3x - 4y = 7 , for x

15y + 1 = x , for y

Descriptive statistics is a one type of statistics which involve generalization of conclusions from small selected samples.

Inferential statistic is atype of statistic which involve summarization of data in numerical form.

The experimental probability that the next member surveyed will sign up for tennis is 0.3, based on the current data where 9 out of 30 members have signed up.

The question is asking for the experimental probability that the next member surveyed at the country club will sign up for tennis based on a survey of 30 members where 9 had already signed up for tennis.

To calculate the experimental probability, you divide the number of members who have signed up for tennis by the total number of members surveyed. So, the calculation would be:

The experimental probability is then calculated as 9/30, which simplifies to 0.3. Therefore, the correct answer is:

A. 0.3

We want to maximize C, which is C= 7x - 3y. Let's explore our intuition regarding how this will look. We know that both y and x are greater than or equal to zero, which means -3y will be a negative number (or 0) and x is a positive number (or 0). We want to get x as big as possible, given the constraints, we want y to be zero, if possible 

We see that, based on the constraints, y is greater than or equal to zero, but it has no other minimum value established. We only know that y and x add up to 5, and that y is less than or equal to (1/5)x + 2. That means y could be 0 and still satisfy the constraints. 

In order to maximize C, we want to be 5 as possible and y to be zero:

C = 7 (5) - 3(0)

C=35

Answer: Solving Systems Using Matrices Quiz Part 1

1. c) (5,0)

2. a) 20 of type A; 20 of type B

3. d) no solution

4. a) -5

5. d) 11 -12 7 5 12 -7

6. a) (-6,8)

Sample Response: A graphing calculator is more accurate than graphing by hand. If the slope and/or y-intercept is a fraction or decimal, it is more difficult to accurately graph by hand. Using a calculator might also be more time efficient because it might accept a line in any form. A calculator’s window can be adjusted quickly instead of having to redraw a graph by hand when adjusting the scale.

For time efficiency and to get a more precise solution.

There are two reasons.

1) In a graphing calculator you only need to input the functions and that's all, it will graph the functions for you, so it needs a lot less time than graphing by hand.

2) When you graph by hand, there is a limit in how much of an exact solution you can get (and there may be a mistake if the line is to thick or something like that). While in a graphing calculator you can find the exact point where the graphs intersect, so you will get a more precise solution with a graphing calculator.

These are the two reasons why using a graphing calculator may be better than graphing by hand.

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The ratio, x/y in the equation, if y ≠ 0 is: x/y = -2/3.

Solution of an equation is the value of a variable or two variables that makes an equation true.

Given:

3(x+y)=y

We are required to find the ratio, x/y if y ≠ 0.

Thus:

3(x+y)=y

Open bracket

3x + 3y = y

Subtract 3y from both sides

3x = y - 3y

3x = -2y

Divide both sides by 3

x = -2y/3

Divide both sides by y

x/y = -2/3

Therefore, the ratio, x/y in the equation, if y ≠ 0 is: x/y = -2/3.

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Final answer:

The corresponding angles theorem states angles in matching corners are equal when two parallel lines are intersected by a transversal. To prove this, use properties of parallel lines and transversals, and various established theorems. Euclidean postulates are employed, rather than the Pythagorean theorem or trigonometry.

Explanation:

To prove the corresponding angles theorem, one must understand that when two parallel lines are intersected by a transversal, the angles in matching corners are equal. These are called corresponding angles. For instance, suppose you have two parallel lines L1 and L2, and a transversal T that intersects them at points A and B respectively. The angle ∠PAB on line L1 would correspond to angle ∠QBA on line L2, and they would be equal.

To provide a mathematical proof, one would typically use properties of parallel lines and transversals, or other established theorems such as the alternate interior angles theorem or the exterior angle theorem. By proving all these other angles are equal due to their relationships with each other (alternate interior, consecutive interior, alternate exterior angles, etc.), one can by default establish that corresponding angles must also be equal.

Proof of this theorem often involves constructing supplementary and congruent angles and using the postulates of Euclidean geometry. The Pythagorean theorem and trigonometry need not be involved in this proof unless one is working with right triangles formed by the transversal and the parallel lines, or if dealing with more complex geometric problems.

Answer:

Step-by-step explanation:

Alright, lets get started.

Given that:

[tex]\frac{x+4}{4+x}[/tex]

Using commutative property, 4+x = x+4,

so

[tex]\frac{x+4}{x+4}[/tex]

Both numerator and denominator has same value, hence they could be cancelled.

So,

[tex]\frac{x+4}{x+4} = 1[/tex]

Hence the answer is 1 :   Answer  

Hope it will help :)

Answer:

c

Step-by-step explanation:

the answer is 1

Sequence (a) is an arithmetic sequence because the common difference is constant. Sequence (d) is a geometric sequence because the common ratio is constant. Sequences (b) and (c) do not follow the patterns of arithmetic or geometric sequences and are neither.

The question asks to identify each sequence as arithmetic, geometric, or neither.

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this is the anwser to your problem

(2y+5)(x-6)

Answer:

Degree would be 5 and leading coefficient is -7

Step-by-step explanation:

To identify the leading look for the number with the biggest power. The degree is the power and the leading is the main number.

Yes, the function f(x) = 4 - 7x^5 is a polynomial function with a degree of 5 and a leading coefficient of -7.

Yes, the function f(x) = 4 - 7x5 is a polynomial function.

A polynomial function is a function where the variable (x) is raised to a non-negative integer power and multiplied by coefficients. In this case, x is raised to the power of 5 which is a non-negative integer.

The degree of a polynomial function is the highest power of the variable. In this case, the degree of the function is 5.

The leading coefficient is the coefficient of the term with the highest power of the variable. In this case, the leading coefficient is -7.

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To find Michaela's average speed for the entire trip, we need to calculate the total distance traveled and the total time taken. The average speed can be calculated as (2D) / (D/3 + D/5), which is approximately 3.53 mi/h.

To find Michaela's average speed for the entire trip, we need to calculate the total distance traveled and the total time taken.

Let's assume the distance she climbed up the mountain is D. The distance she climbed down is also D since she retraced her steps. The average speed for climbing up is 3 mi/h and the average speed for climbing down is 5 mi/h.

The total distance is 2D and the total time is D/3 + D/5. Therefore, the average speed can be calculated as (2D) / (D/3 + D/5).

Simplifying this expression gives us the average speed as 3.53 mi/h (rounded to the nearest tenth).

Answer: If/then.

Step-by-step explanation: A theorem is a statement that has been proven on the basis of other statements, for example other theorems, which are known to be true.

We use the pattern "If A...., then B..." when we known that "A" is a statement that is true and we want to declare that since A is true, B should also be true.

20! / 16!  =

20*19*18*17*16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1

divided by

16*15*14*13*12*11*10*9*8*7*6*5*4*3*2*1

 equals C. 116,280