From question 28 -29
Help please

The proportional relationship y = 200x, showing the number of calories y burned as a function of the time swimming of x hours, is given as follows:

A proportional relationship is a special case of a linear function, as even though it has a constant rate of change, the intercept is of zero.

The general format of a proportional relationship is given as follows:

y = kx.

In which the constant of proportionality k represents the constant rate of change.

Supposing that for each hour swimming, the person spends 200 calories, the constant is given as follows:

k = 200.

Hence the proportional relationship that gives the number of calories y burned as a function of the time swimming of x hours is given as follows:

y = 200x.

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The expressions that could represent how much snowfall Delphine had at her house in March will be:

1.4f

f + 0.4f

Expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations.

Since Delphine's house had 40 percent more snowfall than in February. Delphine's house had f centimeters of snowfall in February.

The expression will be:

f + (40% × f)

f + 0.4f

= 1.4f

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The probability that two cards will be drawn at random, without replacement, is 13/18.

The ratio of good outcomes to all possible outcomes of an event is known as the probability. The number of positive results for an experiment with 'n' outcomes can be represented by the symbol x.

The probability of an event can be calculated using the following formula.

Probability(Event) = Positive Results/Total Results = x/n

In order to better grasp probability, let's look at a straightforward application.

Let's say we need to forecast if it will rain or not. Either "Yes" or "No" is the appropriate response to this query.

There is a chance that it will rain or not. Here, probability can be used. Using probability, one may forecast the results of a coin toss, a roll of the dice, or a card draw.

According to our answer-

P(at least 1 green) = 1 - P(no green)

P(no green) = draw yellow on both draws

= P(draw yellow on 1st draw) * P( draw yellow on 2nd draw, given draw yellow on 1st draw)

= 5/9 * 4/8 = 20/72 = 5/18

P(at least 1 green) = 1 - 5/18

= 13/18

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The vertex (3, -16) is the maximum point on our quadratic equation.  

When we compare the given Quadratic function with the general form

ax² +bx +c,    

If the value of a is positive then the Quadratic function will have a minimum value, and the graph of the function opens up.  

If the value of a is negative then the Quadratic function will have a maximum value, and the graph of the function opens downwards.  

Here we have

f(x) = -2(x - 5)(x-7)

f(x) = -2 [x²-7x - 5x + 35 ]

f(x) = -2 [x²-12x + 35 ]

f(x) = -2x² + 12x - 35  

Compare f(x) with ax²+ bx + c  

=> a = -2, b = 12, and c = - 35  

Here,

a = -2 is a negative value then the function f(x) will have maximum value    

And the graph of the function opens down.  

The formula for the x coordinate of the vertex = -b/2a  

The coordinate of x = -(12)/2(-2) = 3    

Now substitute x = 3 in f(x) to find y-coordinate

=> f(3) = - 2(3)² +12(3) - 35    

=> f(3) = -2(9) + 36 - 35          

=> f(3) = - 16    

Therefore, y-coordinate = -16            

Therefore,

The vertex (3, -16) is the maximum point of the quadratic equation.              

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Yes, the point (2,4) is a solution to the system of inequalities in the graph.

How to solve inequalities?

By definition, an inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions.

The given parameters include

Points (4,2)

y<2x+3

y≥-4x+1

Solving these inequalities

y<2x+3

Let y<0

0<2x+3

-3<2x

x<-3/2

(-3/2,0)

when x<0

y<2(0)+3

y<3

(0,3)

From equation 2

y≥-4x+1

x≥0

y≥0+1

y≥1

(0,1)

y≥0

0≥-4x+1

x≥-1/4

(-1/4,0)

Using the coordinates to draw the graphs the lines cut each other at points where (4,2)

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Answer:

375

Step-by-step explanation:

let a garben table cost x

a bench cost x+47

x+x+47=703

2x=703-47

2x=656

x=656÷2=328

bench: 328+47=375

The percentage change in the number of visitors = 42.30%.  

The prior value's increase or reduction is indicated by the percentage change. The percentage increase may be used to calculate how much it has increased if the present value exceeds the previous value.

The percentage decline may be used to calculate how much it has reduced if the current value is smaller than the prior value.

The formula for Percentage change in case of increase is given by

Percentage Increase = ( Increase/Original Number) × 100

Here we have

On Monday a museum had 150 visitors

On Tuesday it had 260 visitors

The number of visitors increased from Monday to Tuesday

= 260 - 150 = 110  

By the given formula percentage of change can be calculated as given below

Percentage Increase = (110/260) × 100

= 42.30%

Therefore,  

The percentage change in the number of visitors = 42.30%.  

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Answer:

B is a variable it is a letter

5 is a coefficient because it's in front of the variable

3.79 is a term because it is just numbers by itself

Step-by-step explanation:

Two index that are equivalent to the index (x^{1/3)² are:- 1) X⁽²/³⁾, 2) (∛X)²

What are index ?

An index can be assigned to a number or variable. A value raised to the power of a variable's (or a constant's) value is its index. The exponents or powers are other names for the indices. It displays how many times a particular number must be multiplied. It takes the following form:

a(m) = a × a × a ×……× a (m times)

The base in this case is a, and the index is m.

The index instructs a certain integer (or base) to be multiplied by itself a specified number of times, where the number of times is determined by the index raised to the base. It is a condensed way of expressing large sums of information and calculations.

[tex]X^b . X^A. X^n = X^b^a^n[/tex]

Example: 2^3 = 2 × 2 × 2 = 8

[tex][X^\frac{1}{3} ]^2[/tex][tex]= X^\frac{2}{3}[/tex]

We can also write the same index as;

[tex]A^\frac{1}{n}=\sqrt[n]{A}[/tex]

[tex]X^\frac{2}{3}=[\sqrt[3]{x}]^2[/tex]

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Answer: 59.50=8.25x + 10

Step-by-step explanation: so we know that It is 8.25 per sandwich making it the constant. Then we know that 10 is the the deléguente fee making it the y-intercept. Finally this all has to equal to 59.50. X represents how many sandwiches the person ordered.

Preeti informs Shari that there are risks associated with methamphetamine use, such as the induction of symptoms associated with Psychosis

Psychosis is a combination of symptoms resulting in an impaired relationship with reality. It can be a symptom of serious mental health disorders. People who are experiencing psychosis may have either hallucinations or delusions.

If someone is experiencing an episode of psychosis, the main symptoms include:

According to the question,

Preeti discovers that her roommate Shari recently experimented with methamphetamine. Preeti, worried about her roommate, informs Shari that there are risks associated with methamphetamine use, such as the induction of symptoms associated with Psychosis

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Answer:

44

Step-by-step explanation:

80*55/100 = 44

Answer:78

Step-by-step explanation:

The range of the sine function is:

R: {x ∈ R| -1 ≤ x ≤1}

It can also be written as [-1, 1], so that is the correct option.

For a function y = f(x) we define the range as the set of the outputs, this is, the set of the possible values of y.

In this case, our function is y = sin(θ)

Remember that the maximum value of the sine is sin(π/2) = 1

And the minimum is sin(3π/2) = -1

So the maximum value of y is 1 and the minimum is -1, thus, the range is the set of all real numbers between these two, then we can write the range as:

R: {x ∈ R| -1 ≤ x ≤1}

It can also be written as [-1, 1]

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15000 Cls should we expect to include the true mean if we compute the 60% confidence interval for each buffalo count (i.e., data sample).

Given that,

We have to calculate let's now examine the Buffalo's collective data. How many Cls should we expect to include the true mean if we compute the 60% confidence interval for each buffalo count (i.e., data sample).

We know that,

Theoretical hits= confidence interval × total no. of buffaloes

= 0.6×(buffaloes)

Sample hits = count among total no. of buffaloes, from which how many of inside 25000, that will be sample hits.

So,

=0.6×25000

=15000

Therefore, 15000 Cls should we expect to include the true mean if we compute the 60% confidence interval for each buffalo count (i.e., data sample).

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Answer:

96

Step-by-step explanation:

21+75

The average change in the height of the rainwater is 1.25 inches per day

What is an Equation of a line?

The equation of a line is expressed as y = mx + b where m is the slope and b is the y-intercept

And y - y₁ = m ( x - x₁ )

y = y-coordinate of second point

y₁ = y-coordinate of point one

m = slope

x = x-coordinate of second point

x₁ = x-coordinate of point one

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

Given data ,

Let the equation of line be represented as A

Now , the value of A is

The initial height of the rainwater measured = y₁

The value of y₁ = 24.83 inches

The final height of the rainwater measured = y₂

The value of y₂ = 12.08

The change in height = y₁ - y₂

Substituting the values in the equation , we get

The change in height = 6.75

The number of days = 5 2/5 days

The number of days = 27/5 days = 5.4 days

So , the equation will be

The average change in the height of the rainwater = change in height / number of days

Substituting the values in the equation , we get

The average change in the height of the rainwater = 6.75 / 5.4

The average change in the height of the rainwater = 1.25 inches per day

Hence , the average change is 1.25 inches per day

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According to the Dietary Guidelines for American 2015, you should limit your fat intake to 25% - 35% of your total calories. The correct option is B.

Food-based dietary guidelines also known as dietary guidelines are intended to serve as a foundation for public food and nutrition policies, health and agricultural policies, and nutrition education programs aimed at promoting healthy eating habits and lifestyles.

Calories are the units of energy released by your body when it digests and absorbs food. The higher the calorie content of a food, the more energy it can provide to your body. When you consume more calories than you require, your body stores the excess calories as fat. Even fat-free foods can be high in calories. In this case, the fay should not be more than 35%.

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Answer:

[tex]y=\frac{8}{11} x-3[/tex]

Step-by-step explanation:

Plug in the slope and point into the equation y=mx+b to solve for the y-value of the y-intercept. Plug in the x value for x, the y value for y, and the slope for m.

[tex]5=\frac{8}{11} (11)+b[/tex]

[tex]5=8+b[/tex]

[tex]-3=b[/tex]

After solving that, you can plug the slope and y-intercept back into the equation to solve for y.

[tex]y=\frac{8}{11} x+(-3)[/tex]

[tex]y=\frac{8}{11} x-3[/tex]

Answer:

Step-by-step explanation:

Slope-intercept form is y=mx+b where m is the slope and b is the y-intercept. We have all the information we need except for the y-intercept, so we can plug in our point to solve for the y-intercept.

------------------------------------Solving for y-intercept------------------------------------

Plugging in the point gives us [tex]5=8/11*11+b[/tex]. Simplifying this equation results in [tex]5=8+b[/tex]. To solve for b, we subtract 8 from both sides, giving us that [tex]b=-3[/tex].  We now have both the slope and the y-intercept, so our equation is y = 8/11x -3.

Feel free to contact me with any questions about my answer. I hope this helps!

To determine the gain or loss on the redemption of the bonds, you need to compare the redemption price to the carrying value of the bonds. The carrying value of the bonds is the amount that the bonds are recorded as being worth on the issuing corporation's balance sheet. This is calculated by adding the Bonds Payable balance and the Premium on Bonds Payable balance.

In this case, the carrying value of the bonds is $810,000 + $8,910 = $818,910. If the bonds are redeemed at a price of $102, the gain or loss on the redemption can be calculated as follows:

Gain or loss on redemption = Redemption price - Carrying value of bonds

= $102 - $818,910

= -$817,810

Since the gain or loss on the redemption is a negative number, this indicates that the redemption price was lower than the carrying value of the bonds, resulting in a loss. The correct answer is therefore: c. $7,290 loss.

The equation of certain hyperbola with center ( -2,0) is (x+ 2)²/25 - (y)²/ 9 = 1

According to the question,

Equation of hyperbola is given : (x-h)²/a² - (y-k)²/b² = 1

Center of hyperbola = (-2,0)

Focus = (-2√34 , 0)

vertex = (-5,0)

This hyperbola is from left to right

As center is (-2,0) means h = -2 and k = 0

Hyperbola are symmetric ,

Second focus = (-2√34 , 0)

Second vertex = ( 5,0)

Vertex are (a,b) => a = 5

Foci of general hyperbola are ( h ± ck)

=> ( h ± c, k) =  (-2√34 , 0)

=> -2 ± c = -2√34

=> c = ± √34

Also , c^2 = a^2 + b^2

=> 34 = 25 + b^2

=> b^2 = 9

=> b = 3

Substituting all the values ,

Equation of Hyperbola is (x+ 2)²/25 - (y)²/ 9 = 1

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what do you mean by &?

if its multiplication than

2 × 1/4 = 0.50 or 1/2

4+ (-2) = 2

so the answer is:

2 = 1/2

false

Let n be a positive integer. Consider the  n+1 integers 1,11, 111,1111,... (where the last integer in this list is the integer with n+1 - 1s in its decimal expansion).

Note that there are n possible remainders when an integer is divided by n. Because there are n+1 integers in this list, by the pigeonhole principle there must be two with the same remainder when divided by n. The larger of these integers the smaller one is a multiple of n, which has a decimal expansion consisting entirely of 0s and 1s.

For example, take n=7

we have, 1,11, 111,1111,...,11111111

The remainder possible when any number is divided by 7 is 0,1,2,3,4,5,6

These are the remainders when the numbers in the first list are divided by 7 gives 1,4,6,5,2,0,1,4.

Now you can see that we have 7 pigeonholes {0,1,2,3,4,5,6} and 8 pigeons {1,11, 111,1111,...,11111111} so there needs to be at least one pigeonhole where 2 pigeons will reside.

In this case, we have 11%7=4 and 11111111%7=4

Their difference, i.e. 11111111-11=11111100 is divisible by 7.

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Based on the elevation of the scientist after descending and traveling directly up, the number of feet she needs to ascend to get to sea level will be; 82.7 feet.

To find the number of feet that the scientist needs to travel up to get back to sea level, you need to find her current elevation.

The current elevation of the scientist is:

= 0 - 21.1 + 19.1 + 80.7

=  82.7 feet

In other words, the scientist is 82.7 feet below sea level.

To get back to sea level therefore, the scientist will need to travel 82.7 feet directly up.

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The statement "Δ ABD = Δ ACB by SSS" is true about the diagram.

The statement "Δ ABD = Δ ACB by SSS" is true about the diagram. SSS stands for Side-Side-Side, which is a congruence postulate stating that if three sides of one triangle are congruent to the corresponding sides of another triangle, then the triangles are congruent. In the given diagram, Δ ABD and Δ ACB are congruent because their corresponding sides AB, BD, and AC are equal in length.

This means that the triangles have the same shape and size, but they may be oriented differently. The SSS congruence allows us to conclude that all corresponding angles and other corresponding sides of the two triangles are also congruent. Therefore, we can say that Δ ABD is congruent to Δ ACB based on the Side-Side-Side congruence.

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Answer:

Step-by-step explanation:

i need help on that too

The dimensions of the piece are l = 8 and b =4.

What are dimensions?

The minimal set of coordinates required to specify any point within a mathematical space is the dimension of that space. Because only one coordinate is required to specify a point on a line, it has a dimension of one.

Here,

Let the length of a rectangular piece of metal = l cm

And the breadth of a rectangular piece of metal = b cm

Perimeter of a rectangular piece of metal = 2(l+b) = 24 cm

Or, l+b = 24/2

Or, l+b = 12 -------- (1)

Area of a rectangular piece of metal = l×b = 32 cm²

Or, l×b = 32 ------- (2)

We know that,

(l - b)² = (l+b)² - 4×l×b

(l - b)² = (12)² - 4×32

(l - b)² = 144 - 128

(l - b)² = 16

(l - b)² = 4

l - b = 4 --------- (3)

Adding equations (1) and (3), we get

l+b+l-b = 12 + 4

2l = 16

l = 8

Now, we put the value of l in equation(1) and we get

8 + b = 12

b =4

Hence, the dimensions of the piece are l = 8 and b =4.

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Answer: ???

Step-by-step explanation:

You have to put in the numbers for the percentages.

There are 36 possible outcomes when rolling two dice, and only 1 of those outcomes results in a double. Therefore, the probability of rolling a double is 1/36, or approximately 0.028.

If you are willing to pay $20 to roll the dice, then you are effectively paying a premium of $20 for a probability of 0.028 of winning. This means that the expected value of rolling the dice is 0.028 * $20 = $0.56.

Therefore, you should be willing to pay up to $0.56 for the privilege of rolling the dice. Rounded to the nearest cent, this is $0.56.

So the correct statement is A and D

What is a Quadrilateral?

A closed quadrilateral has four sides, four vertices, and four angles. It is a form of polygon. In order to create it, four non-collinear points are joined. Quadrilaterals always have a total internal angle of 360 degrees.

A quadrilateral is a flat shape with four edges and four corners, also known as vertices. The quadrilateral has angles at each of its four vertices, or corners.

The Latin words quadra, which means four, and latus, which means sides, are combined to form the English term quadrilateral. A quadrilateral does not always have to have equal lengths on each of its four sides. 

These are the several kinds of quadrliaterals:

Quadrilateral A'B'C'D' = D8(ABCD) as we know two quadrilateral will be congruent in case of unit length scaling factor and corresponding side length corresponds like AB,BC,CD,DA

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