10 points!!
Please help! Show explanation.

The possible solutions for x for the equation sin(2x) – sin(x) = 0 will be (π/3, 5π/3). Then the correct option is B.

Given that:

sin(2x) – sin(x) = 0

Simplify the equation, then the value of 'x' is calculated as,

sin(2x) – sin(x) = 0

sin(2x) = sin(x)

2 sin x cos x = sin x

cos x = 1/2

cos x = cos (π/3, 5π/3)

x = π/3, 5π/3

The possible solutions for x for the equation sin(2x) – sin(x) = 0 will be (π/3, 5π/3). Then the correct option is B.

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The length of the segment in circle (9) is the radius x = 6. And the length of the segment in (10) is x = 8.9

A circle is a two-dimensional shape that is defined as a set of points that are equidistant from a single fixed point, called the center. The radius of a circle is the distance from the center to any point on the circumference. All radii of a circle are equal in length. While the diameter of a circle is a straight line passing through the center of the circle and touching two points on the circumference. The diameter is always twice the length of the radius.

For question (9):

the segments indicated as x and 6 are radii of the circle so;

x = 6

For question (10):

the radius = 31.6/2 = 15.8

also;

the radius = 6.9 + x

so;

x = 15.8 - 6.9

x = 8.9.

Therefore, the The length of the segment in circle (9) is the radius x = 6. And the length of the segment in (10) is x = 8.9

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The phrase, raise to the power of is used when referring to exponents because the power or strength increases with the addition of more numbers. For instance, 2 raised to the power of 1 is not as strong as 2 raised to the power of 100.

The usage of this phrase stems from the fact that numbers tend to increase in strength as they are raised to an increasing number of figures.  

The strength that numbers carry differs as they increase or decrease. Just as 10 is greater than 1 or 2, so will different powers of exponents differ in strengths.

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If in the set A ⊂ B then the statement A U B = B

A set is a collection of well defined items.

Since we have A ⊂ B, we want to determine which statement of the set is true. To determine that, we proceed as follows.

So, if A ⊂ B then the statement A U B = B

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The net sales, =$20.98

The Goods available for sales= $2,045

The total cost of Goods sold=$1,955

Gross profit =$1,934.02

Net income = $1,395.98

The operating income (sales) = $7,240

The return on sales (ROS) = $345

The net sales (revenue generated) = ?

But ROS = operating income/net sales

Net sales = 7240/345;

= $20.98

The goods available for sale = beginning inventory+ new purchase = $725+$1320 = $2,045.

The total cost of Goods sold = Beginning inventory+goods available for sale - end inventory.

= 725+2,045- 815

= 2770-815

= $1,955

The gross profit = cost of goods sold (COGS) - total revenues.

= $1,955-$20.98

= $1,934.02

Net income = total operating expenses - gross profit

operating expenses = 1,750+1000+280+150+150 = $3,330

gross profit = $1,934.02

Net income = 3,330-1,934.02 = $1,395.98

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The given data results in the following Frequency Distribution

Class Frequency

21-27 3

28-34 8

35-41 7

42-48 8

49-55 4

In statistics, frequency distribution is a way of organizing data into categories, or intervals, and counting how many observations fall into each category. It helps us understand the distribution of data and identify patterns within it.

To construct a frequency distribution using 5 classes, we need to first determine the range of the data:

Range = Maximum value - Minimum value

= 52 - 21

= 31

We can then calculate the width of each class:

Width = Range / Number of classes

= 31 / 5

= 6.2

Since we cannot have a fractional width, we round up to the nearest whole number. The class width is therefore 7.

Next, we need to determine the class intervals, or boundaries, which are the values that define each class. We start with the minimum value and add the class width successively:

Class 1: 21-27

Class 2: 28-34

Class 3: 35-41

Class 4: 42-48

Class 5: 49-55

We can now count how many observations fall into each class. The resulting frequency distribution is shown below:

Class Frequency

21-27 3

28-34 8

35-41 7

42-48 8

49-55 4

In this frequency distribution, we can see that the majority of the observations fall into the middle three classes, with fewer observations in the first and last classes. This suggests that the data is roughly symmetric and evenly distributed around the center.

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The dolphin's weight that differs most from the value predicted by this model is JoJo's (31 lb of difference)

Let's elaborate the model this way:

Snowflake's length - Pax's length = 8.2 - 7.6 = 0.6 ft

Snowflake's weight - Pax's weight = 549 - 519 = 30 lb

Ratio = 30/0.6 = 50 lb/ft

This means that for every foot of length, the dolphin has a variable weight of 50 lb.

However, if we multiply the ratio by the actual length of the two dolphins, we will have these results:

Snowflake = 50 × 8.2 = 410

Pax = 50× 7.6 = 380

Snowflake = Actual weight - Ratio× Length = 549 - 410 = 139

Pax = Actual weight - Ratio × Length = 519 - 380 = 139

The common difference is 139.

Therefore, the linear model that predicts the weight (y) of a dolphin given its length (X) is:

y = 139 + 50x

Now, let's use the linear equation or model to calculate the weight of the remaining four dolphins, as follows:

Blaze  y = 139 + 50 × 6.8 = 479 ⇒ difference of 9 lb (488 - 479)

JoJo   y = 139 + 50 × 5.8 = 429 ⇒ difference of 31 lb (460 - 429)

Corky   y = 139 + 50 ×8.4 = 559 ⇒ difference of 2 lb  (559 - 557)

Shadow  y = 139 + 50 × 7.4 = 509 ⇒ difference of 8 lb  (509 - 501)

Hence, the dolphin's weight that differs most from the value predicted by this model is JoJo's (31 lb of difference)

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The table below shows the lengths and weights of six dolphins at an aquarium. Use the data from Pax and Snowflake to

create a linear model that predicts the weight (y) of a dolphin given its length (X). Which dolphin's weight differs most from th

value predicted by this model?

Name

Snowflake

Shadow

Corky

Pax

JoJo

Blaze

Length (ft)

8.2

74

8.4

7.6

5.8

6.8

Weight (lb)

549

501

557

519

460

488

Blaze

JOJO

Corky

Shadow

The missing angle of the given image is: ∠HLI = 150°

There are different terms in this type of case when looking for missing angles and they include:

Corresponding angles

Supplementary angles

Opposite angles

Alternate angles

Now, we are given that:

∠JLI = 30°

We know that the sum  of angles on a straight line is 180°. Thus:

∠HLI = 180° - 30°

∠HLI = 150°

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The correct solution of the triangle is seen in option D

In this case, we would need to use the sine rule so as to solve the triangle as we have in the problem that is before us here. The sine rule states that;

a/Sin A = b/SinB = c/SinC

We know that we can be able to obtain the angle C using the sine rule;

29/Sin 42 = 33/SinC

SinC = 33Sin42/29

C = Sin-1(33Sin42/29)

C = 49.6 degrees

The angle B is now;

180 - (42 + 50)

B = 88.4 degrees

Then;

b/Sin 88 = 29/Sin42

b = 29 Sin 88/Sin42

b = 28.98/0.669

b = 43.3

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Answer:

$130

Step-by-step explanation:

price of helmet =discount+ price after discount

=$13.75+$116.25

=$130

a) The point estimate of the population proportion of adults who lack confidence they will be able to afford health insurance in the future is 0.57

b) At 90% confidence, the margin of error is 0.0324.

c) The 90% confidence interval is (0.5376, 0.6024).

d) The 95% confidence interval is (0.5314, 0.6086).

(a) The point estimate of the population proportion of adults who lack confidence they will be able to afford health insurance in the future can be found by dividing the number of respondents who lack confidence (575) by the total number of respondents (1,007):

Point estimate = 575/1007 = 0.57 (rounded to two decimal places)

(b) The margin of error can be calculated using the formula:

Margin of error = z√(p'(1-p')/n)

where z is the z-score associated with the desired level of confidence, p' is the point estimate, and n is the sample size. For a 90% confidence level, the z-score is 1.645.

Margin of error = 1.645√(0.57*(1-0.57)/1007) ≈ 0.0324 (rounded to four decimal places)

(c) The 90% confidence interval can be calculated using the formula:

Point estimate ± Margin of error

Substituting the values:

0.57 ± 0.0324

The 90% confidence interval is (0.5376, 0.6024) (rounded to four decimal places).

(d) The 95% confidence interval can be calculated in the same way, but with a different z-score. For a 95% confidence level, the z-score is 1.96.

Margin of error = 1.96√(0.57(1-0.57)/1007) ≈ 0.0386 (rounded to four decimal places)

0.57 ± 0.0386

The 95% confidence interval is (0.5314, 0.6086) (rounded to four decimal places).

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Answer:

1. s < 40

2. w ≤ 12

3. D ≥ 110

4. D ≤ 3 1/2

5. w ≥ 30

6. m ≥ 45

7. t ≠ 21

8. c < 45

9. D > 1/5

10. s ≠ 45 5/6

11. h ≥ 48

12. P ≠ 5

An inequality to represent the domain of the situation: 0 ≤ x ≤ 6

An inequality to represent the range of the situation: 4 ≤ y ≤ 24

If the equation of the function is [tex]c(x) = n(1.35)^x[/tex], the value of n is: 4.

In Mathematics and Geometry, a domain refers to the set of all real numbers for which a particular function is defined.

Furthermore, the vertical extent of any graph of a function represents all range values and they are always read and written from smaller to larger numerical values, and from the bottom of the graph to the top.

By critically observing the graph of this logarithmic function shown in the image attached above, we can reasonably and logically deduce the following domain and range:

Domain = [0, 6] or 0 ≤ x ≤ 6.

Range = [4, 24] or 4 ≤ y ≤ 24.

Next, we would determine the value of n by using the y-intercept (0, 4);

[tex]c(x) = n(1.35)^x\\\\4=n(1.35)^0[/tex]

n = 4.

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The 58th percentile of the lengths is 489.4 mm.

The 58th percentile of the lengths is calculated from normal distribution curve as shown below.

The mean of the distribution is at the 50th percentile.

The 58th percentile is between the mean and 1 standard deviation above the mean.

Mean (50%) = 480 mm

58% = ?

1 standard deviation above the mean (84%)= M + S.D = 480 mm + 40 mm = 520 mm

We are going to interpolate, to find the approximate value of the length.

50 ----- 480 mm

58 ----- ?

84 ------- 520 mm

(58 - 50)/(84 - 50) = (x - 480)/(520 - 480)

0.235(40) = x - 480

9.4 = x - 480

x = 489.4 mm

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The measure of angle in degrees is 63 degree

We are given that;

The triangle ABC inscribed in the circle.

Now,

m<BAC-63

From isosceles triangle CBD,

m/CBD=m/BCD = 32

This implies that,

m/BDC+32+32=180

m/BDC+64 = 180

m/BDC=180-64

m/BDC = 126

m/BAC =1/2(m/BDC)

= 1/2(126)

= 63

Therefore, by the triangles the answer will be 63 degrees.

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Answer:

55

70

Step-by-step explanation:

Hope this helps! Pls give brainliest!

Answer:

55 and 70

Step-by-step explanation:

5÷2=2.5

20÷8=2.5

45÷18=2.5

so

22×2.5=55

and

28×2.5=70

The linear equation for the scenario is y = x - 12

From the question, we have the following parameters that can be used in our computation:

Represent the original amount with x

and the amount left with y

So, we have

Amout left = x - 12

Using the variable representtaion, we have

y = x - 12

Hence. the scenario is y = x - 12

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Answer:

100 + 5f = 40

5f = -60

f = -12 feet per minute (decrease of 12 feet per minute)

The solutions to the inequality word problem are:

2) a + $68.50 ≥ $175

3) A He needs to save at least $106.50 more.

2) We are told that  Marshall wants to save at least $175 for a new video game system and some games.

So far, he has saved $68.50.

If the amount of money he needs to save extra is a, then the inequality we have:

a + $68.50 ≥ $175

3) a + $68.50 ≥ $175

subtracting $68.50 from both sides gives:

a ≥ 175 - 68.5

a ≥ $106.5

He needs to save at least $106.50 more.

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The surface area of the given composite figure is: 484.38 cm²

The formula for the area of a rectangle is:

Area = Length * Width

The formula for the area of a square is:

Area = side * side

The surface area is simply the area of each of the surfaces of the figure.

Thus, surface area of the given composite figure is:

4(13 * 10) + (10 * 10) + (10 * 10) - 3π(5²))

= 484.38 cm²

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240° is the coterminal angle of 23×π÷3.

First, we can simplify 23 times π over 3 by noticing that 2π is equivalent to 6 pi over 3, so we can add 2π to 23 times pi over 3 until we get an angle between 0 and 2π (or 0 and 360 degrees).

23 times π over 3 is equivalent to an angle of 360 degrees times (23 times π over 3)/(2π), which simplifies to 360 degrees times 23/2, or 4140 degrees.

To find a coterminal angle between 0 and 360 degrees, we can subtract 360 degrees until we get an angle in that range.

4140 - 360(11) = 240

Therefore, a coterminal angle of 23 times pi over 3 between 0 and 360 degrees is 240 degrees.

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The values of x  and y in the geometric progression are 10 and 20

From the question, we have the following parameters that can be used in our computation:

5, x, y, and 40

To calculate the values of x and y, we have

x/5 = 40/y

Cross multiply

So, we have

xy = 200

Set x = 10

So, we have

10y = 200

This gives

y = 20

So, we have

10/5 = 40/20 = 2 --- true

Hence, x is 10 and y is 20

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if A C B, then A n B = A U B is always true

The statement "if A C B, then A n B = A U B" can be rephrased as "if A is a subset of B, then the intersection of A and B is equal to the union of A and B".

Every element of A is also an element of B. Therefore, the intersection of A and B contains all the elements of A.

On the other hand, the union of A and B contains all the elements of A and all the elements of B. Since A is a subset of B, all the elements of A are already included in B, so the union of A and B is just equal to B.

Therefore, we have:

A n B = A (since all the elements of A are in both A and B)

A U B = B (since A is a subset of B)

So A n B = A U B = B, which means that the original statement "if A C B, then A n B = A U B" is true

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Answer: Translation

Step-by-step explanation:

      To get from the pre-transformation shape (red) to the transformed image (blue), a translation takes place. This is where the shape is not rotated, reflected, or stretched, but simplify "slided" or "shifted" somewhere else.

Answer:

F1 8,-2 F2 -5,-3

Step-by-step explanation:

Answer:

The answer and step by step explanation is above

The equation of the line passing through the given points is y = -2x+1.

Given that is a line passing through two points (0, 1) and (2, -3) we need to find the equation of the line using them,

We know that the equation of a line passing through points (x₁, y₁) and (x₂, y₂) is =

y-y₁ = y₂-y₁ / x₂-x₁ (x-x₁)

Here (x₁, y₁) and (x₂, y₂) are (0, 1) and (2, -3),

Therefore, the required equation is =

y-1 = -3-1/2 (x-0)

y-1 = -2x

y = -2x+1

Hence, the equation of the line passing through the given points is y = -2x+1.

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The calculated equation for the exponential function is y = 3(2)ˣ

From the question, we have the following parameters that can be used in our computation:

Points = (2, 12) and (3, 24)

By definition, as exponential function is represented as

y = abˣ

Substitute the known values in the above equation, so, we have the following representation

ab² = 12

ab³ = 24

So, we have

b = 2

This means that

a(2)³ = 24

So, we have

a = 3

Recall that

y = abˣ

So, we have

y = 3(2)ˣ

Hence, the equation for the exponential function is y = 3(2)ˣ

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