Can someone help me with this

9514 1404 393

Explanation:

Make use of the properties of equality.

  a = 2b +6 . . . . . given

  a = 9b -8 . . . . . given

  2b +6 = 9b -8 . . . . . . . substitution property of equality

  6 = 7b -8 . . . . . . . . . . . subtraction property of equality

  14 = 7b . . . . . . . . . . . . . addition property of equality

  2 = b . . . . . . . . . . . . . . . division property of equality

  b = 2 . . . . . . . . . . . . . . symmetric property of equality

The value of x is -1 and the values on both sides are the same, hence the equation has infinite number of solution

Linear equations are equation that has a leading degree os 1. Given the equations below:

-x +4 = x + 6

Collect the like terms

-x - x = 6 - 4

-2x =2

Divide both sides by -2

-2x/-2 = 2/2

x = -1

For the expression

5n + 7 =. 7(n+1) - 2n

5n + 7 = 7n + 7 - 2n

simplify

5n - 5n = 7 - 7

0n = 0

Since the values on both sides are the same, hence the equation has infinite number of solution

Learn more on linear equation here: https://brainly.com/question/1884491

#SPJ1

These statistical measures help the researcher summarize, describe, and understand the data collected from the study participants.

As the researcher is describing the characteristics of the subjects, the appropriate statistical analysis would be descriptive statistics.

Descriptive statistics is a method that summarizes and describes the data collected in a study. It includes measures such as mean, median, mode, standard deviation, range, and frequency distribution.

These measures can provide a clear picture of the demographic data of the three groups of subjects and help in drawing meaningful conclusions.

to learn more about standard deviation click here:

brainly.com/question/13905583

#SPJ11

Hello,

d)

The tangential angle of mesure x intercept the same arc intercepted by the inscribed angle of mesure 70 have the same mesure:

x=70°

e)

There is a rectanglar triangle with a angle of 64°

The complement is 90°-64°=26°

The inscribed angle of mesure x has a mesure which is the half of the center angle of 26°

So x=13°

I hope i have used the right words in my answer.

Answer:

B

Step-by-step explanation:

ou select a letter at random from the letters shown. Express the following probabilities as a fraction, a decimal, and a percent. letters A B C D E

A) P (vowel)

B) P (consonant)

Answer:

the fraction would be 1/5 chance for every letter.

Step-by-step explanation:

there is one of each letter and there is 5 letters, therefore there is a 1/5 chance of selecting A, B, C, D, or E.

The statement that best proves that <XWY ≅ <ZYW is that two parallel lines are cut by a transversal, then the alternate interior angles are congruent

To determine the correct statement, we need to know the properties of a parallelogram.

These properties includes;

Learn more about parallelogram at: https://brainly.com/question/10744696

#SPJ1

Answer:

slope=y2-y1/x2-x1

where y2= 12, y1=7, x2=6, x1=3

12-7/6-3

= 5/3

therefore slope=5/3

No, it is not possible to draw an quilateral triangle for which the circumecenter, incenter, centroid, and orthocenter are not all the same point.

An equilateral triangle, which is frequently referred to as a "regular" triangle, is a triangle with three equal-length sides.

For the stated question-

Thus, the statement given by the friend is incorrect.

To know more about the equilateral triangle, here

https://brainly.com/question/17264112

#SPJ4

Answer:

B) 7 2/3, √3/2, 4/5, -2π, -6.5

Step-by-step explanation:

B) 7 2/3, √3/2, 4/5, -2π, -6.5

Answer:

11:9

Step-by-step explanation:

Since 11 comes first and 9 comes second, we do 11:9

Answer:

18 : 22

Step-by-step explanation:

The ratio is already in lowest terms so we found an equivalent ratio by multiplying both terms by 2.

X and W cannot be independent if W has positive variance.

No, X and W cannot be independent if W has positive variance.

The independence of two random variables, X and W, is defined by the condition that their joint probability distribution function (PDF) can be expressed as the product of their individual marginal PDFs. Mathematically, if X and W are independent, then

P(X = x, W = w) = P(X = x) × P(W = w) for all possible values of x and w.

However, the presence of a positive variance for W implies that there is variability in the values that W can take. This means that the distribution of W is not degenerate (i.e., not concentrated at a single point), and there is a spread of possible outcomes for W.

If X and W were independent, the spread of values for W should not affect the distribution of X. But since W has variability and non-zero variance, it means that the values of W can influence the values of X, and vice versa. This indicates a dependence between X and W.

Therefore, X and W cannot be independent if W has positive variance.

To know more about independent click here :

https://brainly.com/question/14803747

#SPJ4

The question is incomplete the complete question is

Let X = Θ + W, where Θ and W are independent normal random variables and w has mean zero.

a) Assume that W has positive variance. Are X and W independent?

Option B is correct -The value of x is 15/2

An equation is a mathematical statement that is made up of two expressions connected by an equal sign.

the given expression is,

7( 2x - 5) -2(2x - 5) = 4(x + 5)

now ,open all the brackets of the equation,

14x - 35 - 4x + 10 = 4x + 20

now , add all the like terms of this expression,

10x -25 = 4x + 20

arrange all the like terms on one side and rest on the other side,

10x - 4x = 20 +25

6x = 45

x = 45/6

x =  15/2

so, 15/2 is the value of x in this expression.

Learn more about equation here :-

https://brainly.com/question/10413253

#SPJ4

Answer:

See attachment below

Step-by-step explanation:

A tank with a capacity of 3000 litres,

(2.1) The differential equations for S(t) and C(t) describe the rate of salt change in the tank.  

(2.2)The phase lines show the direction of change, with initial values increasing as salt is pumped.

(2.3) As t approaches infinity, S and C approach a steady state, resulting in a constant amount and concentration of salt in the tank.

(2.1)The differential equation for S(t), the amount of salt in the tank after t minutes, can be written as dS/dt = (250)(0.5) - (250)(S/3000). This equation represents the rate at which salt is entering the tank (250 liters per minute with 0.5 kg of salt per liter) minus the rate at which salt is being pumped out of the tank (250 liters per minute with S kg of salt per liter).
The differential equation for C(t), the concentration of salt in the tank after t minutes, can be written as dC/dt = (0.5) - (C/3000). This equation represents the rate at which salt concentration is increasing (0.5 kg per liter) minus the rate at which salt concentration is decreasing (C kg per liter divided by the total volume of 3000 liters).
(2.2) The phase lines for the differential equations would show the direction of change for S and C. The values of S and C would increase initially as water with salt is being pumped into the tank. However, as time progresses, the values would stabilize as the rate of salt entering equals the rate of salt leaving.
(2.3) When t approaches infinity, S and C would approach a steady state. This means that the amount of salt and the concentration of salt in the tank would remain constant. The tank would reach an equilibrium where the rate of salt entering equals the rate of salt leaving, resulting in a constant amount and concentration of salt in the tank.
In summary, the differential equations for S(t) and C(t) describe the rates of change of salt amount and concentration in the tank. The phase lines and rough sketches show the behavior of S and C over time, with S and C approaching a steady state as t approaches infinity.

To learn more about differential equation visit:

https://brainly.com/question/28099315

#SPJ11

Answer:

YES

Step-by-step explanation:

4(3b-4)=2(6b-8)

12b-16=12b-16

YES

Answer:

yes

Step-by-step explanation:

because 4*3=12 and 2*6=12 , and 4*4=16 and 2*8=16

The minimum value of 9y – 45x^2 is 0, which occurs when y = 5x^2/3, so the range of V is all non-negative real numbers:

Range of V: [0, ∞)

To find the domain and range of the function V(x, y) = 9√(9y – 45x^2), we need to consider the values of x and y that make the expression under the square root non-negative, since we cannot take the square root of a negative number.

So, we have:

9y – 45x^2 >= 0

Dividing both sides by 9 and rearranging, we get:

y >= 5x^2/3

This means that the domain of V is all points (x, y) such that y is greater than or equal to 5x^2/3:

Domain of V: {(x, y) | y >= 5x^2/3}

To find the range of V, we note that the square root is always non-negative, so V(x, y) will be non-negative whenever 9y – 45x^2 is non-negative. The minimum value of 9y – 45x^2 is 0, which occurs when y = 5x^2/3, so the range of V is all non-negative real numbers:

Range of V: [0, ∞)

To learn more about domain visit:https://brainly.com/question/28135761

#SPJ11

The highest score obtained in this group of 12 scores is 19

What is the distribution in statistics?

In statistics, a distribution refers to the way in which a variable is spread out or distributed across different values. A distribution describes the probability of different outcomes for a variable, and can be visualized using graphs such as histograms, box plots, and probability density functions.

The distribution in Table 2-3 shows frequency (f) for different score ranges (x). Without knowing the exact scoring system, we can't say for certain what the highest score obtained in this group of 12 scores is. However, we can determine the upper limit of the highest score range by multiplying the upper limit of the range by its frequency:

Upper limit of 20-24 range = 24

Frequency of 20-24 range = 2

Upper limit of 15-19 range = 19

Frequency of 15-19 range = 5

Upper limit of 10-14 range = 14

Frequency of 10-14 range = 4

Upper limit of 5-9 range = 9

Frequency of 5-9 range = 1

To find the highest score, we need to determine the upper limit of the score range that has the highest frequency. In this case, the highest frequency is 5, which corresponds to the range 15-19.

Hence, the highest score range is 15-19, and the highest score within that range is the upper limit of that range, which is 19. So, the highest score obtained in this group of 12 scores is 19 (assuming the scoring system is such that higher scores correspond to higher ranges).

To learn more about distribution in statistics, Visit

https://brainly.com/question/22101798

#SPJ1

Step-by-step explanation:

volume= y×9×10=2700

90y=2700

y= 2700/90

y= 30 cm

Answer:

greater than b

Step-by-step explanation:

We can use the transitive property for this answer. The transitive property states that if A=B, and B=C, A will always be equivalent to C. Similarly in this equation, -5 is greater than a, and a is greater than b, so -5 must be greater than b.

Answer:

Developing and improving communication skills will help ensure that messages are sent and received properly. Analyze the effects of effective communication. Effective communication involves the sender having the desired effect on the receiver of the message.

Step-by-step explanation:

I just did it and got it it right

Hope this helps!

       God Bless You! <3

Step-by-step explanation:

if x=4. then it be |4-2|-1= 1

x=5 5-2-1 so 2

and so on

Answer:

Both of them are equally fast

Step-by-step explanation:

Coz,

YOU--> 200/5= 40 words per min

BRENDA--> 240/6=40 words per min

Step-by-step explanation:

(4sin0 × 4sin0) +(4sin0 × -3cos0)+ (3cos0×4sin0) +(3cos0 × -3cos0)=

16 sin²0 - 12 sin0cos0 + 12 sin0cos0 -

9cos²0

= 16sin²0 - 9 cos²0

\(\\ \sf\longmapsto (4sin\theta+2cos\theta)(4sin\theta-3cos\theta)\)

\(\boxed{\sf (a+b)(a-b)=a^2-b^2}\)

\(\\ \sf\longmapsto (4sin\theta)^2-(3cos\theta)^2\)

\(\\ \sf\longmapsto 16sin^2\theta-9cos^2\theta\)

Answer:

true

Step-by-step explanation:

The triangle shown below may not be congruent true

The required table of values for equation y=5-2x is;

x | y

0   5

1    3

2    1

3   -1

Tables of values are values used to represent functions.

Given the linear function expressed as y = 5 - 2x, we are to form a tables of values for the function.

Using the values of x = 0, 1, 2, and 3

If x = 0

y = 5 - 2(0)

y = 5

If x = 1

y = 5 - 2(1)

y = 3

If x = 2

y = 5 - 2(2)

y = 1

If x = 3

y = 5 - 2(3)

y = -1

Hence the required table of values for equation y=5-2x is;

x | y

0   5

1    3

2    1

3   -1

Learn more on function and tables here: https://brainly.com/question/10439235

The p-value can be calculated to test the null hypothesis that the average running time of HP laptops is 120 minutes against the alternative hypothesis that it is not equal to 120 minutes.

The p-value for testing the hypothesis that the average time for the HP laptops is not equal to 120 minutes can be calculated using a t-test. Given a sample mean of 122 minutes, a sample size of 60, a null hypothesis mean of 120 minutes, and a standard deviation of 25 minutes, we can calculate the t-value and find the corresponding p-value.

To calculate the t-value, we use the formula: t = (sample mean - null hypothesis mean) / (sample standard deviation / sqrt(sample size))

Plugging in the values, we get: t = (122 - 120) / (25 / sqrt(60))

Calculating the t-value, we find t ≈ 0.894

To find the p-value associated with this t-value, we can refer to a t-distribution table or use statistical software. The p-value represents the probability of observing a t-value as extreme as the one obtained, assuming the null hypothesis is true.

Since the p-value (0.757) is greater than the commonly used significance level of 0.05, we fail to reject the null hypothesis. This suggests that there is not enough evidence to conclude that the average running time of HP laptops is significantly different from 120 minutes.

To know more about t-tests , refer here:

https://brainly.com/question/1189751#

#SPJ11