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The meand and variance are 13.75 cm and 17.52 respectively.

Each possible outcome is equally likely when there is a uniform probability.

For this situation, we have a lower limit of the distribution that we call a and an upper limit that we call b.

The mean of the uniform distribution is:

M = ( a + b ) / 2

The variance of the uniform distribution is given by:

V = ( b - a )² / 12

Uniform distribution on the interval ( 6.5, 21 )

Therefore, a = 6.5 and b = 21

Hence, the mean will be:

M = ( 6.5 + 21 )/ 2

M = 27.5 / 2

M = 13.75

The mean of depth is 13.75 cm.

The variance will be:

V = ( b - a )² / 12

V = ( 21 - 6.5 )² / 12

V = 210.25 / 12

V = 17.52

The variance of depth is of 17.52 cm².

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the total amount is 9000

Answer:  square root of 104

Step-by-step explanation:

The length of the missing side in the right triangle is approximately √104.

Given is a right triangle with one leg labeled 11 and hypotenuse labeled 15.

We need to find length of the missing side.

To determine the length of the missing side in the right triangle, we can use the Pythagorean theorem.

It states that in a right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.

Let's denote the missing side as "x".

According to the given information:

One leg (one of the shorter sides) is labeled as 11.

The hypotenuse (the longest side) is labeled as 15.

Using the Pythagorean theorem, we can set up the equation:

11² + x² = 15²

Simplifying this equation:

121 + x² = 225

Subtracting 121 from both sides:

x² = 225 - 121

x² = 104

To find the value of "x," we can take the square root of both sides of the equation:

x = √104

Therefore, the length of the missing side in the right triangle is approximately √104.

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The 99% confidence interval for the population proportion p is 0.833< p < 0.863.

Given that,

x = 3059

n = 3604

Point estimate = sample proportion = x / n =3059/3604=0.848

[tex]1 - \hat p[/tex]  = [tex]1-0.848 =0.152[/tex]

At 99% confidence level the z is ,

[tex]\alpha[/tex] = 1 - 99% = 1 - 0.99 = 0.01

[tex]\alpha[/tex]/ 2 = 0.01 / 2 = 0.005

[tex]Z\alpha[/tex]/2 = [tex]Z*0.005[/tex] = 2.576  (  Using z table   )

Margin of error = E = [tex]Z\alpha / 2 * (\sqrt(((\hat p * (1 - \hat p)) / n)[/tex]

                              = [tex]2.576* (\sqrt((0.848*0.152) /3604 )[/tex]

                               =0.015

A 99% confidence interval for population proportion p is ,

[tex]\hat p - E < p < \hat p + E[/tex]

0.848-0.015< p <0.848+ 0.015

0.833< p < 0.863

Hence, the 99% confidence interval for the population proportion p is 0.833< p < 0.863.

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The summer camp registration decreased in 2021 by 5.26 percent.

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Answer:

y-y1=m(x-x1)

y+1=-2(x-7)

y+1=-2x+14

-1           -1

y=-2x+13

Step-by-step explanation:

Linear equations

Apply the multiplicative law of distribution.

Rearrange the unknown terms on the left side of the equation.

Combine as terms

Calculate the sum or difference.

Divide both sides of the equation by the coefficient of the variable.

The answer is x = - 9/4. Because if we do the division, the result is not exact; means that the result is decimal.

Answer:

x = -9/4

Step-by-step explanation:

2(5x+3)=6x-3

10x + 6 = 6x - 3

10x - 6x = -3 - 6

4x = -3 - 6

4x = -9

The answer is x = -9/4

Answer:

[tex] {x}^{2} + 6x - 27 = (x + 9)(x - 3)[/tex]

The most appropriate choice for proportionality will be given by

When y = 24, x = 10

What is proportionality?

Any relationship which maintains the same ratio is known as proportionality.

Proportionality can be of two types-

Direct Proportion and inverse proportion

Direct proportion

Two quantities are said to be  directly proportional, if on increasing the value of one quantity, the value of other quantity also increases and vice versa

For Example- Cost of a commodity and quantity of a commodity are direct proportional.

Inverse proportion

Two quantities are said to be inversely proportion, if on increasing the value of one quantity, the value of other quantity decreases.

For Example- Number of men and time taken by those men to do a certain work are inversely proportional.

Here,

y is inversely proportional to x

[tex]y = k \times \frac{1}{x}[/tex], where [tex]k[/tex] is an arbitrary constant known as proportionality constant

when y = 80, x =3

Putting the value of y and x in the above equation,

[tex]80[/tex] = [tex]k \times \frac{1}{3}[/tex]

[tex]k = 80 \times 3\\k = 240[/tex]

So [tex]y = 240 \times \frac{1}{x}[/tex]

when [tex]y = 24[/tex]

[tex]24 = 240 \times \frac{1}{x}[/tex]

[tex]x = \frac{240}{24}[/tex]

[tex]x = 10[/tex]

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Answer:

The probability that you draw two balls that are both black is [tex]\frac{1}{6}[/tex]

Step-by-step explanation:

To find probability, take the number of desirable outcomes over the total number of possible outcomes.

In this case, the black balls are desirable. There are four of them.

this means the numerator of the first fraction is 4. The denominator is the total possible outcomes or in this case the total number of black and white balls. This number is 9. The first probability fraction is [tex]\frac{4}{9}[/tex]

Lets say that the first one was black. Now we need to find the probability of drawing another one. Now there are black balls left in the bag. This means that the number of desirable outcomes is 3. There are also 8 balls total. This means the number of total possible outcomes is 8. The second probability is [tex]\frac{3}{8}[/tex]

To get the total probability you multiply both of the individual probabilities together.

[tex]\frac{4}{9} *\frac{3}{8} =\frac{1}{6}[/tex]

The image and preimage coincide when reflecting a figure in a line or a point. Every point of a figure is translated to an image across a fixed line via a reflection. The fixed line is referred to as the reflection line

An image can be produced by the reflection of a shape along a line of reflection. The mirror line is another name for the reflection line.

Reflections move each shape's points down a line known as the line of reflection (sometimes informally called the mirror line). The distance between a point and its matching point in the image is the same.

Consider the case when the point (6, 7) is reflected across the line y = x. The reflected point's coordinates are (7, 6). Similar to reflections across

y = -x, reflections across y = -x involve not only reversing the order of the coordinates but also their signs. For instance, when reflected over the line y = -x, (8, -2) becomes (2, -8)

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Step-by-step explanation:

...............

............

EXPLANATION

Given the equation 8x -4y

When x=2 and y=3 the resulting expression would be as follows:

8*2 -4*3=

=16 - 12

= 4

The answer is 4

The most appropriate choice for tangent to a curve will be given by- 2x + 25y = 10 is the required equation of tangent.

What is tangent to a curve?
In geometry, a tangent line is a straight line that most closely resembles (or "clings to") a curve at a particular point. It could be thought of as the limiting role of straight lines that pass through the specified point and a nearby curve point as the second point gets closer to the first. If two curves share the same tangent at a given point, they are said to be tangent. Similar definitions apply to the tangent plane to an exterior at a point and two surfaces that are tangent at a point.

Equation of  tangent to a curve at a point [tex](x_1, y_1)[/tex]  is given by

[tex]y-y_1 = \frac{dy}{dx}|_{(x_1, y_1)}(x - x_1)[/tex]

Here,
f(x) = [tex]\frac{2}{x}[/tex]
f'(x) = [tex]\frac{d}{dx} (\frac{2}{x})[/tex]

     = [tex]2(-1)x^{-1-1}\\-2x^{-2}[/tex]

[tex]f'(x)|_{(5, 0)} = -\frac{2}{5^2}[/tex]

               [tex]= -\frac{2}{25}[/tex]

Equation of tangent

[tex]y - 0 = -\frac{2}{25}(x - 5)\\\\25y = -2x +10\\2x + 25y = 10[/tex]

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Answer:

see my photo. hope it can help

When the given numbers are ordered from least to greatest, the result would be 8/25, 1, 5/4, 1.3

To be able to order the numbers, it would be best to convert them to the same form. In order words, all the numbers should either be decimals or fractions.

Decimals are easier to compare so convert them to decimals:

= 8 / 25                                                    = 5 / 4

= 0.32                                                      = 1.25

The numbers are:
1, 0.32, 1.3, 1.25

The order from least to greatest is:

0.32, 1, 1.25, 1.3

or:

8/25, 1, 5/4, 1.3

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[tex]18x \geqslant 566 - 371 \\ 18x \geqslant 195 \\ \frac{18x}{18} \geqslant \frac{195}{18} \\ x \geqslant 10.8333333333[/tex]

YOU CAN EVEN WRITE IT IN THE FRACTION FORM .

BE REMINDED THAT <> CHANGE SIGN WHEN YOU DIVIDE OR MULTIPLY A NEGATIVE NUMBER ONLY.

HOPE THIS HELPS

Answer:

Step-by-step explanation:

18x ≥ 195 if equal to the answer is 10.83(3)

A construction company takes 1/8 hours to remove 1/4 metric tons of dirt from a construction site 2 metric tons in an hour.

Ton is the name of a number of different measurement units. It has a lengthy history and a variety of meanings and applications.

It mostly discusses weight units. Due to the ambiguous nature of what ton might mean.

2,240 pounds, or the long ton, the tonne, also known as a metric ton, which is 1,000 kilograms, and the short ton, which is 2,000 pounds.

Its original use as a volume measurement has persisted in terminology like the freight ton and several other units, with capacities ranging from 35 to 100 cubic feet (0.99 to 2.83 [tex]m^{3}[/tex]). The ton has recently been used for specialized purposes such as energy measurement and vehicle classification. It can also be used as a measure of energy or as a power unit in refrigeration; this is commonly referred to as a ton of refrigeration.

Due to the fact that the ton (of any system of measuring weight) is typically the heaviest unit specified in informal speech, its word also has figurative usage, singular and plural, figuratively signifying a big amount or quantity, or to a great degree, as in "We have a ton of homework, there are a ton of bees in this hive, and I really, really adore you."

The best way to do this is to convert all fractions to decimals. Problem starts out looking like this.

Formula

Rate = Tons removed / hours

Tons Removed = 1/4 metric ton

Time taken = 1/8 hour

rate = [tex]\frac{\frac{1}{4} }{\frac{1}{8} }[/tex]

Rather than doing it with the fractions, it is much easier to do it with decimals

1/4 = 0.25

1/8 = 0.125

Now what we get is rate = 0.25 / 0.125 = 2

So, now 2 metric tons can be removed in an hour

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Answer:

J

Step-by-step explanation:

the magnitude of a vector (a, b ) is

[tex]\sqrt{a^2+b^2}[/tex]

then magnitude of vector v = (4, 3 ) is

| v | = [tex]\sqrt{4^2+3^2}[/tex] = [tex]\sqrt{16+9}[/tex] = [tex]\sqrt{25}[/tex] = 5

(a) On scaling up by a factor of 2 , the equivalent fraction is 18/30.

(b) On scaling up by a factor of 3 , the equivalent fraction is 27/45.

(c) On scaling down by a factor of 3 , the equivalent fraction is 3/5 .

In the question ,

a fraction 9/15 is given ,

Part(a)

to scale up the fraction by a factor of 2 , we multiply the numerator and denominator by 2 .

On multiplying , we get

9/15 = (9*2)/(15*2) = 18/30 .

Part(c)

to scale up the fraction by a factor of 3 , we multiply the numerator and denominator by 3 .

On multiplying , we get

9/15 = (9*3)/(15*3) = 27/45 .

Part(c)

to scale down the fraction by a factor of 3 , we divide the denominator and numerator by 3 .

On dividing , we get

9/15 = (9/3)/(15/3) = 3/5 .

Therefore , (a) On scaling up by a factor of 2 , the equivalent fraction is 18/30.

(b) On scaling up by a factor of 3 , the equivalent fraction is 27/45.

(c) On scaling down by a factor of 3 , the equivalent fraction is 3/5 .

The given question is incomplete , the complete question is

Write three fractions equivalent to 9/15 .

Scale the numerator and denominator up for the first two and down for the third.

(a) Scale up by: __ Equivalent fraction: __

(b) Scale up by: __ Equivalent fraction: __

(c) Scale down by: __ Equivalent fraction: __

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Answer:

[tex]\boxed{\sf{-15y^6}}[/tex]

Step-by-step explanation:

To solve this, you have to use a distributive property to multiply the numbers from left to right.

Distributive property:

A(B+C)=AB+AC

A(B-C)=AB-AC

[tex]\sf{3y^2\left(-5y^4\right)=-3y^2* 5y^4}[/tex]

Multiply.

-3*5=-15

-15y²y⁴

[tex]\sf{y^2y^4=y^2^+^4=y^6}[/tex]

=-15y⁶

Therefore, the final answer is -15y⁶.

I hope this helps, let me know if you have any questions.

Answer:

first way: 2 Angles and one side

second way: 2 sides and one angle

Answer:

Step-by-step explanation:

congruent triangles

how to tell if triangles are congruent using SSS, SAS, ASA, and AAS rules

why AAA and SSA do not work as congruence shortcuts

the Hypotenuse Leg Rule for right triangles

how to use CPCTC (corresponding parts of congruent triangles are congruent)

its 0=-5

ur mom lolololololoOLOOLOLLLLO

The value of x is 21 °.

1. The vertically opposing angle pairs are equal.

2. The related angle pairs are equivalent.

3. The alternative outside angle pairs are equivalent.

4. There is equality between the alternate interior angle pairs.

In geometry, parallel lines can be defined as two lines in the same plane that are at equal distance from each other and never meet. They can be both horizontal and vertical. We can see parallel lines examples in our daily life like a zebra crossing, the lines of notebooks, and on railway tracks around us.

Given: ∠ 8 = 86° and ∠ 4= (4x + 2)°

Since ∠4 = ∠8 { Because angles on the same side of the parallel sides are equal }

Thus when we equate these two we get ;

86 = 4x +2

4x = 84

x= 21

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The given ant can only go up or right here in every turn and as there is a 50% chance for either of

them, therefore each of the paths in 12 moves would be equally likely here.

As for each of the 12 steps here, there are 2 ways that the ant can move, therefore total number of

paths in 12 moves is computed as:

= 2^12 here.

We use the multiplication rule for independent events here to get the total number of outcomes here

by getting the product of the number of outcomes for each of those independent events.

Total number of 12 move paths such that we reach 4, 8 here is computed as the number of

permutation of 12 moves with 4 rights and 8 up points here. This is computed here as:

12!/(8!4!) = 495

Therefore, the probability that the ant is located at (4, 8) here is computed as:

=

495/(2^12)

= 0.1208

Therefore, 0.1208 is the required probability here

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The domain and range of f(x) = |x| are Domain: (–∞, ∞ ) ; Range: [0, ∞)

f(x) = |x| is the absolute value function.

It always gives non-negative function values.

The absolute value function is defined as,

|x| = { x ; if x ≥ 0

      { -x ; if x < 0

So this definition says that if x is a non-negative real number, then the function gives the non-negative value itself.

Also if x is a negative real number, then -x is a positive real number which is the outcome from the absolute value function for negative real numbers.

This function is defined for all real numbers. Hence the domain is all the real numbers which is (–∞, ∞ ).

But the range of the function are only non-negative real numbers as absolute value function gives only non-negative values. So the range is    [0, ∞).

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Answer:

7×+12-6×=5(2×+6)=7×-6+12=10×+30=7×-6×-10×=30-12=9×÷9×=18÷9×=×=2

Answer:

No solution

Step-by-step explanation:

The method that will use is substitution

ill use the equation 5x+2y=10 and substitute into the other one

5x+2y=10

2y=10-5x

y=5-2.5x

Now we must insert this equation into another

5x + 2(5-2.5x) = 20

5x+10-5x = 20

10=20

10 does not equal to 20 so it has no solution

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Answer:

$45.70

Step-by-step explanation:

$9.40 four times and $8.10 1 time so 9.40 x 4 = 37.6 + 8.10 = 45.70