0.276 a rational number, why? explain please.

Answer:

CD = 15

Step-by-step explanation:

We are given two quadrilaterals: CDEF and GIJH.

We know that CD = 3x - 6, and GI = x + 8.

We want to find the length of CD.

Notice how CD and GI both have one tick mark on them.
This indicates that these two are congruent, meaning that they have the same length.

Because of that, CD = GI.

If we substitute 3x - 6 for CD and x + 8 for GI, we get:

3x - 6 = x + 8

Now, we can solve this like a regular equation.

Add 6 to both sides.

3x - 6 = x + 8

    +6       +6

_________________

3x = x + 14

Subtract x from both sides.

3x = x + 14

-x    -x

_____________-

2x = 14

Divide both sides by 2.

2x = 14

÷2    ÷2

____________

x = 7

We found the value of x.

Now, substitute 7 as x in 3x-6 (the length of CD).

CD = 3x - 6 = 3(7) - 6 = 21 - 6 = 15

Therefore, CD = 15.

The equation of the line passing through the point (5, - 3) that is parallel to 5x + 7y = 9 will be 5x + 7y - 4 = 0.

Let the equation of the line be ax + by + c = 0. Then the equation of the parallel line that is parallel to the line ax + by + c = 0 is given as ax + by + d = 0.

The equation of the line is given below.

5x + 7y = 9

The equation of the line that is parallel to the line is given as,

5x + 7y + d = 0

The line is passing through (5, -3). Then we have

5(5) + 7(-3) + d = 0

25 - 21 + d = 0

4 + d = 0

d = - 4

The equation of the line passing through the point (5, - 3) that is parallel to 5x + 7y = 9 will be 5x + 7y - 4 = 0.

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The standard deviation of the sampling distribution of sample means will be 0.6667.

The Gaussian Distribution is another name for it. The most significant continuous probability distribution is this one. Because the curve resembles a bell, it is also known as a bell curve.

Given information

μ= 38 and σ = 6; n = 81

The standard deviation of the sampling distribution is given as,

⇒ 6 / √81

⇒ 6 / 9

⇒ 0.6667

The standard deviation of the sampling distribution of sample means will be 0.6667.

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Points are (0,0) and (2,8).

What is the gradient?

The vector field f's value at a point p in the vector calculus is the "direction and rate of fastest increase" for a scalar-valued differentiable function f with many variables.

Here, we have

Given: y = 4x

The number in front of the x is the gradient (slope). This number represents the amount of up or down for a given amount of long.

If the number in front of the x (coefficient) is positive the 'slope' goes up. If the coefficient is negative it means the 'slope' is down.

Now, substitute any value you chose into x, multiply it by 4 and you have your value for y

Let x = 0,

y = 4(0) = 0

So this can be our first point on the graph.

(x₁, y₁) ⇒ (0,0)

Let x = 2

y = 4(2) = 8

So this can be our second point on the graph.

(x₂, y₂) ⇒ (2,8)

Now, we draw a line through them extending it to the edges of the axis.

Hence, Points are (0,0) and (2,8).

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The gigabytes of music  downloaded in one hour is 19.8 gb per hour

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

Size =  75.24 gigabytes

Time = 3.8 hours

The rate is then calculated as

Rate = Size/Time

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

Rate = 75.24/3.8

Evaluate

Rate = 19.8

Hence, the rate is 19.8 gb per hour

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The radius of a circle that has a circumference of 16 is given by 8/π

The formula for the circumference of a circle is C = 2πr

Where,

r = the radius and

C = the circumference

From

C = 2πr

r = C / 2π

When C = 16

r = 16 / 2π

r = 8/π

In conclusion, the radius of the circle is 8/π

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Answer:

C is irrational--6 is not a perfect square.

Answer: Let's call the present age of Emma x, the present age of Carson y, and the present age of their dad z.

From the information provided we know that:

x + y = (1/2)z + 4

We can find the value of z by isolating it:

x + y = (1/2)z + 4

x + y + 4 = (1/2)z + 4 + 4

x + y + 4 = (1/2)z + 8

2(x + y + 4) = z

We don't know the actual age of Emma, Carson and their dad, we only know the relationship between them.

Step-by-step explanation:

Answer: Yes, there is an outlier of 45, This means that one person's age was 45, which is 25 years younger than the next closest age.

Hope this helps! :)

Step-by-step explanation:

Answer:

D

GIVE HIME BRAINLIEST

Step-by-step explanation:

Answer:Slope=5

Step-by-step explanation

The simplified ratio of miles to gallons is 14:1. The solution has been obtained by using the concept of ratios.

What are ratios?

A ratio is a comparison or condensed version of two identical values. The reciprocity of this relationship tells us how many times one quantity is equal to the other. To put it simply, a ratio is a number that can be used to represent one thing as a percentage of another.

We are given the distance to be 189 miles and the volume of gas 13[tex]\frac{1}{2}[/tex] gallons.

So, in order to find the ratio of miles to gallons, we need to divide 189 miles onto 13[tex]\frac{1}{2}[/tex] gallons of gas.

We get

189/13.5 = 14

Hence, the ratio of miles to gallons is 14:1.

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F(x)=1/(x+3)(x-7) is the rational functions which is graphed.

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

A vertical asymptote is a value of x for which the function is not defined, that is, it is a point which is outside the domain of a function;

In a graphic, these vertical asymptotes are given by dashed vertical lines.

An example is a value of x for which the denominator of the function is 0.

In this graphic:

Dashed vertical lines at: x=-3, x=7 , thus, for x+3 and x-7 the denominator is zero.

Thus, the function graphed is:

F(x)=1/(x+3)(x-7)

Hence, F(x)=1/(x+3)(x-7) is the rational functions which is graphed.

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The last number of the first half is 3.5

A number system is defined as a system of writing to express numbers.

The set of all the 7-digit numbers that can be obtained using, for each number, all the digits 1, 2, 3,..., 7.

If you list the numbers of the set in increasing order and split the list exactly at the middle into two parts of the same size

We need to find the last number of the first half

The numbers are 7.

To split into two parts we have to divide by 2

So 7/2=3.5

Hence, the last number of the first half is 3.5

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f(x) and g(x) are inverses using composition

A function is a relationship between inputs where each input is related to exactly one output. Every function has a domain and codomain or range. A function is generally denoted by f(x) where x is the input.

To confirm the inverse relationship using composition.

For valid inverse f(g(x)) must be equal to g(f(x))

f(x) = ∛(x) + 13; g(x) = (x - 13)³:

f(g(x)) = f((x - 13)³)

f(g(x)) = ∛((x - 13)³) + 13

f(g(x)) = x - 13 + 13

f(g(x)) = x

g(f(x)) = g(∛(x) + 13)

g(f(x)) =  (∛(x) + 13 - 13)³

g(f(x)) =  (∛(x))³
g(f(x)) =  x

Since f(g(x)) = g(f(x)) then f(x) and g(x) are inverse

f(x) = x³ + 1; g(x) = ∛(x - 1):

f(x) = x³ + 1; g(x) = ∛(x - 1)

f(g(x)) = f(∛(x - 1))

f(g(x)) =  (∛(x - 1))³ + 1

f(g(x)) =  x - 1 + 1

f(g(x)) =  x

g(f(x)) = g(x³ + 1)

g(f(x)) = ∛((x³ + 1) - 1)

g(f(x)) = ∛(x³)

g(f(x)) = x

Since f(g(x)) = g(f(x)) then f(x) and g(x) are inverse

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Answer:

Out of 50 students in a class, 40% are girls, meaning there are 50 x 40% = 20 girls in the class.

And the number of boys is 50 - 20 = 30 students.

If 30% of the girls wear spectacles, that means 30/100 x 20 = 6 girls wear spectacles.

And the number of girls not wearing spectacles is 20 - 6 = 14.

So the total number of girls wearing spectacles is 6, and the number of boys is 30, and the number of girls not wearing spectacles is 14.

Answer: Pictures below show intersection point on the graph.

Step-by-step explanation:

The values of Radius PQ if PQ = 24 and OR = 5. is 13 and The radius if PQ has length 24 and 9 units aways from center is 15 .

What is area of circle ?

Area of circle can be defined as  product of pi and square of radius.

Given,

In the chord PQ of O , point R is choosen so that OR is perpendicular to PQ.

The radius if PQ = 24 and OR = 5.

r = [tex]\sqrt{(24/2)^2 +5^2 }[/tex]

r = [tex]\sqrt{144+25}[/tex]

r = [tex]\sqrt{169}[/tex]

r = 13.

The radius if PQ has length 24 and 9 units aways from center.

radius  = [tex]\sqrt{(24/2)^2 + 9^2}[/tex]

= [tex]\sqrt{(12)^2 + 9^2}[/tex]

= [tex]\sqrt{144+81}[/tex]

= [tex]\sqrt{225}[/tex]

r = 15 .

The far from PQ from the center if it has length 16 and the circle has radius 10 is

PQ = [tex]\sqrt{10^2 - (16/2)^2}[/tex]

PQ = [tex]\sqrt{100-64}[/tex]

PQ = [tex]\sqrt{36}[/tex]

PQ = 6

The value of OR if PQ has length 6[tex]\sqrt{5}[/tex] and radius 9 .

OR = [tex]\sqrt{(9^2) - (3\sqrt{5})^2 }[/tex]

OR = [tex]\sqrt{81-45}[/tex]

OR = [tex]\sqrt{36}[/tex]

OR = 6 .

The value of OP .

OP = [tex]\sqrt{QR^2 + OR^2 }[/tex]

OP = [tex]\sqrt{(2\sqrt{3})^2 + (2\sqrt{2})^2 }[/tex]

OP = [tex]\sqrt{12+8}[/tex]

OP = 2[tex]\sqrt{5}[/tex]

Hence, the values of Radius PQ if PQ = 24 and OR = 5 is 13 and The radius if PQ has length 24 and 9 units aways from center is 15 .

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The velocity of the ball when it returns to the ground is -8 m/s

An equation is an expression composed of variables and numbers linked together by mathematical operations.

The distance of a ball thrown upward is given by:

h(t) = -2t² + 12t - 10

The ball hits ground when h(t) = 0, hence:

-2t² + 12t - 10 = 0

t = 5 or 1

The velocity (V) of the ball is:

V = dh/dt

V = (d/dt)(-2t² + 12t - 10) = -4t + 12

V = -4t + 12

The ball hits ground when t = 5 or 1 s, hence:

V(1) = -4(1) + 12 = 8 m/s

V(5) = -4(5) + 12 = -8

The velocity on the ground is -8 m/s

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Answer:

Step-by-step explanation:

Answer:

1. The volume of water in the tank in cubic yards can be calculated by multiplying the length, width, and depth of the tank in feet by the conversion factor of 0.037037 yds3/ft3:

87 ft x 36 ft x 15 ft x 0.037037 yds3/ft3 = 997.78 yds3

2. To treat the water, the aquarium must purchase 998 bags of salt, as 1.1 yds3 of water requires one bag of salt.

3. The aquarium must pay $4,835.30 for the salt to treat the water in the new shark tank. This is calculated by multiplying the number of bags of salt (998) by the cost of one bag of salt ($4.85).

The product of 12 and a number and then the product multiplied by itself 7 times is (12n)^7.

In Mathematics, an algebraic expression is a mathematical equation that can be used for showing the relationship which exist between two (2) or more variables, numerical quantities, as well as in conjunction with different mathematical operations.

Additionally, a coefficient simply refers to a constant numerical value (number or numeral) that written before the variable in any algebraic expression.

Assuming the variable n represents the unknown numerical value (number), we would translate the word problem into an algebraic expression as follows;

The product of 12 and a number = 12 × n = 12n

Since the product is multiplied by itself 7 times, we have the following algebraic expression;

Algebraic expression = (12n)^7

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The coordinates of the endpoint P2 in the line segment are (- 4, 8).

In this problem we have the coordinates of an endpoint in a line segment and the midpoint of that segment, that is, the point in the line segment that partitions it into two parts of equal length. The formula needed to find the coordinates of the missing endpoint is:

0.5 · P1(x, y) + 0.5 · P2(x, y) = M(x, y)

Where:

If we know that P1(x, y) = (- 6, 4) and M(x, y) = (- 5, 6), then the coordinates of the other endpoint are:

0.5 · P1(x, y) + 0.5 · P2(x, y) = M(x, y)

0.5 · (- 6, 4) + 0.5 · P2(x, y) = (- 5, 6)

(- 3, 2) + 0.5 · P2(x, y) = (- 5, 6)

2 · (- 3, 2) + P2(x, y) = 2 · (- 5, 6)

(- 6, 4) + P2(x, y) = (- 10, 12)

P2(x, y) = (- 10, 12) - (- 6, 4)

P2(x, y) = (- 4, 8)

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Answer:

Step-by-step explanation:

a PERSON SHOULD SPEND AT LEAST 35 DOLLARS A WEEK ON COFFEE

The next two numbers on the number pattern are given as follows:

A 12.2, 12.9.

To obtain the next two points on the number pattern, first we must identify what is the pattern.

The pattern is given as follows:

The final term is 6.1, which is obtained after the addition of 0.7 to 5.4. Double 6.1 is obtained multiplying the number by 2, as follows:

2 x 6.1 = 12.2.

Then the number obtained after 0.7 is added to 12.2 is given as follows:

0.7 + 12.2 = 12.9.

Meaning that the correct option to complete the number pattern is given by option A.

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This means that, in addition to what the employee contributes, the employer will match up to 6% of an employee's total compensation to his or her 401k account.

Employee compensation is the total remuneration that an organisation pays to an employee in exchange for the work that employee performed during the accounting period, whether that payment is made in cash or in kind. Taxes less subsidies on production include those due or owed on goods or services produced as outputs as well as other taxes or subsidies on production, such as those due on labour, equipment, buildings, or other assets used in production.

Employee compensation consists of two main parts:

(a) Salary and wages paid in cash or kind;

(b) Social insurance contributions that employers are required to pay, including contributions to social security programmes, actual social contributions to other employment-related social insurance programmes, and imputed social contributions to those same programmes.

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Answer:

  2

Step-by-step explanation:

You want the number of incorrect answers out of 8 when 8 points are given for a correct answer and 5 points are deducted for an incorrect answer, and the total score was 38.

Let x represent the number of incorrect answers. Then 8-x is the number of correct answers, and the total score is ...

  8(8 -x) -5(x) = 38

Simplifying the equation, we have ...

  64 -13x = 38

  64 -38 = 13x . . . . . . add 13x-38

  26/13 = x = 2 . . . . . . divide by 13

Lucie solved 2 problems incorrectly.

Let x = the original price of the electric wok.

r(x) = x - $5 (the price after the rebate)

p(x) = x * (1 - 0.25) (the price after the discount)

Given that x = $38, we can substitute that value in to find the final cost of the wok in each composition:

r(p(x)) = r(p(38)) = r(38 * (1 - 0.25)) = r(28.5) = 28.5 - $5 = $23.50

p(r(x)) = p(r(38)) = p(38 - $5) = p(33) = 33 * (1 - 0.25) = $24.75

So, r(p(x)) = $23.50 and p(r(x)) = $24.75

r(p(x)) will save her the most money.