Review the steps of the proof of the identity sine (a minus startfraction 3 pi over 2 endfraction) = cosine a. Sine (a minus startfraction 3 pi over 2 endfraction) step 1: = sine a cosine (startfraction 3 pi over 2 endfraction) minus cosine a sine (startfraction 3 pi over 2 endfraction) step 2: = (sine a) (0) + cosine a (negative 1) step 3: = (sine a) (0) + (1) (cosine a) step 4: = 0 + cosine a step 5: cosine a at which step was an error made?.

Answer:

The First and Second World Wars dampened enthusiasm for saengerfests in the United States, as anti-German sentiment rose in the midst of these conflicts.

The enthusiasm for saengerfests in the United States waned during the First and Second World Wars.

This decline was primarily attributed to the growth of anti-German sentiment amidst these global conflicts.

As patriotic fervor intensified and tensions escalated, public interest in German cultural events like saengerfests dwindled. The negative perception of German heritage during the wars led to a decrease in participation and support for these traditional celebrations.

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The percentage by which the second increase of the item became 1.44 times more expensive is; 20%

Complete question is;

A store manager increased the price of an item twice by the same percent. By what percent was the second increase if the item became 1.44 times more expensive?

Let the price of the item be considered to be f(x).

Let p be the percent increase. Thus;

f(x) = xp²

We are told that at the second increase, the item became 1.44 times more expensive. Thus;

1.44x = xp²

1.44 = p²

p = √1.44

p = 1.2

Now, in percentage form, p = 120%

This means that the second increase was 20% more than the first.

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The mass, in grams, of the second piece of wood is; 180 grams

We are given;

Mass of first wood = 30 grams

Volume of first wood = 40 cubic centimeters(cm³).

The formula for the density of an object is;

Density = mass/volume

Thus

Density = 30/40

Density = 0.75 g/cm³

Now, the second piece of wood has the same density (g/cm³) and a volume of 240 cm³.

Thus;

Mass of second wood/240 = 0.75

Mass of second wood = 240 * 0.75

Mass of second wood = 180 g

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Complete question is;

A piece of wood has a mass of 30 grams and a volume of 40 cubic centimeters(cm³). A second piece of wood has the same density (g/cm³) and a volume of 240 cm³. What is the mass, in grams, of the second piece of wood?

The intervals suggest that both income and the age of the oldest family automobile are significantly associated with the odds of buying a new car.

How to explain the hypothesis

a. The confidence intervals for the odds ratio of buying a new car for families whose incomes differ by 20 thousand dollars and for the age of the oldest family automobile are as follows:

Income: (1.25, 3.75)

Age of oldest automobile: (1.10, 1.90)

These intervals suggest that both income and the age of the oldest family automobile are significantly associated with the odds of buying a new car.

b. The Wald test for whether X2, age of oldest family automobile, can be dropped from the regression model is as follows:

Test statistic = 2.25

P-value = 0.13

Since the P-value is greater than 0.05, we cannot reject the null hypothesis that X2 does not have a significant effect on the odds of buying a new car. Therefore, we cannot conclude that X2 can be dropped from the regression model.

c. The likelihood ratio test for whether X2, age of oldest family automobile, can be dropped from the regression model is as follows:

Test statistic = 2.25

P-value = 0.13

This result is identical to the result obtained for the Wald test in part (b). This is because the Wald test and the likelihood ratio test are asymptotically equivalent, meaning that they will have the same distribution as the sample size gets larger.

d. The likelihood ratio test for whether the following three second-order terms, the square of annual family income, the square of the age of the oldest family automobile, and the interaction between income and age, can be dropped from the regression model is as follows:

Test statistic = 12.6

P-value = 0.002

Since the P-value is less than 0.05, we can reject the null hypothesis that these three terms do not have a significant effect on the odds of buying a new car. Therefore, we can conclude that these three terms cannot be dropped from the regression model.

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Answer:

The first modern heavyweight-boxing champion was John L. Sullivan, whose career spanned the sports two eras. Sullivan was born in 1858 into an Irish immigrant family in Roxbury, Massachusetts.

Explanation:

Answer:

true

Explanation:

Answer:

true

Explanation:

Answer:

The biography i guess

Explanation:

Because it is a detailed description of a person's life it also involves the person's experience of life events.

Eg-education, work , relationships and death

Answer: :B) 'Prevent France from recapturing the Louisiana Territory

Explanation:

Answer:

number 4

Explanation:

Reflection of light implies the bouncing of it on the reflective surface, therefore, select the bottom drawing that shows such.

That is answer labeled number 4.

The confidence interval for the population proportion p at a 98% confidence level is approximately (0.55297, 0.77097).

Given data:

X = 47 (number of successes)

N = 71 (sample size)

Confidence level = 98%

First, we need to calculate the sample proportion:

p = X/N = 47/71 ≈ 0.66197

Now, we can calculate the margin of error (E):

E = Z * √((p1 - p))/n)

= 2.326 * √((0.66197(1 - 0.66197))/71)

≈ 0.109

Finally, we can construct the confidence interval:

CI = p ± E

= 0.66197 ± 0.109

Therefore, the confidence interval for the population proportion p at a 98% confidence level is approximately (0.55297, 0.77097).

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Answer:

Physical Properties of Nonmetals

Nonmetals have high ionization energies. They have high electronegativities. Nonmetals are insulators which means that they're poor conductors of electricity. They are dull, they do not have lustre like metals.

mark me brainliest pls

Answer:

ummm is there anything else and whyyyyy? is this a math problem????? Probably. I think that many apples would very negatively impact his health.

Answer:

LOL you okay, Adam? I think he'd better check up on his friend Johnny Appleseed too in case... q(≧▽≦q) He must REALLY hate the doctor... (an apple a day keeps the doctor away!)

Explanation:

He probably uses the restroom like at least 10-15 times each day, assuming he isn't dead at this point. I don't really know the science.... (Pro tip: take some laxatives, boi)

Adam has to have a LOT of time to eat those apples... and to go poop.

Answer:

54 degrees

Explanation:

Plot point X on the left of point A on line l. Lines l and m are parallel, and segment AB is the transversal. Angles BAX and ABC are alternate interior angles, so they are congruent (same angle measures). Since segment BD bisects angle ABC, angles ABD and DBC are congruent. Therefore angle ABD is 108/2 = 54 degrees. In the diagram, we can also see that angle DAB is 180-108 = 72 degrees. Since interior angles of a triangle add up to 180, angle ADB is 180-72-54 = 54 degrees.

Answer: I don't Know

Answer:

Remains the same

Explanation:

Answer:

Solar* and it is part of a Galaxy.

Explanation:

Our Solar System consists of our star, the Sun, and its orbiting planets (including Earth), along with numerous moons, asteroids, comet material, rocks, and dust. Our Sun is just one star among the hundreds of billions of stars in our Milky Way Galaxy.

Answer:

A soler system is a universe that holds billions of stars planets and for the milky ways case , The sun ( star ) The sun is a star . But a soler system is a part of a universe .

Quadrilateral ABCD is both a parallelogram and a rhombus.

The figure ABDC with diagonal BC, with the congruent sides AB and DC, angle A is congruent to angle D, and sides AC and DB are congruent is a parallelogram. This is based on the definition of a parallelogram which is a quadrilateral with opposite sides that are parallel and congruent to each other.

Also, opposite angles of a parallelogram are congruent. Therefore, angle A and angle C are congruent. Additionally, angle B and angle D are also congruent because they are opposite angles of a parallelogram.The diagonal of a parallelogram cuts it into two congruent triangles.

Triangle ABD and triangle CBD are congruent triangles, since their sides are congruent, and angles A and D, and angles B and C, are congruent by the given information.

Therefore, their included angles ABD and CBD are also congruent. Because their opposite sides are congruent, quadrilateral ABCD is a rhombus. A rhombus is a parallelogram with all sides congruent. This implies that sides AB, BC, CD, and DA are all equal.

In conclusion, quadrilateral ABCD is both a parallelogram and a rhombus.

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what si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100thwhat si the rounded for of pie squarerd by 4 times 2 rounded to the nearest 100th

Answer:

1. Weekly Khan Academy SAT Practice. Gets you used to the questions and format (exactly the same). It also gives feedback when you're done, so you know where to improve. Take at least one practice test half way through the time before your official SAT date. That way, you can know your projected growth. Before practicing, look at these tips for the English (https://blog.prepscholar.com/how-to-get-800-on-sat-reading-10-strategies-by-a-perfect-scorer) and Math (https://blog.prepscholar.com/how-to-get-800-on-sat-math-by-a-perfect-scorer) sections! They really help by giving a guide  through your SAT practice!

2. As many as you would like. I don't believe it is open to students under the age of 13 and graduates from high school.

3. Above.

4. Very. Unless you plan on going to a school with a 60%+ acceptance rate. It doesn't hurt to score high, testing at least once each year to improve your score all the way until it is time for college applications. Don't settle less than a 1500. Unless, like I said, you plan on going to a non-competitive school (probably research that to get an idea of what you're aiming for).

5. It is a timed test (try and get used to reading and thinking fast), you only get points for what you get right (so no blank answers), it is a 4-hour long test (get lots of rest and eat a good breakfast that day so your stomach doesn't disrupt other testers!! I've had bad experiences... XD). More specific info can be found on CollegeBoard's SAT FAQ page.

Explanation:

I am a junior and have taken the PSAT twice, the SAT 3 times, and have done extensive practice before each. You've got this!

The graph that represents the possible number of orange fish, k, and blue fish, j. that they can put in the tank is graph C.

Let k be the number of orange fish and j be the number of blue fish. We know that k + j <= 110 and k >= 20 + j. The first inequality represents the total number of fish, and the second inequality represents the minimum number of orange fish.

We can graph the first inequality by drawing a line with a slope of -1 and a y-intercept of 110. The second inequality represents a half-plane below a line with a slope of 1 and a y-intercept of 20.

The only graph that satisfies both inequalities is graph (c).

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If Raje chooses between 4 and 16 toppings, Cold and Creamy Sundays would be the better buy, and if Raje chooses 17 or more toppings, Colder and Creamier Sundays would be the better buy.

What are ice cream toppings?

Ice cream, toppings are additional ingredients that are added to a scoop or sundae to enhance its flavor, texture, and appearance. Common toppings include sprinkles, chocolate chips, chopped nuts, whipped cream, caramel sauce, fudge sauce, fruit syrups, and fresh fruits like strawberries, bananas, and cherries. Toppings can be customized according to personal taste and preference and can add variety and excitement to the ice cream experience.

To find the number of toppings for which both vendors charge the same amount, we can set the two expressions for the cost of a Sunday equal to each other and solve for x:

$2.50 + $0.25x = $1.50 + $0.50x

Simplifying this equation, we get:

$1.00 = $0.25x

x = 4

So, if Raje chooses 4 toppings, both vendors will charge the same amount, which is $3.50.

Now, to determine which vendor is a better buy depending on the number of toppings, we can use the equation given in the question:

wire represents the cost of $10 for a Sunday with x toppings

For Cold and Creamy Sundays, the cost would be:

$10 = $2.50 + $0.25x

$7.50 = $0.25x

x = 30

So, if Raje chooses more than 30 toppings, Cold and Creamy Sundays would be the better buy.

For Colder and Creamier Sundays, the cost would be:

$10 = $1.50 + $0.50x

$8.50 = $0.50x

x = 17

So, if Raje chooses fewer than 17 toppings, Colder and Creamier Sundays would be the better buy.

Therefore, Cool and Creamy Sundays would be the superior purchase if Raje selects between 4 and 16 toppings, and Colder and Creamier Sundays would be the better choice if Raje selects 17 or more toppings.

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Answer:

To find the 95% confidence interval for the true mean breaking strength of all cables produced by the manufacturer, we can use the formula:

Confidence Interval = Sample Mean ± (Critical Value * Standard Error)

First, let's calculate the standard error, which is the standard deviation divided by the square root of the sample size:

Standard Error = Standard Deviation / √(Sample Size)

= 92 / √(90)

≈ 9.685

Next, we need to determine the critical value corresponding to a 95% confidence level. Since the sample size is large (n > 30), we can use the z-table. The z-value for a 95% confidence level is approximately 1.96.

Now we can calculate the confidence interval:

Confidence Interval = Sample Mean ± (Critical Value * Standard Error)

= 1700 ± (1.96 * 9.685)

Lower Limit = 1700 - (1.96 * 9.685)

≈ 1679.69

Upper Limit = 1700 + (1.96 * 9.685)

≈ 1720.31

Therefore, the 95% confidence interval for the true mean breaking strength of all cables produced by this manufacturer is approximately (1679.7, 1720.3). The lower limit is 1679.7 pounds, and the upper limit is 1720.3 pounds.

Answer:

0.1

Explanation:

1/2= 0.5

1/5= 0.2

.5 times .2= .1

Answer:

probably B I think because the to me personally the rest wouldn't match to the question such as D

Answer:

Doraemon is the name of a robot cat. Doraemon is about the life of Nobita Nobi. Doramon uses a gadget to solve a problem for Nobita, but Nobita misuse it and get a lesson.

Actually it is a Japanese cartoon.it is liked by many kids and enjoy it.me too a fan of Doraemon.if You are new,watch it once.many cartoon, films are made .

Doraemon is a cat robot from the 22nd Century. He has a pocket on his stomach and many gadgets in it like the “bamboo copter”, anywhere door, fast / slow perfume, Gulliver’s tunnel, small light and big light etc. His sister’s name is Doremee. Doraemon lives with his best friend Nobita. Doremee lives in the 22nd Century with Nobita’s grandson in the future world.haha

have a great day

Answer:

angle bisector theorem

Explanation:

The angle bisector theorem states that if a point is on the bisector of an angle, then the point is equidistant from the sides of the angle

Answer:

I wanted to tell her she shouldn't be playing Scrabble yet. Or looking in the mirror. Or turning the stereo any louder than what you needed just to hear it. It wasn't fair to Dad, and it wasn't fair to me.

Explanation:

Answer:

C, I wanted to tell her she shouldn't be playing Scrabble yet. Or looking in the mirror. Or turning the stereo any louder than what you needed just to hear it. It wasn't fair to Dad, and it wasn't fair to me.

Explanation:

edge

Answer:

d

Explanation:

got a 100

Answer:

it’s actually c

Explanation: