Marc ordered 3 CDs from music catalog and paid a fixed shipping fee of $6.99. His tot for the order was $36 96. What is the cost if each CD?

Answer:

Step-by-step explanation:

area of trapezoid = 1/2 (a + b) h

where 'a' and 'b' are parallel sides.

and 'h' is height.

                 area     = 1/2 (9 + b) 18.9

                  226.8 = 1/2 (9 + b) 18.9

                   226.8 × 2 = (9 + b) 18.9

                     453.6 = (9 + b) 18.9

                     453.6 ÷ 18.9 = (9 + b)

                        24 = (9 + b)

                          b = 15 millimeters

Answer:

Step-by-step explanation:

One common trick for memorizing the 8 times table is to pair it with the 4 times table.

For example, 8 x 4 = 32, so 8 x 5 = 40 because 5 is one more than 4. Similarly, 8 x 6 = 48 because 6 is two more than 4, and so on. Another trick is to think of it as 8 x 10 = 80 and then subtract 8. For example, 8 x 7 = 80 - 8 = 72.

The eight times table trick states that when you multiply eight by a number between one and five, the result always begins with a digit one lower than the number from one to five. The answer begins with a digit that is two less than the number from 6 to 10 when multiplying 8 by a number between 6 and 10.

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The product is the answer to a multiplication problem.

You can obtain the result by repeatedly adding the whole number of groups in the problem. This is known as repeated addition. We are aware that multiplication is the term used to describe repeated addition. On a number line, we start at 0 and go steadily to the right side of the number line to multiply integers. Multiplication is one of the four basic mathematical operations, along with addition, subtraction, and division. In arithmetic, multiply refers to continuously adding sets of the same size. In mathematics, multiplying the numbers yields the product of two or more integers.

The multiplication of two integers in mathematics represents the repeated addition of one number in respect to another. These numbers can be natural numbers, fractions, integers, whole numbers, etc. M is either added to itself 'n' times or subtracted from itself when m is multiplied by n.

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Total cost of dinner including tip = $861.40

In mathematics, a percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

Given

Cost of the dinner = $730

Amount tipped to the caterers = 18% of 730

                                                   = 18/100 × 730

                                                   = $131.40

Total cost of dinner = 730 + 131.40

Total cost of dinner = $861.40

Hence, $861.40 is the total cost of the dinner including tip.

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Answer:

-152

Step-by-step explanation:

Given that h(t) = 161-4t and g(t) = 3-2t,

g(-1) = 3-2(-1) = 3+2 = 5

h(1) = 161-4(1) = 161-4 = 157

Therefore, g(-1)-h(1) = 5 - 157 = -152

So the value of g(-1)-h(1) is -152

x and y​ are not proportional and the value of the card in 2011​ is $33.14.

Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is known as the "constant of proportionality".

Given that, when he retired in 2000 his card was worth ​$7.73. The value has increased by ​$2.31 each year since then.

Let the value of the card y in dollars and the number of years x the player has been in retirement.

Now equation is y=7.73+2.31x

When x=1

y=$10.04

When x=2

y=7.73+2.31(2)

y=$12.35

When x and y are proportional

1/10.04 ≠2/12.35

Now, the value of the card in 2011​

y=7.73+2.31(11)

y=$33.14

Hence, x and y​ are not proportional and the value of the card in 2011​ is $33.14.

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Answer:

B 4 times

Step-by-step explanation:

since the area is

side length × side length,

any doubling of the side length is included twice in this multiplication.

2×2 = 4

and so, answer B is correct. the new area will be 4 times the old one.

An example of a pattern rule is "add 3" which means that to find the next term in a sequence, you add 3 to the previous term.

A pattern rule is a mathematical relationship used to find the value of each term in a sequence. To describe certain sequences, a pattern rule can be established. This is an algebraic equation that enables you to quickly find the value of a term in a sequence using its rank.

To write a rule for a sequence, you need to identify the pattern. This involves looking at the differences between the numbers and seeing if there is a pattern of increasing or decreasing numbers. Once you have identified the pattern, you can then write a rule that expresses that pattern.

Examples of pattern sequences include the Fibonacci sequence (1,1,2,3,5,8,13,21,34, etc.), the even numbers (2,4,6,8,10, etc.), and the multiples of 3 (3,6,9,12,15, etc.).

To describe the pattern of a sequence, you need to look at the differences between the numbers and the pattern of increases or decreases. For example, in the Fibonacci sequence, the pattern is that each number is the sum of the two numbers before it so 1+1=2, 1+2=3, 2+3=5, etc.

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To solve the expression 4e + d + 12 - 2e for given values of d and e, we need to substitute the given values in place of the variables in the expression and then perform the calculations.

Given that d = 6 and e = 2

So, the expression becomes:

4(2) + 6 + 12 - 2(2)

Now we can perform the calculation:

8 + 6 + 12 - 4 = 10 + 12 = 22

Therefore, the value of the expression 4e + d + 12 - 2e when d = 6 and e = 2 is 22.

Answer:

[tex] \sf \: d + 2e + 12 = 22 [/tex]

Step-by-step explanation:

Now we have to,

→ Simplify the given expression.

The expression is,

→ 4e + d + 12 - 2e

Now we have to use,

→ d = 6

→ e = 2

Let's simplify the expression,

→ 4e + d + 12 - 2e

→ d + 4e - 2e + 12

→ (d) + (4 - 2)e + (12)

→ d + (2)e + 12

→ d + 2e + 12

→ 6 + 2(2) + 12

→ 6 + 4 + 12

→ 10 + 12 = 22

Therefore, the answer is 22.

Step-by-step explanation:

Rewrite in slope-intercept form. Subtract x x from both sides of the equation. Divide each term in −y=5−x - y = 5 - x by −1 - 1 and simplify.

On solving the provided question, we can say that in this circle the radius is [tex]7\pi /6[/tex] area = [tex]\pi r^2[/tex] =3.14*7/6*2/6*3.14*3.4 = 13.0365822222 = 12 units sq.

Every point in the plane that is a certain distance away from a certain point forms a circle (center). It is, thus, a curve formed by points moving in the plane at a fixed distance from a point. At every angle, it is also rotationally symmetric about the center. A circle is a closed two-dimensional object where every pair of points in the plane are equally spaced out from the "center." A line that goes through the circle creates a specular symmetry line. At every angle, it is also rotationally symmetric about the center.

here,

in this circle the radius is [tex]7\pi /6[/tex]

area = [tex]\pi r^2[/tex] =3.14*7/6*2/6*3.14*3.4 = 13.0365822222 = 12 units sq.

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Answer:

2(3b+6) =78 : b=11

-2(6c-3) = -72 : c=6.5

Step-by-step explanation:

They are correct

To meet, Armand and Jill will both travel for an equal length of time.

50t + 60t = 247.5 is the formula used to calculate the time, t, required for their meeting.

To meet Armand, Jill will travel 135 miles.

given that

Despite being 247.5 miles apart, Armand and Jill are heading in the same direction.

50 mph is the speed at which Armand is moving.

and Jill's vehicle is moving at a 60 mph pace.

Allow them to connect after t hours.

We understand that Distance=Speed*Time.

Armand traveled 50 miles, thus.

Jill traveled 60 t of distance.

Now that they are moving in that direction, do the following:

50t+60t=247.5--------------

(a)

1)To meet, Armand and Jill will both travel the same distance.

The value of 50t and 60t will differ for the same t, hence this statement is false.

2)Jill and Armand will both travel for an equal length of time to meet.

This is accurate because they will collide at the same time.

3)50t + 60t = 247.5 is the formula used to determine how long it will take for them to meet.

This statement is true.

4)They won't meet until 4.5 hours have passed.

We will calculate the value of t using equation (a) and determine if t=4.5 or not.

As 50t+60t=247.5

⇒ 110t=247.5

⇒ t=247.5/110=2.25

As a result, it will take 2.25 hours for them to finally meet.

Option 4 is therefore unsuitable.

5)To meet Armand, Jill will travel 135 miles.

Jill must travel 60 miles to meet Armand.

As t=2.25

60t = 60 x 2.25 = 135 miles.

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Answer:

the radius is 8.5

Step-by-step explanation:

54 divided by pie/3.14 = 17 (plus decimals)

17 Divide by 2 = 8.5

12b+12p can be written as (9b + 9p) + (3b + 3p) to show the fruit for Nathan's kebabs and Linda's kebabs separately.

Expressions in math are mathematical statements that have a minimum of two terms containing numbers or variables, or both, connected by an operator in between. The mathematical operators can be of addition, subtraction, multiplication, or division.

Given,

Each kebab needs the same number of blueberries, b, and the same number of pineapple pieces, p.

Total number of kebabs = 12

Fruits needed to make them = 12b + 12p

Fruits needed to make 3 kebabs by Linda = 3b+3p

If Linda makes 3 kebabs

then Nathan would make 12 -3 = 9 kebabs

Fruits needed make 9 kebabs by Nathan = 9b + 9p

thus, to show the fruit for Nathan's kebabs and Linda's kebabs separately, 12b + 12p can be written as

12b + 12p

= 9b + 3b + 9p + 3p

Grouping,

= (9b + 9p) + (3b + 3p)

Hence, (9b + 9p) + (3b + 3p) is the rewritten form of 12b+12p so that it shows the fruit for Nathan's kebabs and Linda's kebabs separately.

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The coordinate A , B and C will be A(2,2), B(2,6) and C(10,2)

A coordinate system is a method for determining how to position points or other geometrical objects on a manifold, such as Euclidean space, uniquely using one or more integers, or coordinates.

In order to make it simple to identify the points, a cartesian plane divides the plane space into two dimensions. The coordinate plane is another name for it. The horizontal x-axis and the vertical y-axis are the two axes of the coordinate plane. The origin is the place where these coordinate axes connect, and they split the plane into four quadrants (0, 0). Additionally, each point in the coordinate plane is denoted by the coordinates (x, y), where x represents the point's location in relation to the x-axis and y represents its position in relation to the y-axis.

Since it is factored by 2

The coordinate A , B and C will be

A (1*2, 1*2) = A(2,2)

B(2,6) and C(10,2)

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The number of orders of magnitude that the kilogram is as heavy as the microgram is 10⁹.

The kilogram and the microgram are multiples of the gram which is the basic unit for measuring the mass of objects.

The kilogram is a higher multiple of the gram whereas the microgram is a smaller multiple of the gram.

1 kilograms = 1000 grams

1 microgram = 1/1000000 gram

Hence,

1 microgram = 1/1000000 * 1/1000 kilograms

Therefore, the ratio of kilograms to micrograms is 10⁹ : 1

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The experimental probability that you are elected president and your friend is elected treasurer is obtained as follows:

Number of desired outcomes/50.

A probability is calculated as the division of the number of desired outcomes by the number of total outcomes.

The total number of outcomes for this problem is given as follows:

50.

As the number of randomly generated numbers is of 50.

The number of desired outcomes is the amount of the 50 numbers that have either 1 or 2 in the tens place, and also either 1 or 2 in the units place.

Hence the probability is given by the following fraction:

Number of desired outcomes/50.

The problem is incomplete and could not be found in any search engine, hence the answer was given in general terms.

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The right angle lies opposite to the greater side that is 6.5 cm. Therefore, the given sides are not of a right- angled triangle.

step1

for checking a triangle can be made by these sides you have to check if the longest side is smaller than or equal to the sum of other two sides i.e.

2.5cm+7cm=9.5cm

8.5cm>6.5cm

which means the triangle can be made by these sides

step2

As we know,

In a Right-angled Triangle: By Pythagoras Theorem,

hypotenuse² = base² + perpendicular²

As we know the hypotenuse is the longest side of the triangle, So

Hypotenuse = 6.5 cm

Verifying the Pythagoras theorem,

6.5²= 7²+ 2.5²

42.25=49+6.25

42.25=55.25

Hence it is not  a right-angled triangle.

The Right-angle lies on the opposite of the longest side (hypotenuse) So the right angle is at the place where 2.5 cm side and 7 cm side meet.

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Margie worked for 47 hours.

The given table is about the times recorded on the timesheet for the week.

We have to calculate the total time she worked for.

From 7:05 to 3:58

If 7:05 is a.m. then 3:58 will be 15:58 pm.

By subtraction of these timings we can get the number of hours she has worked.

15:58 - 07:05 = 8:53 (8 hours 53 minutes)

From 7:30 a.m. to 17:01 pm

17:01 - 07:30 = 9:31 (9 hours 31 minutes)

From 8:01 a.m. to 17:32 pm

17:32 - 08:01 = 09:31 ( 9 hours 31 minutes)

From 07:22 a.m. to 16:46 pm

16:46 - 07:22 = 09:24 (9 hours 24 minutes)

From 6:55 am to 16:31 pm

16:31 - 06:55 = 9:36 (9 hours 36 minutes)

Therefore, total time she worked = 8:53 + 9:31 + 9:31 + 9:24 + 9:36 = 44:175 (44 hours 175 minutes)

Now we will convert minutes to hours

175 minutes = 2 hours 55 minutes

So total working hours = 44 hours + 2 hours 55 minutes = 46 hours 55 minutes ≈ 47 hours

Therefore, Margie worked for 47 hours.

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As per the given discount rate, the discount amount is $500 and the sale price is $2000

The term discount in math is defined as the process of equals the difference between the price paid for and it's par value.

Here we have given a department store has its mid year sale.

And here we have given that a knapsack originally priced at 2500 has a discount rate of 20%

Here let us consider that x be the discount, and then it can be calculated as,

=> discount amount = original price x 20%

Here we have to apply the values on the equation, then we get,

=> discount amount = 2500 x 20/100

=> discount amount = 500

Therefore, the sales price is calculated as,

=> Sales price = original price - discount price

=> sales price = 2500 - 500

=> sales price = 2000

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Therefore ,the solution to the given problem of linear equation comes out to be m =1,b =24, z = 21 and r =-7.

A function is said to be linear if it can be written algebraically as y=mx+b. The y-intercept is m, and the slope is B. Because y and x are both elements in the previous sentence, it is widely termed to as a 2 different equation system. Linear equations featuring two variables are known as bivariate equations. Two examples of the many applications of linear equations are x + z = 2 , 3z - y + z = 3. If a mathematical equation has the form y=mx+b, where m stands for the slope and b for the y-intercept, it is said to be linear. The equation is represented as Y=mx+b, where m denotes the elevation and b the y-intercept.

Here,

Given :

=> 6m =6

=> m =1

2)

=>b/-8 =-3

=> b =24

3)

=>3/7 * z  =9

=> z = 9 * 7 /3

=> z = 21

4)

=> -5/7 *r = 5

=> r =-7

Therefore ,the solution to the given problem of linear equation comes out to be m =1,b =24, z = 21 and r =-7.

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Yes, the given statement that prime number is infinite is true.

As given in the question,

Let us consider there are finite prime numbers.

The finite prime numbers be P₁ , P₂, P₃ , ......., Pₙ

Now let us consider there exist a number which represents the product of all the given numbers

P =  P₁ × P₂ × P₃ × .......× Pₙ

To make P as a prime number add 1 to it.

P = P₁ × P₂ × P₃ × .......× Pₙ + 1

It represents that P is the next prime numbers to the given 'n' prime number.

This implies that

Out supposition is wrong.

Therefore, there exist infinite number of prime numbers.

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Here is a math function to find the height of a stack of x chairs:

y = (x/10)h

y = (x/10)h

where:

This function calculates the total height of the stack by dividing the number of chairs in the stack (x) by 10, and then multiplying by the height of one chair (h).

This is because we have assumed that groups of 10 chairs will take up one unit of height.

Alternatively, if the number of chairs in the stack is not divisible by 10, we can use the ceiling function to round up to the nearest multiple of 10

y = ceil(x/10)h

where:

ceil(x) = smallest integer greater than or equal to x

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In mathematics, there are several types of inequalities that are commonly studied, including linear inequalities, quadratic inequalities, absolute value inequalities, rational inequalities, logarithmic inequalities and trigonometric inequalities.

Linear inequalities: These are inequalities involving a linear function and a single variable. They can be represented in the form of "ax + b > c" or "ax + b < c" where a, b, and c are constants, and x is the variable.

Quadratic inequalities: These are inequalities involving a quadratic function and a single variable. They can be represented in the form of "ax^2 + bx + c > 0" or "ax^2 + bx + c < 0" where a, b, and c are constants, and x is the variable.

Absolute value inequalities: These are inequalities involving the absolute value of a variable or expression. They can be represented in the form of "|x| > a" or "|x| < a" where x is the variable and a is a constant.

Rational inequalities: These are inequalities involving a rational function (a function with a fraction) and a single variable. They can be represented in the form of "f(x) = (ax+b)/(cx+d) > 0" or "f(x) = (ax+b)/(cx+d) < 0" where a, b, c, d are constants, and x is the variable.

Logarithmic inequalities: These are inequalities involving logarithmic functions and a single variable. They can be represented in the form of "loga(x) > b" or "loga(x) < b" where a and b are constants, and x is the variable.

Trigonometric inequalities: These inequalities involve trigonometric functions such as sine, cosine, and tangent. These inequalities can be used to describe the range of possible values for an angle or a real-valued function.

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Answer:

t=2

Step-by-step explanation:

t>o and t² - 4 = 0

[tex]t^2=4[/tex]

[tex]t=\sqrt{4}[/tex]

[tex]t=+2/-2[/tex]

As t>0

Therefore, t=+2

Thus, if t>o and t² - 4 = 0, the value of t=+2

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The quotient of 3 8 and 2 3 is equal to 4. This can be determined by dividing 3 8 by 2 3 and simplifying the fractions. The result is 4.

To determine the quotient of 3 8 and 2 3, begin by dividing 3 8 by 2 3. This can be done by multiplying the numerator (3) and denominator (8) of 3 8 by the reciprocal of 2 3, which is 3 2. Doing this yields 9 16. Now, reduce the fraction by dividing both the numerator and denominator by the greatest common factor (GCF) of 9 and 16, which is 3. The result is 3 5. Finally, convert the fraction to a whole number by dividing the numerator (3) by the denominator (5). The result is 4. Therefore, the quotient of 3 8 and 2 3 is 4.

3 8 ÷ 2 3 = (3 × 3 2) ÷ (8 × 3 2) = 9 16 ÷ 9 2 = 9 16 ÷ 3 = 3 5 = 3 ÷ 5 = 4

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Answer: 4x+y-6=0

Step-by-step explanation:

To find the equation of the line that is parallel to 4x+y+1=0, we need to work in terms of slope-intercept form, which is y=mx+b.

4x+y+1=0       [subtract both sides by 4x]

y+1=-4x          [subtract both sides by 1]

y=-4x-1

Our original equation is in terms of y=mx+b.

The properties of parallel lines is that they NEVER touch. Therefore the slope must be the same. The y-intercept can be different though.

y=-4x+b           [plug in (1,2)]

2=-4(1)+b          [multiply]

2=-4+b             [add both sides by 4]

b=6

We can fill in our equation now.

y=-4x+6

We need to make our equation match the original, so let's manipulate it.

y=-4x+6           [add both sides by 4x]

4x+y=6            [subtract both sides by 6]

4x+y-6=0

Therefore 4x+y-6=0 is the answer.

Our Pythagorean triplets will be (3,4,5) and (6,8,10).

So what is the Pythagorean triplet?

The square of the greatest number in a Pythagorean triplet equals the sum of the squares of the other two numbers.

The greatest side in a right-angled triangle is called the hypotenuse.

So, in our first triplet (3,4,5) the greatest side is 5. So, hypotenuse = 5.

=  [tex]hypotenuse^{2}[/tex] = [tex]5^{2}[/tex] = 25.

Now, [tex]3^{2}[/tex] + [tex]4^{2}[/tex] = 9 + 16 = 25.

So, [tex]5^{2}[/tex] = [tex]3^{2}[/tex] + [tex]4^{2}[/tex].

Thus (3,4,5) is a Pythagorean triplet.

In the second case (6,8,10) hypotenuse = 10.

= [tex]hypotenuse^{2}[/tex] = [tex]10^{2}[/tex].

Now, [tex]6^{2}[/tex] + [tex]8^{2}[/tex] = 36 + 64 = 100.

So, [tex]10^{2}[/tex] = [tex]6^{2}[/tex] + [tex]8^{2}[/tex].

Thus (6,8,10) is a Pythagorean triplet.

In the Third case (8,10,12) Hypotenuse = 12.

= [tex]hypotenuse^{2}[/tex] = [tex]12^{2}[/tex] = 144.

Now, [tex]8^{2}[/tex] + [tex]10^{2}[/tex] = 64 + 100 = 164.

So, [tex]12^{2}[/tex] [tex]\neq[/tex] [tex]8^{2}[/tex] + [tex]10^{2}[/tex].

Thus (8,10,12) is not a Pythagorean Triplet.

Therefore our two results (3,4,5) and (6,8,10) are Pythagorean triplets.

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