Is 2x+5=10 an example of an expression? Why or why not? If not, what would you call it instead?

To find the acceptance set A for a significance level of α = 0.09 and rejection set R of the form { |K - E(K)| > c}, we first need to calculate the expected value and variance of K.

(A) Since the coin is fair, E(K) = 50 and Var(K) = 25/2. Using the Central Limit Theorem, we can approximate K as a normal distribution with a mean of 50 and a standard deviation of 2.5. We can then find the value of c such that P(|K - 50| > c) = 0.09/2 = 0.045. Solving for c, we get c = 3.325. Therefore, the acceptance set A is {45 < K < 55}.

(b) For a significance level of α = 0.018 and rejection set R of the form {K > λ}, we again use the Central Limit Theorem to approximate K as a normal distribution with a mean of 50 and a standard deviation of 2.5. We can then find the value of λ such that P(K > λ) = 0.018. Using a normal distribution table or calculator, we find λ to be approximately 60.5. Therefore, the acceptance set A is {K ≤ 60}.

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According to a 2016 survey, the rate of smoking was higher for 12th graders, but only lower for 8th graders The survey shows that 4.8% of 8th graders and 10.5 of 12th graders smoke cigarettes daily.

It is, therefore, true that the rate of smoking was lower for 8th graders, but only higher for 12th graders. Therefore, it is essential to discourage people, especially young people, from smoking.

Smoking is a harmful habit that is associated with numerous health problems, including cancer, respiratory diseases, heart disease, and stroke. Therefore, it is essential to discourage people, especially young people, from smoking.

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Answer:

Number of teacher = 4

Step-by-step explanation:

Assume:

Total number of person = 46

Given:

Ratio teachers to students = 2:21

Find:

Number of teacher

Computation:

Number of teacher = Total number of person[2/(2+21)]

Number of teacher =46[2/(23)]

Number of teacher = 2[2]

Number of teacher = 4

Answer:

\(x=37\,\sqrt{2}\)

Step-by-step explanation:

Notice you are dealing with a right angle triangle, since one of the angles measure \(90^o\). Now, what you are asked to find is the hypotenuse of that triangle, given an angle of \(45^o\) and the opposite side: 37 units. Then, we can use for example the sine function which relates opposite, and hypotenuse:

\(sin(45^o)=\frac{opposite}{hyp} \\hyp=\frac{opposite}{sin(45^o)} \\hyp=\frac{37}{\sqrt{2}/2}\\hyp=37\,\sqrt{2}\)

Providing an explanation of the 12 states with the highest crime rate in 2022 would require access to recent crime rate data

I apologize, but as an AI language model, I don't have real-time data or access to the internet to provide you with the specific crime rates for the year 2022 or the average crime rates in America during the year 2016. My training only goes up until September 2021, and I don't have access to specific crime rate statistics.

To obtain the most up-to-date and accurate information on crime rates, I recommend referring to reliable sources such as official government websites, law enforcement agencies, or reputable crime research organizations. These sources regularly publish crime statistics for different regions and time periods.

Additionally, providing an explanation of the 12 states with the highest crime rate in 2022 would require access to recent crime rate data. Without the data, it is not possible to provide an accurate analysis or explanation. I encourage you to consult the aforementioned sources for the latest crime rate information.

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Answer:

3/-5

Step-by-step explanation:

Rise over Run is what Slope is. So basically we look at it and go how do we get from -6 to -3? Well you add 3, so thats your top number. We look at the bottom of the fractions now. We use the same thought process. How do you get from 14 to 9? Subtract 5. So our slope is 3/-5. Hope this helps

Answer:

3/-5

Step-by-step explanation:

should be the right answer hopes it helps

Answer:  \(\frac{7}{120}\)

Step-by-step explanation:

Answer:

a) y = \(\frac{7}{17}\)

b) x = 4

Step-by-step explanation:

a) \(\frac{3y+2}{5} =4y-1\)

3y + 2 = 20y - 5

2 = 20y - 3y - 5

2 = 17y - 5

2 + 5  = 17y

7 = 17y

y = \(\frac{7}{17}\)

b) x² + 5 = 21

x² = 21 - 5

x² = 16

x = √16

x = 4

Check the attachment... hope it helps :)

x= +4 or -4

y= 7/17

You get the sum.

I hoped this helped!!

Answer:

there are three variable terms

Answer:

C

Step-by-step explanation:

Report if wrong

-Stylez-

Answer:

[0,∞)

Step-by-step explanation:

The range talks about what the graph is doing in terms of the y axis. So anytime you're dealing with the range, think of up and down. It appears that there is a point a (0,0) and it goes infinitely down.

So, we place a bracket at zero because it's included. And since it goes infinitely, we put parentheses around that.

The fraction of the animals in chickens is 52/80 which is 0.65 in decimal form.

So, (A) The fraction of the animals is chickens: 52/80

Simplest form: 13/20

(B) In decimal form: 0.65

Therefore, the fraction of the animals in chickens is 52/80 which is 0.65 in decimal form.

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The statement that x = 0 is the only solution to ax = 0 if and only if the rank of the p × q matrix a equals q, the number of unknowns, can be proven as follows:

First, assume that x = 0 is the only solution to ax = 0. This means that there are no nonzero solutions to the equation, implying that the null space of the matrix a is trivial (only containing the zero vector). By the rank-nullity theorem, the nullity of a matrix is equal to the dimension of its null space. Since the null space of a is trivial, its nullity is zero.

Next, consider the rank of the matrix a. By the rank-nullity theorem, the rank of a plus its nullity is equal to the number of columns in a, which is q. Therefore, if the nullity is zero, the rank of a must be equal to q.

Conversely, if the rank of the matrix a equals q, it implies that the nullity of a is zero. This means that the only solution to the equation ax = 0 is the zero vector, x = 0.

x = 0 is the only solution to ax = 0 if and only if the rank of the matrix a equals q, the number of unknowns. This result highlights the relationship between the null space and the rank of a matrix, providing insights into the solutions of linear equations and the properties of the matrix.

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Answer:

b

Step-by-step explanation:

no

Answer:

The answer is B. the Pythagorean theorem

Step-by-step explanation:

brainiest pls?

If the equation has infinitely many solutions for x, the value of b that results in infinitely many solutions for x is b = 5/2.

To determine the value of b in the equation a(x + b) = 4x + 10, we can analyze the conditions that would result in infinitely many solutions for x.

First, let's simplify the equation:

a(x + b) = 4x + 10

Expanding the left side of the equation

ax + ab = 4x + 10

Now, let's rearrange the equation to isolate x:

ax - 4x = 10 - ab

Factor out x on the left side:

x(a - 4) = 10 - ab

For the equation to have infinitely many solutions, the coefficient of x (a - 4) must be zero, because any value of x would satisfy the equation.

Therefore, we have:

a - 4 = 0

Solving for a:

a = 4

Substituting the value of a into the equation:

4 - 4 = 0

0 = 0

The equation holds true, indicating that a = 4 satisfies the condition for infinitely many solutions. Now, we can find the value of b.

Substituting a = 4 into the original equation:

4(x + b) = 4x + 10

Expanding:

4x + 4b = 4x + 10

Since the x terms cancel out, we are left with:

4b = 10

Dividing both sides by 4:

b = 10/4

Simplifying:

b = 5/2

Therefore, the value of b that results in infinitely many solutions for x is b = 5/2.

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Answer:

positive interger.....

Answer:

Step-by-step explanation:

Perimeter is when you are adding all the sides

so lets do that

6  + 2x + 10 + 3x = 121

5x +16= 121

Answer:

BC = 60

Step-by-step explanation:

3X + X = 80      <---- X = BC

3X + X = 4X

4X = 80   <---- DIVIDE BOTH SIDES BY 4

4X ÷ 4 = X

80 ÷ 4 = 20

20 × 3 = 60

Answer:

AB = 20 m

BC = 60 m

Step-by-step explanation:

Let AB be x

So BC becomes 3x

AC is 80 metres

So,

x+3x = 80

4x = 80

Dividing both sides by 4

x = 20

So,

AB = 20 metres

While

BC = 3(20) = 60 metres

Answer:

(B)

Step-by-step explanation:

Can't explain lol, but that's the answer

Answer:

Option C is the correct answer

Step-by-step explanation:

\( \huge{a}^{ \frac{5}{6} } = \sqrt[6]{ {a}^{5} } \)

The values of x are  in between -8 ≤ x ≤ 28.

To describe all x values at a distance of 18 or less from the number 10, we can use the inequality |x - 10| ≤ 18, where || denotes absolute value.                                                                                                                                                          

This inequality tells us that the distance between x and 10 is less than or equal to 18.The solution to this inequality is given by the interval [10 - 18, 10 + 18] or [-8, 28]. Therefore, all x values in the interval [-8, 28] are at a distance of 18 or less from 10.                                                                                                                                                                          Another way to express this interval is as the set of all x values such that 10 - 18 ≤ x ≤ 10 + 18, which can be simplified to  -8 ≤ x ≤ 28.

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All x values at a distance of 18 or less from the number 10 are between -8 and 28.

To describe all x values at a distance of 18 or less from the number 10, we can use absolute value inequality notation.

Let x be the number we are considering. Then we can write the absolute value inequality as:|x - 10| ≤ 18

To solve for x, we can split this inequality into two cases:

1. x - 10 is positive| x - 10 | = x - 10, so the inequality becomes:x - 10 ≤ 18 ⇒ x ≤ 28

So the solution set for this case is: 10 ≤ x ≤ 28.

2. x - 10 is negative| x - 10 | = -(x - 10), so the inequality becomes:- (x - 10) ≤ 18 ⇒ x ≥ -8

So the solution set for this case is: -8 ≤ x ≤ 10.

Combining the solution sets for both cases, we get:-8 ≤ x ≤ 28

Therefore, all x values at a distance of 18 or less from the number 10 are between -8 and 28 inclusive.

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Point J with coordinate at 3.5 is midpoint between the point G with coordinate at 2 and point H with coordinate at 5.

An equation is an expression that shows the relationship between two or more numbers and variables. An independent variable is a variable that does not depend on other variables while a dependent variable is a variable that depends on other variables.

Points F G H and J with the coordinates -4 2/3 (-14/3), 2, 5, and 3.5.

The midpoint between G and H = (1/2)(5 - 2) + 2 = 3.5

Point J with coordinate at 3.5 is midpoint between the point G with coordinate at 2 and point H with coordinate at 5.

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Answer:

-6

Step-by-step explanation:

-6 is the answer .

Hope it helps you

Answer:

-6

Step-by-step explanation:

Answer:

\(\boxed{\bold{p=-9}}\)

Step-by-step explanation:

\(\bold{ \cfrac{1}{4}\:p+\cfrac{3}{4}\left(p-8\right)=11+\cfrac{1}{4}\left(12p+4\right)}\)

\(\bold{\cfrac{1}{4}\left(12p+4\right)}\)

Multiply fractions:

\(\bold{\cfrac{1\times \left(12p+4\right)}{4}}\)

\(\bold{\cfrac{12p+4}{4}}\)

\(\bold{\cfrac{1}{4}\:p+\cfrac{3}{4}\left(p-8\right)=11+\cfrac{12p+4}{4}}\)

Now, Multiply both sides by 4:

\(\bold {\cfrac{1}{4}\:p\times \:4+\cfrac{3}{4}\left(p-8\right)\times \:4=11\times \:4+\cfrac{12p+4}{4}\times \:4}\)

\(\bold {p+3\left(p-8\right)=12p+48}\)

Expand: Apply Distributive property:

\(\bold{p+3p-24=12p+48}\)

Combine like terms:

\(\bold{(p+3p):4p}\)

\(\bold{4p-24=12p+48}\)

Add 24 from both sides:

\(\bold{4p-24+24=12p+48+24}\)

\(\bold{4p=12p+72}\)

Subtract 12p from both sides:

\(\bold{4p-12p=12p+72-12p}\)

\(\bold{-8p=72}\)

Divide both sides by -8:

\(\bold{\cfrac{-8p}{-8}=\cfrac{72}{-8}}\)

\(\bold{p=-9}\)

______________________________________

Step-by-step explanation:

Divide by -9 to eliminate the -9 on -9y but remember if you divide or multiply by a negative you will need to switch/turn-around the sign

y≥-4

Answer: y≥-4

The critical value t for constructing a 90% confidence interval for a mean with 6 degrees of freedom is 1.943.

The correct option is C.

A confidence interval is a range of values that are constrained by the statistic's mean and that is likely to include an unidentified population parameter. The proportion of likelihood, or certainty, that the confidence interval would include the real population parameter when a random sample is drawn several times is referred to as the confidence level.

Given:

A degree of freedom = 6.

df = 6.

From the t-table;

The critical value t for constructing a 90% confidence interval for a mean with 6 degrees of freedom is,

= 1.943.

Therefore, the required value is 1.943.

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The average speed in kph of a horse and rider be if they cover a total distance of 14 km (remember the trail is winding) in 249 minutes is 3.37 kph.

To find the average speed, we can use the formula: Average speed = Total distance / Total timeWe are given the total distance covered by the horse and rider as 14 km and the time taken to cover this distance as 249 minutes.To find the average speed in kph, we need to convert the time from minutes to hours.

1 hour = 60 minutes Therefore, 249 minutes = 249/60 hours = 4.15 hoursNow we can use the formula:Average speed = Total distance / Total time Average speed = 14 km / 4.15 hoursAverage speed = 3.37 kphTherefore, the average speed in kph of the horse and rider would be 3.37 kph if they cover a total distance of 14 km in 249 minutes.

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Answer:

x = 76.58°

Step-by-step explanation:

hyp = 13.41

tan = opp/adj

tan = 1/2 = 26.57

x = 76.58