If the cost of 8 chocolates is 216 find the cost of 1 chocolates

Answer:27/40

Step-by-step explanation:

7/8-1/5  

35/40-8/40=27/40

The table which  represents a quadratic relationship is in option \(D\).

A quadratic relationship is a mathematical relation between two variables that follows the form of a quadratic equation.

Quadratic sequence \(=an^2 +bn+c\)

So, According to the definition mentioned above if table follows the  form of a quadratic equation then it is in quadratic relationship.

So,

To find out quadratic relationship,

We will find first difference in every table and then second difference (Second difference is the difference between the first difference).

We have,

Table A;

\(\left \begin{array}{ccccc}x& \ &f(x)&First\ Difference & Second\ Difference \\-2& &4&2-4=-2\\-1& &2&1-2=-1&-1+2=1\\0& \ &1&0.5-1=-0.5&-0.5+1=0.5\\1& &0.5&0.25-0.5=-0.25&-0.25+0.5=0.25\\2& &0.25&0.125-0.25=-0.125\\3& &0.125\end{array}\right\)

So, In the above table we can see that second difference  is not equal that means it is not in quadratic relationship.

Now,

Let Table D;

\(\left \begin{array}{ccccc}x& \ &f(x)&First\ Difference & Second\ Difference \\-2& &-23.4&\\-1& &-23.2&-23.2+23.4=-0.2&0.2-0.2=0\\0& \ &-23&-23+23.2=-0.2&0.2-0.2=0\\1& &-22.8&-22.8+23=-0.2&0.2-0.2=0\\2& &-22.6&-22.6+22.8=-0.2\\3& &-22.4&-22.4+22.6=-0.2\end{array}\right\)

So, here in this table, we can see that second difference  is equal that means it is in quadratic relationship.

Hence, we can say that the table which  represents a quadratic relationship is in option \(D\).

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Let w be the weight on point s. Since the sum of the weights is 1, the weight on point t is 0.625, we can write:

w + 0.625 = 1

Subtracting 0.625 from both sides, we get:

w = 1 - 0.625 = 0.375

Therefore, the weight on point s is 0.375.

Answer:

X=0,y=-5

x=4,y=-1

Step-by-step explanation:

Replace all occurrences of y with x^2-3x-5

(x^2-3x-5)+5=x

x^2-3x=x

X^2-4x=0

so :x=0,4

enter the value of x in the equation then find y

y=-5,-1

Answer:

48

Step-by-step explanation:

3x2^2x4=48

Answer:

48

Step-by-step explanation:

Answer:

2/9

Step-by-step explanation:

set: 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18 (18 numbers)

factors of 6: 1,2,3,6 (4 numbers)

probabilty that the number is a factor of 6: 4/18 = 2/9

\((21a^6b^5) / (7a^3b)\) simplifies to \(3a^3b^4.\)

We can use the rules of exponents and simplify the terms with the same base.

Dividing the coefficients: 21 / 7 = 3.

For the variables, you subtract the exponents: \(a^6 / a^3 = a^(^6^-^3^) = a^3.\)

Similarly,\(b^5 / b = b^(5-1) = b^4\).

Putting it all together, the simplified expression is:

\(3a^3b^4.\)

Therefore, \((21a^6b^5) / (7a^3b)\) simplifies to \(3a^3b^4.\)

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Using the z-score, mean and sample mean, the standard deviation of the sample is 7.57

A z-score describes the position of a raw score in terms of its distance from the mean when measured in standard deviation units. The z-score is positive if the value lies above the mean and negative if it lies below the mean.

The formula is given as;

z = x - μ / σ

Substituting the values into the formula;

-2.13 = 19.3 - 29 / σ

Cross multiply both sides;

-2.13σ = 19.3 - 29

-2.13σ = -9.7

Divide both sides by the coefficient;

-2.13σ / -2.13 = -9.7 / -2.13

σ = 7.57

The standard deviation is 7.57

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The domain of the square root function is x greater-than-or-equal-to 0, since the function is defined for all non-negative x-values or x-values greater than or equal to zero.

The domain of the square root function graphed below can be determined by looking at the x-values of the points on the graph.

From the given information, we can see that the curve starts at (0, -1) and goes through (1, -2) and (4, -3).

The x-values of these points are 0, 1, and 4.

Since the square root function is defined for any non-negative x-values or x-values more than or equal to zero, its domain is x greater-than-or-equal-to 0.

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Answer: 3

Step-by-step explanation:

Given: A sample of 100 production workers is obtained. The workers are classified by gender (male, female) and by age (under 20, 20−29, 30−39, and 40 or over).

Here,

Total classes as per gender: k = 2 (male female)

Total classes as per age : m = 4  (under 20, 20−29, 30−39, and 40 or over)

Now , the degree of freedom = (k-1) ( m-1)

=  (2-1) (4-1)

= (1)(3)

= 3

Hence, there are 3 degree of freedom.

Answer:

To find the rules for (fg)(x) and (gf)(x), we need to evaluate the composite functions.

(fg)(x) = f(g(x)) = f(sqrt(x - 5)) = (sqrt(x - 5))^2 + 5 = x - 5 + 5 = x

(gf)(x) = g(f(x)) = g(x^2 + 5) = sqrt(x^2 + 5 - 5) = sqrt(x^2) = |x|

Therefore, the rules for (fg)(x) and (gf)(x) are:

(fg)(x) = x

(gf)(x) = |x|

Step-by-step explanation:

Answer:

3xy

Step-by-step explanation:

Answer10:

Step-by-step explanation:

10

The volume of sphere is 113.143 cube inches, the volume of cylinder is 169.714 cube inches and the volume of cone is 56.571 cube inches. The relation of three volume is "Volume of cylinder = Volume of sphere + Volume of Cone".

In the given question,

We have to calculate the volume of the shapes with the given information.

Sphere with a diameter of 6 inches.

Cylinder with a height of 6 inches and a diameter of 6 inches.

Cone with a height of 6 inches and a radius of 3 inches.

We also find that how these three volumes are related.

We find the volume of shapes one by one.

Firstly we find the volume of sphere with a diameter of 6 inches.

We know that the formula of sphere

\(V_{S}=\frac{4}{3}\pi r^3\)

where \(V_{S}\) = Volume of sphere

r = radius of sphere

But we know the value of diameter.

We know that radius = diameter/2

So radius(r) = 6/2

radius(r) = 3

\(\pi = \frac{22}{7}\)

Now putting the values in the formula

\(V_{S}=\frac{4}{3}\times\frac{22}{7}\times (3)^3\)

Simplifying

\(V_{S}=\frac{4}{3}\times\frac{22}{7}\times 27\)

\(V_{S}=\frac{2376}{21}\)

\(V_{S}\) = 113.143

Hence, the volume of sphere is 113.143 cube inches

Now we find the volume of Cylinder with a height of 6 inches and a diameter of 6 inches.

We know that the formula of Cylinder

\(V_{CY}=\pi r^2h\)

where \(V_{CY}\) = Volume of Cylinder

r = radius of cylinder

h = height of Cylinder

From the question we know h = 6 inches

Diameter = 6 inches

We know that radius = diameter/2

So radius(r) = 6/2

radius(r) = 3

\(\pi = \frac{22}{7}\)

Now putting the values in the formula.

\(V_{CY}=\frac{22}{7}\times (3)^2\times6\)

\(V_{CY}=\frac{22}{7}\times 9\times6\)

\(V_{CY}=\)1188/7

\(V_{CY}=\)169.714

Hence, the volume of cylinder is 169.714 cube inches.

Now we find the volume of Cone with a height of 6 inches and a radius of 3 inches.

We know that the formula of Cone

\(V_{C}=\frac{1}{3}\pi r^2h\)

where \(V_{C}\) = Volume of Cone

r = radius of cone

h = height of Cone

From the question we know height(h) = 6 inches

radius(r) = 3 inches

\(\pi = \frac{22}{7}\)

Now putting the values in the formula.

\(V_{C}=\frac{1}{3}\times\frac{22}{7}\times (3)^2\times6\)

\(V_{C}=\frac{1}{3}\times\frac{22}{7}\times 9\times6\)

\(V_{C}\) = 1188/21

\(V_{C}\) = 56.571

Hence, the volume of cone is 56.571 cube inches.

Now we finding the relation of three volumes related.

Volume of cylinder = Volume of sphere + Volume of Cone

169.714 = 113.143 + 56.571

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Answer:

¿Cuál es la probabilidad de aprobar un examen al azar?

Resultado de imagen para ¿Cuál es la probabilidad de adivinar correctamente al azar exactamente una respuesta correcta?

La probabilidad de acertar respondiendo al azar una pregunta es de una entre cuatro: 1/4 = 0.25. Normalmente decimos un 25% de probabilidad de acertar. La probabilidad de fallar sería tres entre cuatro: 3/4 = 0.75. O sea un 75%.

Step-by-step explanation:

this is the best ✔️ 5+(2-3)49_.56837659=0-9

Step-by-step explanation:

0 upto 9

Answer:

68% of the data points lie between 10 and 18.

Step-by-step explanation:

one standard deviation to left of mean = 14 - 4 =10

one standard deviation to right of mean = 14 + 4 = 18

68% of data is in this region.

so the answer is 68% of the data points lie between 10 and 18.

Answer:

72ft²

Step-by-step explanation:

Calculate the area of each face and then sum them.

area of base = 4 × 5 = 20 ft²

area of back = 5 × 3 = 15 ft²

area of sloping face = 5 × 5 = 25 ft²

area of 2 triangular faces = 2 ×  × 4 × 3 = 4 × 3 = 12 ft²

Thus

surface area = 20 + 15 + 25 + 12 = 72 ft²

Answer:

a (6,-3)

b (9,0)

c (5,1)

Step-by-step explanation:

The quantity of water left in the barrel is 5.175 gallons. The correct option is the second option 5.175 gallons

From the question, we are to determine how much water is left in the barrel

From the given information,

"The barrel is filled with 18 gallons of water"

and

"Ryan used 9.7 gallons to water his garden in June"

After this time,

The quantity of water that would be left in the barrel will be 18 gallons - 9.7 gallons

= 8.3 gallons

Then,

3 and one eighth gallons in July

3 and one eighth = 3 1/8 = 3.125 gallons

The quantity of water that would be left is 8.3 gallons - 3.125 gallons

= 5.175 gallons

Hence, the quantity of water left in the barrel is 5.175 gallons. The correct option is the second option 5.175 gallons

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Answer:

b

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

What must be true

Step-by-step explanation:

Answer:

3r

Step-by-step explanation:

there is an invisible 1 in front of the rs. Add them and you get 3r

Answer:

3r

Step-by-step explanation:

Let's replace r with a number.

For example,

r=3

3+3+3=9

We know also that 9=3 multiplied by 3. Therefore, r+r+r=3r

The steps in solving the given expression shows that the result is:

0.92 * 10²

The expression is given as:

6.89 * 10⁻⁴/(7.5 * 10⁻⁶) = 0.92 * 10¹

The steps that Maggie followed are:

Step 1: Rewrite the given expression:

6.89 * 10⁻⁴/(7.5 * 10⁻⁶) = 0.92 * 10¹

Step 2: Divide the coefficients:

The coefficient of the numerator (6.89) is divided by the coefficient of the denominator (7.5) to get:

6.89 / 7.5 = 0.9186667.

Step 3: Divide the powers of 10:

This is done by subtracting the exponent of the denominator 10⁻⁶ from the exponent of the numerator 10⁻⁴ to get: 10²

Step 4: Combine the results:

This gives:

0.9186667 * 10²

Step 5: Simplify the coefficient:

She rounded the coefficient (0.9186667) to two decimal places, resulting in 0.92.

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The area of the square with a side length of 3.1 meters is 9.61 square meters.

To find the area of a square, we need to multiply the length of one side by itself. In this case, the square has a side length of 3.1 m.

Area of a square = side length × side length

Substituting the given side length into the formula:

Area = 3.1 m × 3.1 m

To perform the calculation:

Area = 9.61 m²

It's worth noting that when calculating the area, we are working with squared units. In this case, the side length is in meters, so the area is expressed in square meters (m²). The area represents the amount of space enclosed within the square.

Remember, to find the area of any square, you simply need to multiply the length of one side by itself.

The area of the square with a side length of 3.1 meters is 9.61 square meters.

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Answer:

48cm

Step-by-step explanation:

8x6=48

Then it will take approximately 6.3 hours for the culture to grow to 80,000 bacteria

The given formula for the number of bacteria in a culture after t hours is:y = 5000(3)^tWe are required to find the number of hours it will take the culture to grow to 80,000.

This can be done by setting y equal to 80,000 and then solving for t.5000(3)^t = 80,000

Divide both sides by 5000:3^t = 16Now, we need to solve for t by taking the logarithm of both sides.

However, it is easier to use logarithmic properties to simplify the equation first.3^t = 2^4

Raise both sides to the power of (1/log3):log3(3^t) = log3(2^4)t = 4/log3(2)Using a calculator, log3(2) ≈ 0.631, so:t ≈ 4/0.631 ≈ 6.3.

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Answer:

The formula for finding the area of a circle using its radius is:

The formula for finding the area of a circle using its radius is:A = πr²

The formula for finding the area of a circle using its radius is:A = πr²where A is the area of the circle and r is its radius.

The formula for finding the area of a circle using its radius is:A = πr²where A is the area of the circle and r is its radius.The formula for finding the area of a circle using its diameter is:

The formula for finding the area of a circle using its radius is:A = πr²where A is the area of the circle and r is its radius.The formula for finding the area of a circle using its diameter is:A = (π/4)d²

The formula for finding the area of a circle using its radius is:A = πr²where A is the area of the circle and r is its radius.The formula for finding the area of a circle using its diameter is:A = (π/4)d²where A is the area of the circle and d is its diameter.

The formula for finding the area of a circle using its radius is:A = πr²where A is the area of the circle and r is its radius.The formula for finding the area of a circle using its diameter is:A = (π/4)d²where A is the area of the circle and d is its diameter.Note that π (pi) is a mathematical constant that represents the ratio of the circumference of a circle to its diameter and is approximately equal to 3.14

Step-by-step explanation:

Hope it Helps

The formula for finding the area of a circle using its radius is π * r².

The formula for finding the area of a circle using its diameter is (π/4) * d².

The formula for finding the area of a circle using its radius is:

A = π * r²

where:

A represents the area of the circle,

π (pi) is a mathematical constant approximately equal to 3.14159, and

r represents the radius of the circle.

If you have the diameter of the circle instead of the radius, you can use the following formula:

A = (π/4) * d²

where:

A represents the area of the circle,

π (pi) is a mathematical constant approximately equal to 3.14159, and

d is the diameter of the circle.

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Table is attached below-

1) 1 m² = 10.75 tiles

2) 10 m² = 107.5 tiles

3) 9.3 m² of tiles = 100 tiles

4) a m² = 10.5a tiles

We have been given that

Every square meter of ceiling requires 10.75 tiles.

we have find missing values in the table.

We know,

1 square meter of ceiling =  10.75 tiles.      ...(i)

1. Therefore, the number of tiles corresponding to 1 square meter of         ceiling is 10.75.

Multiply both sides by 10.

10×1 square meter of ceiling =  10×10.75 tiles.

10 square meter of ceiling =  107.5 tiles.

2. Therefore, the number of tiles corresponding to 10 square meter of ceiling is 107.5.

Divide both sides by 10.75 in (i).

(1/10.75) square meter of ceiling = 1 tile.

Multiply both sides by 100.

(100/10.75) square meter of ceiling = 100 tiles.

On approximating the value, we get

9.3 square meter of ceiling = 100 tiles.

3. Therefore, the square meters of ceiling corresponding to 100 tiles is about 9.3.

Multiply both sides by a in (i).

a×1 square meter of ceiling =  a×10.75 tiles.

a square meter of ceiling =  10.75a tiles.

4. Therefore, the number of tiles corresponding to a square meter of ceiling is 10.75a.

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Answer:

5. The value (x,y) of the x-intercept means that in 15 minutes the tub is completely drained.

6. The y-intercept is (0, 20)

7. The value (x,y) = (0, 20) means that at the start of draining, there are 20 gallons of water in the drain.

Explanation:

The graph shown in the figure is that of a linear equation which we deduce to be

The y-axis represents the number of gallons of water left in the tub and the x-axis represents the amount of time elapsed since the start of the draining.

Therefore, the point (15, 0 ) is the x-intercept and it says that in 15 minutes there amount of water in the tank is 0.

Similarly, the point (0, 20) is the y-intercept and it says that at x =0 (time of the start of the drain) the amount of water in the tub is 20 gallons.