please help!!!i don’t know how to do this

Answer:

log10 195 = 2.29

Answer:

I found this

To solve for the value of log10 19.5, we can use the property of logarithms that states:

loga(b^c) = c * loga(b)

In this case, we can express 19.5 as 10^2.29:

19.5 = 10^2.29

So, we can find the logarithm of 19.5 by solving for c:

log10(19.5) = log10(10^2.29)

By using the property of logarithms mentioned above, we can simplify the equation to:

log10(19.5) = 2.29 * log10(10)

Since log10(10) = 1, we can further simplify the equation to:

log10(19.5) = 2.29

Therefore, the value of log10 19.5 is 2.29.

x = 147 / 0.5446 ≈ 270.2 ft

To find the length of the guy wire for a radio transmission tower, trigonometry concepts are applied. Given a tower height of 160 feet, with the wire attached 13 feet from the top and making an angle of 29° with the ground, we can solve for the length of the guy wire, represented by x.

Using the Pythagorean theorem and considering the right triangle formed by the tower height, the wire attachment point, and the ground, we can set up the equation:

x = √((160 - 13)² + x²)

Next, we apply the tangent function to the given angle:

tan(29°) = (160 - 13) / x

Simplifying, we have:

0.5446 = 147 / x

To solve for x, we rearrange the equation:

x = 147 / 0.5446 ≈ 270.2 ft

Rounding to the nearest tenth of a foot, the length of the guy wire required is approximately 270.2 feet. This wire is attached 13 feet from the top of the tower and makes a 29° angle with the ground.

Trigonometry plays a crucial role in solving real-world problems involving angles and distances. It provides a mathematical framework for calculating unknown values based on known information, enabling accurate measurements and constructions.

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Answer:

its box 1,3,5

Step-by-step explanation:

Among the provided statements, only the statement "Abnormalities in the reflexes can indicate brain damage" is true of newborn reflexes:

Newborn reflexes are automatic, involuntary movements or actions that are exhibited by infants in response to certain stimuli. These reflexes are typically present from birth and serve as important indicators of neurological development and overall health.

Abnormalities or deviations from the expected patterns of newborn reflexes can suggest underlying neurological issues or brain damage.

For example, the absence, asymmetry, or persistence of certain reflexes beyond the expected timeframe can be signs of potential neurological problems that require further evaluation and medical attention.

However, the other statements provided in the options are not accurate:

- Reflexes do not appear until the third week of life: This statement is false. Newborn reflexes are present from birth or shortly after birth, and they can be observed in the early days of a baby's life.

- Newborns have control over their reflexes: This statement is false. Newborn reflexes are instinctual and involuntary responses that occur without conscious control from the infant. As the baby grows and develops, they gain more control over their movements and their reflexes become integrated into voluntary actions.

- These reflexes become involuntary over time: This statement is false. Newborn reflexes are already involuntary from the start. They are not intentionally controlled by the baby and are automatic responses triggered by specific stimuli.

It's important to note that the presence or absence of specific newborn reflexes and their developmental patterns can vary among individuals, but deviations from the norm may indicate potential health concerns and should be addressed by medical professionals.

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With formula of arithmatic series, the sum from 10 to 99 is 4905.

What is a arithmatic series?

An arithmetic series is a sequence of numbers in which each term is obtained by adding a fixed constant, called the common difference, to the previous term. The terms in an arithmetic series follow a pattern of increasing or decreasing by a constant amount.

For example, the sequence 2, 5, 8, 11, 14, ... is an arithmetic series, with a common difference of 3, because each term is obtained by adding 3 to the previous term.

The sum of the terms in an arithmetic series can be found using the formula:

S = (n/2)(a + l)

Now,

To find the sum of integers starting with 10 and ending with 99, we can use the formula for the sum of an arithmetic series, which is:

S = (n/2)(a + l)

where S is the sum, n is the number of terms, a is the first term, and l is the last term.

In this case, we have:

a = 10

l = 99

n = (l - a) + 1 = 90

Substituting these values into the formula, we get:

S = (90/2)(10 + 99) = 45(109) = 4905

Therefore, the sum of integers starting with 10 and ending with 99 is 4905.

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Answer:

sorry i wish i knew how but i would like to give you aomething other than an answer for your question and i hope this is ok.

Step-by-step explanation:

every day is a new day and a new opportunity to change the world no matter how BIG or how small.  even if you make mistakes. always remember this though. whatever you put into the world, whether it be good or bad, it will always come back three times.

meaning that when you do something good something three times as good will happen to you. The same is so for bad except it would be 3 times as bad as will happen to you.   I hope your day is great and may you do many great things.

Answer:

$14

Step-by-step explanation:

30% -> 0.3

20 x 0.3 = 6

20 - 6 = 14

The new price of the shirt will be 14 dollars.

Hope this helps, have a nice day :D

$14

Step-by-step explanation:

30% × 20

= 30/100 × 20

= 600/100

= $6

The new price of the shirt :

$20 - $6

= $14

The standard deviation in kilometers is 6.4 km (rounded to two decimal places).

(a) To compute the standard deviation (s) for the given data set 11, 8, 9, 7, 12, we can use the computation formula for the sample standard deviation:

where x is each data value, is the mean, Σ denotes the sum, and n is the sample size.

First, calculate the mean of the data set:

= (11 + 8 + 9 + 7 + 12) / 5 = 9.4

Next, calculate the sum of squared differences from the mean:

= (11 - 9.4)² + (8 - 9.4)² + (9 - 9.4)² + (7 - 9.4)² + (12 - 9.4)²

          = 2.56 + 1.96 + 0.16 + 5.76 + 6.76

          = 17.2

Now, substitute these values into the standard deviation formula:

s = √[17.2 / (5 - 1)]

s ≈ 2.6077 (rounded to four decimal places)

Therefore, the standard deviation (s) for the given data set is approximately 2.6077.

(b) When each data value in the set is multiplied by 5, the new data set becomes 55, 40, 45, 35, 60. To compute the standard deviation (s) for this new data set, we can follow the same process as in part (a):

Calculate the mean of the new data set: = (55 + 40 + 45 + 35 + 60) / 5 = 47

Calculate the sum of squared differences from the mean:

= (55 - 47)² + (40 - 47)² + (45 - 47)² + (35 - 47)² + (60 - 47)²

          = 64 + 49 + 4 + 144 + 169

          = 430

Compute the standard deviation using the formula:

s = √[430 / (5 - 1)]

s ≈ 9.8323 (rounded to four decimal places)

Therefore, the standard deviation (s) for the new data set is approximately 9.8323.

(c) Comparing the results of parts (a) and (b), we can observe that the standard deviation changes when each data value is multiplied by a constant (c). In general, the standard deviation is multiplied by the same constant c. So, the correct option is: Multiplying each data value by the same constant c results in the standard deviation being [c] times as large.

(d) No, you do not need to redo all the calculations. You can convert the standard deviation from miles to kilometers by using the given conversion factor of 1 mile = 1.6 kilometers.

To convert the standard deviation from miles (s = 4 miles) to kilometers, simply multiply it by the conversion factor:

s_km = s * 1.6

s_km = 4 * 1.6

s_km = 6.4

Therefore, the standard deviation in kilometers is 6.4 km (rounded to two decimal places).

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A mean of a normal distribution's upper bound of a 95% confidence interval is 58.11.

For the given question,

The confidence bound's upper limit (UCB) is determined as follows:

UCB =  μ + z(α/2)×σ/√n

Now, α/2 = (1 - 0.95)/2

α/2 = 0.025

z(α/2) = 1.96  (obtain from t-distribution table for degree of freedom)

Put the values in the formula,

UCB =  μ + z(α/2)×σ/√n

UCB = 36.96 + 1.96×41.8/√15

UCB = 58.11

As a result, 58.11 is the upper bound of a 95% confidence interval for the mean of a normal distribution.

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The picture presented is relevant to corresponding angles because it exemplifies what a corresponding angle is.

To have a corresponding angle the first condition is to have two or more parallel lines. Parallel lines are those that are equidistant. Now, if these two or more parallel lines are crossed by another line, an angle will be created in each line and because the lines are parallel the angle will be the same for the liens involved. This exact concept is exemplified in the rubric cube because the parallel lines crossed by another line will have the same or corresponding angles.

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Answer:

C. Multiply her answer by –6 and see if the result is –108.

Step-by-step explanation:

Answer:

The answer is c

Step-by-step explanation:

hope this helps c:

The group of families in which the proportion of children has contracted sharply from 1980 to 2013 is Middle-Income group.

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The force on the first charge is directed at an angle of 81.8° counter clockwise from the positive x-axis.

The total force on the first charge can be found using Coulomb's law and the superposition principle. According to Coulomb's law, the force between two charges is given by:

F = k * (q1 * q2) / r^2

where F is the force,

k is Coulomb's constant (9.0 × 10^9 N · m^2/C^2),

q1 and q2 are the charges of the two objects, and

r is the distance between them.

In this case, there are three charges involved, so we need to find the force on the first charge due to the other two charges. We can do this by finding the force between the first and second charges and the force between the first and third charges, and then adding them together using vector addition.The force between the first and second charges is:

F12 = k * (q1 * q2) / r12^2

where r12 is the distance between the first and second charges.

We can find r12 using the Pythagorean theorem:

r12^2 = (0.2 m)^2 + (0 m)^2 = 0.04 m^2r12 = 0.2 m

The force between the first and third charges is:

F13 = k * (q1 * q3) / r13^2

where r13 is the distance between the first and third charges.

We can find r13 using the Pythagorean theorem:

r13^2 = (0 m)^2 + (0.2 m)^2 = 0.04 m^2r13 = 0.2 m

Now we can use Coulomb's law to find the magnitudes of the two forces:

F12 = (9.0 × 10^9 N · m^2/C^2) * (-3.8 × 10^-4 C) * (8.1 × 10^-4 C) / (0.2 m)^2F12 = -1.202 N (attractive force)F13 = (9.0 × 10^9 N · m^2/C^2) * (-3.8 × 10^-4 C) * (2.8 × 10^-4 C) / (0.2 m)^2F13 = -0.266 N (repulsive force)

The total force on the first charge is the vector sum of F12 and F13. To find the direction of this force, we can use the tangent function:

tan θ = Fy / Fx

where Fy is the vertical component of the force and

Fx is the horizontal component of the force.

We can find these components using trigonometry:

Fy = F12 sin 90° + F13 sin 270° = -1.202 N + (-0.266 N) = -1.468 NFx = F12 cos 90° + F13 cos 270° = 0 N + (0.266 N) = 0.266 N

θ = tan^-1 (Fy / Fx) = tan^-1 (-1.468 N / 0.266 N) = -81.8°

The force on the first charge is directed at an angle of 81.8° counter clockwise from the positive x-axis.

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Answer:

  5, 6, 7, 8: correct

  9: the Hi.nge theorem does not apply

Step-by-step explanation:

The Hi.nge theorem says that the side opposite the angle between two pairs of congruent sides is longer if the angle is larger. This theorem is applicable to problems 5-8, and your application is correct.

__

9) The Hi.nge theorem does not apply. The marked angles are not between the congruent sides. There is no necessary relation between the marked angles and the angles that are between the congruent sides, so no conclusion can be drawn regarding the relative lengths of AB and CD.

Answer: 5000

Step-by-step explanation:

The statement that is true regarding the graphed functions is that: B. f(-2) = g(-2).

Mathematically, the point-slope form of a straight line can be calculated by using this mathematical expression:

y - y₁ = m(x - x₁) or y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)

Where:

At point (2, 0), an equation of the line f(x) can be calculated by using the point-slope form:

y - y₁ = (y₂ - y₁)/(x₂ - x₁)(x - x₁)

y - 0 = (-4 - 0)/(-2 - 2)(x - 2)

y = -x + 2

For line g(x), we have:

y - 4 = (-2 - 4)/(0 + 2)(x + 2)

y = -3(x + 2) + 4

y = -3x - 2

When x = 0, we have:

g(0) = 0 + 2 = 2

f(0) = 0 - 2 = -2.

When x = -2, we have:

g(-2) = -(-2) + 2 = 4

f(-2) = -3(-2) - 2 = 4.

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Answer: 273 degrees kelvin =  -0.15 degrees celsius

hope this helps brainliest plz

The best group to take a random sample from is All students in each grade. This is because the population that the social studies teacher is interested in is the students in the entire school.

By taking a random sample from all students in each grade, the teacher is ensuring that the sample is representative of the population as a whole.

The other options are not as good because they do not represent the entire population. For example, option a, All teachers in the school, does not include students. Option b, All boys in each grade, does not include girls. Option d, All students in the social studies club, only includes students who are members of the social studies club.

Therefore, the answer is All students in each grade.

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Total amount he will pay is equal to 62.880 after giving discount of 35% and adding the sales tax of 7.5%.

Discount is the total price which is deducted from the original terms so as we have to pay less.

Discount is always given on the marked price of the article.

Marked price is the cost at which article is marked.

Chandler buy shoes of $89.99.

Total discount on shoes = 35%

Price after getting Discount = 58.4935

Sales Tax = 7.5 %

Price after sales tax = 58.4935 + 7.5% of 58.4935

= 62.880

So total amount he will pay is equal to 62.880.

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The fraction of engine power being used to make the airplane climb is 33.3%.

To find the fraction of engine power being used to make the airplane climb, we need to use the formula:

Power = force x velocity

The force that is responsible for lifting the airplane off the ground is the weight of the airplane, which is given by:

Weight = mass x gravity

where mass = 750kg and gravity = 9.81m/s^2

Weight = 750kg x 9.81m/s^2 = 7357.5N

The power required to lift the airplane at a rate of 2.50 m/s is given by:

Power = force x velocity = 7357.5N x 2.50m/s = 18393.75W

To find the fraction of engine power being used, we divide the power required for climbing by the engine power, which is 75.0kW = 75000W:

Fraction of engine power = Power for climbing / Engine power x 100%

= 18393.75W / 75000W x 100%

= 24.5%

Therefore, the fraction of engine power being used to make the airplane climb is 24.5%. This means that the remaining 75.5% of the engine power is being used to overcome drag and other forces that oppose the airplane's motion.

Overall, this shows that flying an airplane requires a lot of power, and even a small fraction of the engine power can make a significant difference in altitude.

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Answer:

3 pi

Step-by-step explanation:

\(C= 2\pi r\)

\(C= 2\pi 1.5\)

\(C= 3\pi\)

Answer:

a>-21(1/3)

Step-by-step explanation:

3/4a>-16

first thing is to divide both sides by 3/4 to isolate the variable.

Since it is not negative, the sign stays the same.  

-16/0.75=-21.3 repeating or just 1/3

Answer:

The greatest common factor of 48 and 32 is 16

Answer:

16

Step-by-step explanation:

Brainliest is always appreciated :)

Answer:

(2) - \(\vec v= < 15.5885, -9 >\)

(3) - \(\vec u= < -59.9371, 148.349 >\)

Step-by-step explanation:

Problem #2:

Given the vector in magnitude-angle form, find it in component form.

Call the vector, vector "v."

\(||\vec v||= 18 \ at \ -30 \textdegree\\\\\rightarrow \boxed{\vec v= < ||\vec v||\cos\theta,||\vec v||\sin\theta > }\\\\\Longrightarrow \vec v= < (18)\cos( -30 \textdegree),(18)\sin( -30 \textdegree) > \\\\\therefore \boxed{\boxed{ \vec v= < 15.5885, -9 > }}\)

Problem #3:

Given the vector in magnitude-angle form, find it in component form.

Call the vector, vector "u."

\(||\vec u||= 160 \ at \ 112 \textdegree\\\\\rightarrow \boxed{\vec u= < ||\vec u||\cos\theta,||\vec u||\sin\theta > }\\\\\Longrightarrow \vec u= < (160)\cos( 112 \textdegree),(160)\sin( 112 \textdegree) > \\\\\therefore \boxed{\boxed{ \vec u= < -59.9371, 148.349 > }}\)

Answer:

The selling price of the bag is $22.5

Step-by-step explanation:

Buying Price = $25,

Selling Price = ?

Since they sold it at a loss of 10%,

So, they sold it for a price 10% less than the buying price,

or at 90% or 0.9 of the buying price,

so,

Selling Price = (0.9)(25) = $22.5

a. The equation representing the cost of buying and operating the Super Cool X1400 is: C = 800 + 60m. b. The equation representing the cost of buying and operating the Efficient Energy X2000 is: C = 1200 + 40m. c. Your family would have to use the Efficient Energy model for 10 months to compensate for the additional cost of the original purchase. d. Figuring your family will only use the air conditioner for four months each year, you would have to wait 5 years to start saving money overall.

a. The cost of buying the Super Cool X1400 is a one-time expense of $800. Additionally, the cost of operating it is $60 per month. Therefore, the equation representing the cost C as a function of months m is C = 800 + 60m.

b. The cost of buying the Efficient Energy X2000 is a one-time expense of $1200. The operating cost is $40 per month. Hence, the equation representing the cost C as a function of months m is C = 1200 + 40m.

c. To compensate for the additional cost of the original purchase (which is $400), we equate the two cost equations and solve for m:

800 + 60m = 1200 + 40m

20m = 400

m = 20

Therefore, your family would have to use the Efficient Energy model for 20 months (or 10 months more than the Super Cool X1400) to compensate for the additional cost.

d. Considering your family only uses the air conditioner for four months each year, we divide the total number of months (20) by four to find the number of years needed to start saving money overall:

20 months / 4 months/year = 5 years

Hence, you would have to wait 5 years to start saving money overall by choosing the Efficient Energy X2000.

a. The cost of buying and operating the Super Cool X1400 is represented by the equation C = 800 + 60m.

b. The cost of buying and operating the Efficient Energy X2000 is represented by the equation C = 1200 + 40m.

c. Your family would have to use the Efficient Energy model for 10 months to compensate for the additional cost of the original purchase.

d. Assuming your family uses the air conditioner for four months each year, you would have to wait 5 years to start saving money overall by choosing the Efficient Energy X2000.

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complete question- Your family plans to buy a new air conditioner. They can buy the Super Cool X1400 for $800, or they can buy the Efficient Energy X2000 for $1200. Both models will cool your home equally well, but the Efficient Energy model is less expensive to operate. The Super Cool X1400 will cost $60 per month to operate, while the Efficient Energy X2000 costs only $40 per month to operate. a. Write an equation to represent the cost of buying and operating the Super Cool X1400 where C= cost and m= months. b. Write an equation to represent the cost of buying and operating the Efficient Energy X2000. c. How many months would your family have to use the Efficient Energy model to compensate for the additional cost of the original purchase? d. Figuring your family will only use the air conditioner for four months each year, how many years ill you have to wait to start saving money overall?

Answer:

Part A= $21.35 || Part B= $4.37

Step-by-step explanation:

That's how money works.

Answer: The total amount the boys have is $21.35, luke has 4.37 more then Carter.

Step-by-step explanation:

Answer:

\( {m}^{9} {m}^{4} = {m}^{9 + 4} = {m}^{13} \)

1% percentage of Milgram's participants regretted having participated in the study.

Along with being the most powerful study in understanding obedience, Milgram’s research is also one that is often second hand when discussing the ethical treatment of human subjects.

Even though no participants accepted any real shocks, Milgram accept considerable criticism in regard to his treatment of subjects, specifically, Diana Baumrind (1964), claimed Milgram generate unacceptable levels of stress in his participants.

Baumrind (1964) also stated that the lab is an unknown setting, therefore the regulation of conduct is ambiguous for the subject, who would be more prone to obedient behavior set side by set to other environmental conditions. Also, after disclose the deception, subjects may feel used, embarrassed, or distrustful of psychologists and future control figures in their lives (Baumrind, 1964).

Milgram (1964) responded to these criticisms by look over his participants after debriefing them and establish that 83.7% were glad to have participated and only 1.3% regretted it.

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Answer:

i can Lol if you will help me after i help you

Step-by-step explanation:

put -6.5 in between -6 and -7. put -8.5 between -8 and -9. -6.5 is > than -8.5. hope this helped and i hope im right.