please help me with this

The total cost of downloading 20 songs is $45.

The total cost of downloading ss songs is $11 + $1.0ss.

What does the word "cost" mean?

During the manufacturing or production of a company's goods and services, every expense incurred by the company is referred to as a cost.

                            In simplest terms, it is the amount of money that businesses invest in buying and selling goods.

The total cost of the of downloading songs is the sum of the fee per month and the cost of downloading songs.

Total cost of downloading 45 songs = cost per month x cost of downloading 45 songs

$11 + ($1 x 45)

$11 + $45

$56

Total cost of downloading ss songs = $11 + ($1 x ss)

$11 + $1ss

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Answer:

420 Square Units

Step-by-step explanation:

7*12*5 = 420 units

For the function  \(A(t)=4000e^0^.^0^4^t\) the value of A'(8) is $220 and the value of \(A'(t)=160e^0^.^0^4^t\)

The given function is \(A(t)=4000e^0^.^0^4^t\) gives the balance after t years.

The initial investment is 8000

4% is the compounded interest.

Now differentiate with respect to t

\(A'(t)=0.04(4000)e^0^.^0^4^t\)

\(A'(t)=160e^0^.^0^4^t\)

Now let us find the value of A'(8)

Plug in t as 8

\(A'(8)=160e^0^.^0^4^(^8^)\)

A'(8)=220.3

Hence, the value of A'(8) is $220 and the value of \(A'(t)=160e^0^.^0^4^t\)

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Answer:

Width= 4

length= 12

perimeter= (16+4)×2

3x+3x+x+x=32, let x be the dimensions

8x=32

x=4

so 3(4)=12

9514 1404 393

Answer:

  c.  20 days

Step-by-step explanation:

Divide the total available rice by the rate of its use:

  time = quantity/(rate of use)

  (15 lb)/(0.75 lb/day) = (15/0.75) days = 20 days

Answer:

Hello! :) have a good day!

Exact Form:

3/2

Decimal Form:

1.5

Mixed Number Form:

1 1/2

Answer:

1  1/2

Step-by-step explanation:

2 1

4

×

2

3

=  

9

4

×

2

3

=  

9 × 2

4 × 3

=  

18

12

=  

18 ÷ 6

12 ÷ 6

=  

3

2

=  

1 1

2

Answer:

19cm

Step-by-step explanation:

The volume of the give cone is 21.40 cm³

A cone is a shape formed by using a set of line segments  or the lines which connects a common point, called the apex or vertex, to all the points of a circular base(which does not contain the apex). The distance from the vertex of the cone to the base is the height of the cone.

Given that, A right circular cone has a height of 10 centimetres and a base of 9 cm.

The circumference of the base is 9 cm

Therefore, 2πr = 9

r = 9/3.14×2

r = 1.43 cm

Volume of a cone = πr²h/3

V = 3.14(1.43)²10/3

V = 21.40 cm³

Hence, The volume of the give cone is 21.40 cm³

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Considering the figure the value of angle b is

According to the vertical angle theorem, the opposing angles of two crossing lines must have the same value, or be congruent.

hence angle a = angle y

Then from exterior angle of a triangle theorem: If a triangle's side is created, the outside angle that results is equal to the sum of the two opposite internal angles.

angle b = angle a + 90

= 34 + 90

= 124 degrees

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Answer:

q = - 5

Step-by-step explanation:

Answer:

Continuous.

Step-by-step explanation:

A continuous data is any data set having a finite or infinitely many possible values and those values cannot be counted, meaning they are uncountable. Any quantity such as height, volume, weight, density, length, pressure, temperature, speed, distance, time are generally a continuous data.

Hence, the speed of a car that travel 50 miles per hour for 3 hours represents a continuous data because the data can take on any value in an interval.

On the other hand, a discrete data is any data set in which the number of possible values are either finite or countable. Thus, a discrete data can only take on specific values. For example, the value of a fair die, number of sweets in a jar, number of eggs in a crate etc.

In this scenario, a car travels at a speed of 50 miles per hour for 3 hours.

Hence, the graph that describes this situation is continuous and each point are connected through a continuous line.

Answer: Hence, the time taken by the experienced crew would be 9 hours.

Step-by-step explanation:

Answer:

84

Step-by-step explanation:

(x/4) + 3 = 24

so in this case try and make x the subject or in other words try to leave x on one side of the equation.

(x/4) = 24 - 3

(x/4) = 21

now multiply 21 by 4 using cross multiplication

so x= 84

Answer:

4x=80 and 5x=100

Step-by-step explanation:

4x+5x=180

9x=180

1/9 (9x)=1/9 (180)

x=20

4(20)=80

5(20)=100

The answer of the given question based on the expression is , the value of the summation when m = 3 is 137.

In mathematics, an expression is a combination of numbers, variables, and operators that represents a value or a set of values. It can be a simple combination of numbers and variables or a more complex combination involving mathematical operations like addition, subtraction, multiplication, division, exponents, and roots. Expressions can be used to represent a wide range of mathematical concepts, from simple arithmetic to complex functions and equations.

To evaluate the summation 1(1!) + 2(2!) + 3(3!) + 4(4!) + m(m!), where m = 3, we substitute m = 3 and simplify:

1(1!)+2(2!) +3(3!) +4(4!) +3(3!)

= 1(1) + 2(2) + 3(6) + 4(24) + 3(6) (since n! = n(n-1)! for all positive integers n)

= 1 + 4 + 18 + 96 + 18

= 137

Therefore, the value of the summation when m = 3 is 137.

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The solution of the system of equations is x = 4 and y =-6

The system of equations is given as:

4x - 5y = 46

-4x - 4y = 8

Add the two equations, to eliminate x

So, we have:

4x -4x - 5y - 4y = 46 + 8

Evaluate the like terms

-9y = 54

Divide both sides by - 9

y = -6

Substitute y = -6 in the equation 4x - 5y = 46

4x - 5(-6) = 46

This gives

4x + 30 = 46

Evaluate the like terms

4x = 16

Divide by 4

x = 4

Hence, the solution of the system of equations is x = 4 and y =-6

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Answer:

y = -f(x+2).

Step-by-step explanation: i did the test

If Catarina’s boat has come untied and floated away on the lake. She is standing atop a cliff that is 35 feet above the water in a lake. Approximately the distance from the cliff is Catarina’s boat is : 63.6ft.

Distance can be defined as how far an object is from another object.

Now let find the distance:

AE/CD = BC/DE

Hence,

5.5/3.5 = 10/DE

Cross multiply

AE = 350/5.5

AE = 63.6ft

Therefore we can conclude that the distance is 63.6ft.

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Answer:If (x + 1) is a factor of the polynomial p(x), then p(x) can be written as:

p(x) = (x + 1) q(x)

for some polynomial q(x). By substituting x = -1 into this expression, we can find the value of c:

p(-1) = (-1 + 1) q(-1) = 0 q(-1) = 0

So,

0 = 5(-1)^4 + 7(-1)^3 - 2(-1)^2 - 3(-1) + c

= -5 + 7 - 2 + 3 + c

= c = 3

So, the value of c that makes (x + 1) a factor of the polynomial p(x) = 5x^4 + 7x^3 - 2x^2 - 3x + c is c = 3.

Answer:

y=10x+0.4

Step-by-step explanation:

I did the test too.

Answer:

y=10x+0.4

Step-by-step explanation:

Answer:

1/7

Step-by-step explanation:

We can use the slope formula

m = ( y2-y1)/(x2-x1)

   = ( 6-5)/(9-2)

   = 1/7

Answer:

i think its C

Step-by-step explanation:

Answer:

I think you need to know the value of X to get this answer.

Step-by-step explanation:

Answer:

NO.

Step-by-step explanation:

The Professor's hypothesis:

An introductory course in Logic will affect college students with their other studies (will affect their Great Point Average - GPA).

25 students are used as the experimental group while the rest of the class are the control group.

The mean GPA in a sample size (SS) of 6 is = 2.58

The mean GPA in the full sample size of 25 would be = 10.75 by crossmultiplying.

This makes me believe the question was written wrongly. I assume SD (standard deviation) of 0.6 instead of SS (sample size) of 6.

Going by this, if standard deviation is 0.6 then the interval within which the GPA of the experimental group (the 25 students) falls is:

[2.58 - 0.6] to [2.58 + 0.6]

= 1.98 to 3.18

The rest of the graduating class (the control group) had a mean GPA of 2.33

Can the professor conclude that the GPA for the sample is significantly different from that of the control group?

The answer is NO because the GPA of the control group falls within the GPA interval of the experimental group!

Answer:

A

Step-by-step explanation:

I think letter C the die is consisting of 6 number 1,2,3,4,5,6 and the coin H,T. The probability of tossing a coin are only two while rolling a die has six probability that it will land either three or fou.r

Using proportions, it is found that the difference in the total costs of the 12 pairs of shoes between the two stores is of $46.77.

A proportion is a fraction of a total amount.

At Super Sports, each pair of shoes costs $72.50, with a discount of 20%(multiplication by 0.8) and a sales tax of 6.5%(multiplication by 1.065). Hence, the total cost of the 12 pairs is given by:

Cs = 12 x 72.50 x 0.8 x 1.065 = $741.24.

At Double Dribble, each shoe costs $54.75, plus a 9% processing free(multiplication by 1.09), plus a shipping fee of $5.99 for each pair, hence the total cost is given by:

Cd = 12 x (1.09 x 54.75 + 5.99) = $788.01.

The difference is given by:

$788.01 - $741.24 = $46.77.

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The alternative hypothesis is a two-tailed hypothesis because it examines whether there is a difference in effectiveness, which can be positive or negative.

A null hypothesis is a type of statistical hypothesis that asserts that a specific set of observations has no statistical significance. Sample data is used to assess the viability of theories. H0 represents what is referred to as "zero" on occasion. The researchers make the assumption that there may be a relationship between the factors. The null hypothesis, on the other hand, claims that no such relationship exists. Although it may not appear to be significant, the null hypothesis is an important part of research.

The following hypotheses would be appropriate for testing the difference in effectiveness between brand-name and generic ibuprofen:

The null hypothesis (H0) states that there is no difference in the mean effectiveness of brand-name and generic ibuprofen.

Alternative hypothesis (Ha): The mean effectiveness of brand-name ibuprofen and generic ibuprofen differs.

These hypotheses can be expressed symbolically as follows:

H0: _generic = _brand-name\\

Ha: _trademark _generic

Where _brand-name denotes the population mean efficacy of brand-name ibuprofen and _generic denotes the population mean efficacy of generic ibuprofen. The alternative hypothesis is a two-tailed hypothesis because it examines whether there is a difference in effectiveness, which can be positive or negative.

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Answer:
H0: μ1 – μ2 = 0

Ha: μ1 – μ2 ≠ 0

Step-by-step explanation:

took the quiz :)

X varies directly as y , that x = 9 when y = 3,the value of x when y = 12 by  the constant of Variation , value of x is 36.

X  varies directly as y, it means that there is a constant ratio between x and y. We can express this relationship using the formula:

x = ky

where k is the constant of variation.

To find the value of k, we can use the given information that x = 9 when y = 3. Substituting these values into the formula, we have:

9 = k * 3

Solving for k, we divide both sides of the equation by 3:

k = 9/3

k = 3

Now that we have the value of k, we can find x when y = 12 by substituting it into the formula:

x = 3 * 12

x = 36

Therefore, when y = 12, the corresponding value of x is 36.

if x varies directly as y and we are given that x = 9 when y = 3, we can find the value of x when y = 12 by determining the constant of variation (k) and using the formula x = ky. In this case, the constant of variation is 3, so when y = 12, x equals 36.

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Answer:i can's see it very well sorry kid

12

Step-by-step explanation:i dont know