = (2/3 + 3/4) + 1/5

Combining the first two terms on the left-hand side, we get:

85/60 + 1/5 = (2/3 + 3/4) + 1/5

Simplifying the fraction 85/60, we get:

17/12 + 1/5 = (2/3 + 3/4) + 1/5

Multiplying 2/3 by 4/4, we get:

17/12 + 1/5 = (8/12 + 9/12) + 1/5

Combining the fractions in the parentheses, we get:

17/12 + 1/5 = 17/12 + 1/5

Since both sides of the equation are equal, we have verified that the associative property of addition holds for the given expression:

2/3 + (3/4 + 1/5) = (2/3 + 3/4) + 1/5.

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The ratio of the weight to the mass and the value of x in the table is B) The ratio is 10/98, x = 110.

The quantity of matter in an object is measured by its mass, which is commonly expressed in kilogrammes or grammes. Since mass is a scalar quantity, the gravitational field has no effect on it. The force of gravity acting on an object is quantified by weight, which is commonly expressed in newtons or pounds. Weight is a vector quantity that is influenced by the strength of the gravitational field. While an object's mass is constant, its weight might vary depending on the gravitational field.

The ratio of weight to mass according to the given table is:

weight / mass = 196 / 20 = 98/10

The ratio is constant thus for x we have:

1078 / x = 98 / 10

Using cross multiplication we have:

x = 1078 (10) / 98 = 110

Hence, the ratio of the weight to the mass and the value of x in the table is B) The ratio is 10/98, x = 110.

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The complete question is:

Answer:

Total=$90

Used=$40

Left=($90-$40)=$50

1 carton = $4.49

$50÷$4.49

=11.135857 ≈ $11 10¢