brainiest to whoever right

Answer:

1500006875

Step-by-step explanation:

Multiply 2 numbers at a time

The correct statement is;

False,  because x = \(cos^-^1({\frac{-1}{2} )\) is in the interval \(( -\frac{\pi }{2} , \frac{\pi }{2} )\) that is, \(cos^-^1({\frac{-1}{2} )\) = \(\frac{2\pi }{3}\). So all solutions of cos x = -1/2 will be  x = 2π/3 + 2nx and x = 4π/3 + 2nx.

Option D

From the information given, we have that;

All solutions are cos x = -1/2 are given by x = 4x/2 + 2πx

There are multiple solutions to the equation cos x = -1/2, and they are denoted by the values x = 2π/3 + 2nx and x = 4π/3 + 2nx

Such that n is an integer.

This is so because the cosine function repeats itself every 2π, or its period. We therefore multiply the general answer by multiples of 2 to obtain all solutions.

The formula x = 4x/2 + 2πx implies that each solution can be reached by x being multiplied by 4/2 and 2πx being added.

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The monthly cell phone bill when shared data equals zero is given as follows:

$26.

The slope-intercept representation of a linear function is given by the equation presented as follows:

y = mx + b

The coefficients of the function and their meaning are described as follows:

The intercept of the line in this problem is given as follows:

b = 26.

Hence $26 is the monthly cell phone bill when shared data equals zero.

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The new area of the trapezoid, whereby the initial height is doubled, and the length of the bases is decreased by one-fourth is 51 in². Therefore;

A = 51 in²

We have,

The formula for finding the area of a trapezoid can be presented as follows;

A = ((a + b)/2) × h

Where;

a and b are the lengths of the parallel sides

h = The height of the trapezoid

Therefore, we get;

A = ((a + b)/2) × h = 34 in²

When the height is doubled, we get;

The new height = 2·h

When the bases are decreased by one-fourth, we get;

The new sum of the bases = (a + b) × (1 - 1/4) = (a + b) × (3/4)

The new area of the trapezoid, A', is therefore;

A = ((a + b)/2) × h

A' = ((a + b) × (3/4)/2) × 2·h = (3/4) × 2 × ((a + b)/2) × h = 1.5 × ((a + b)/2) × h, which indicates;

A' = 1.5 × A

A' = 1.5 × 34 = 51

The new area of the trapezoid is about 51 square inches

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complete question:

The area of a trapezoid is 34 in2. What is the new area of the trapezoid if the height were doubled and the bases decreased by one-fourth?

Answer:

the answer is 16

Step-by-step explanation:

i hope i helped you but next time study well :)

Answer: -2 and 4

Step-by-step explanation:

Let \(t=x/2\).

\(f(t)=0 \longrightarrow t=-1, 2\\\\\therefore x=-2, 4\)

The tangent line at that point is:

y = (-3/25)*x + 6/5

so m = -3/25, and b = 6/5

To find the slope at that point, we need to evaluate the derivative at that point.

y = 3/x

The derivative is:

y' = -3/x²

When x = 5, we have:

y' = -3/5² = -3/25

So that is the slope, m.

Now let's find the line.

The line must pass trhough the point (5, 3/5), then:

3/5 = (-3/25)*5 + b

3/5 = -3/5 + b

3/5 + 3/5 = b

6/5 = b

The equation of the line is:

y = (-3/25)*x + 6/5

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Answer:

slope = 0

Step-by-step explanation:

Answer:

135

Step-by-step explanation:

100% = 450

1% = 4.5

30% = 4.5 x 30 = 135

Answer:

B

E

EXPLAIN:

A is incorrect

B is correct

C is incorrect

D is incorrect

E is correct

F is incorrect

Answer:  B, E

Step-by-step explanation:

Answer:

We know that:

sin^2a + cos^2a = 1 (1)

Also, we have:

cos a + sin a = 1/2

Squaring both sides of the above equation, we get:

cos^2a + 2cos a sin a + sin^2a = 1/4

Using equation (1), we can simplify this to:

1 + 2cos a sin a = 1/4

Subtracting 1 from both sides, we get:

2cos a sin a = -3/4

Squaring both sides, we get:

4cos^2a sin^2a = 9/16

Using the identity:

sin^2a = 1 - cos^2a

We can rewrite the above equation as:

4cos^2a (1 - cos^2a) = 9/16

Expanding and rearranging, we get:

4cos^4a - 4cos^2a + 9/16 = 0

Multiplying both sides by 16, we get:

64cos^4a - 64cos^2a + 9 = 0

Letting x = cos^2a, we can rewrite this as a quadratic equation:

64x^2 - 64x + 9 = 0

Solving for x using the quadratic formula, we get:

x = (64 ± √16384)/128

x = 1/2 or x = 9/64

Since 0 < a < 2π, we know that cos a is positive, so we can take the positive square root:

cos a = √(1/2) = 1/√2

Substituting this into the equation sin a + cos a = 1/2, we get:

sin a = 1/2 - cos a = 1/2 - 1/√2 = (√2 - 1)/2

Therefore:

sin^2a - cos^2a = ((√2 - 1)/2)^2 - (1/√2)^2

= (3 - 2√2)/4

Therefore, sin^2a - cos^2a = (3 - 2√2)/4.

the answer to the equation is -9

-11/16

(Decimal: -0.6875)

Answer:

1460

Step-by-step explanation:

rounding to the nearest ten, that is nearest to 1456 which would be 1460 (hope this helps! ) ♡

Answer:

1460

Step-by-step explanation:

Original number is 1 4 5 6

To round to the nearest ten, look at the digit in the 10's place and the digit immediately to the right of it

The digit in the tens place is 5

If the digit to the immediate right of this digit is 5 or greater, round the digit in the tens place up by one digit and set the immediate right digit to 0

So 5 rounds up to 6

The 6 to the immediate right(units place becomes 0)

1 4 5 6 rounded to nearest ten==> 1 4 6 0

Step-by-step explanation:

cars= 8, 24

trucks= 20

total ($)=

pounds=5

calories=

Answers and Step-by-step explanations:

(Answers are all bold-ed and underlined.)

For these problems, they are asking you to fill in the blanks by noticing and by trying to find a pattern. In order to determine what the values are, this will require multiplication and division.

Table 1:

For the cars side, we can notice that that side of the table is going by 4's. Because 4, 12 and 16 are all multiples of 4. So, let's fill in this side.

Cars:

4

8

12

16

20

And, if we look at the trucks side, we can also notice a pattern of 5's. The numbers 5, 10, 15, and 25 are all multiples of 5. Now we can fill in the trucks side.

Trucks:

5

10

15

20

25

We can notice a pattern that both sides of the equation are being multiplied by 1, 2, 3, and so on (4x1=4, 4x2=8, 4x3=12...).

Table 2:

This table requires a little bit more work. We are going to need to do division for this problem. First, let's pick a value on the "Total ($)" side. From there, we can then take the "Pounds" side and use that to find the rest of the answers. Because 1.50 is the number below the first column, it will be the easiest to use to find what goes in that first column. And because we are using this column, we also have to use the "Pounds" side as well. So our equation will look something like this:

1.50 ÷ 2 = 0.75

So we can now place this in the first column. We can now use this to fill out the rest of the table. Because 0.75 x 2 = 1.50, then we can conclude that those pounds represent what we are multiplying the 0.75 by.

Total ($):

0.75

1.50

2.25

3.00

6.00

For the pounds side all we have to do is divide the Total ($) sides by the 0.75 to get our answer.

Pounds:

1

2

3

4

8

Table 3:

This table shouldn't be very hard since it already gives us the first value. All we do is just multiply the cookies by the calories to get our answers for the Calories side.

Second column: 35 x 2 = 70, and so onto the rest of the columns.

Calories:

35

70

140

280

350

____________________________________

I hope that this helps.

Answer:

32

Step-by-step explanation:

The height of the higher balloon from the lower balloon will be 330.745 meters.

Trigonometric functions examine the interaction between the dimensions and angles of a triangular form.

He determines that the lower hot air balloon is 365 meters away, at an angle of 23° from the vertical. Then the vertical height of the lower hot air balloon is given as,

tan 23° = 365 / h

h = 859.886 meters

The higher hot air balloon is 1035 meters away, at an angle of 41° from the vertical. Then the vertical height of the higher hot air balloon is given as,

tan 41° = 1035 / H

H = 1190.631 meters

The height of the higher balloon from the lower balloon is given as,

⇒ H - h

⇒ 1190.631 - 859.886

⇒ 330.745 meters

The height of the higher balloon from the lower balloon will be 330.745 meters.

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Answer:

The margin of error is  \(E = 6.9 \)

The 95% confidence interval is  \( 26.5  <  \mu < 40.3 \)  

Step-by-step explanation:

From the question we are told that

    The sample size is  n  =  31

     The mean is  \(\mu = 33.4 \ ng/ml\)

      The standard deviation is  \(\sigma = 19.6 \ ng/ml\)

From the question we are told the confidence level is  95% , hence the level of significance is    

      \(\alpha = (100 - 95 ) \%\)

=>   \(\alpha = 0.05\)

Generally from the normal distribution table the critical value  of  \(\frac{\alpha }{2}\) is  

   \(Z_{\frac{\alpha }{2} } =  1.96\)

Generally the margin of error is mathematically represented as  

      \(E = Z_{\frac{\alpha }{2} } *  \frac{\sigma }{\sqrt{n} }\)

=>  \(E = 1.96  *  \frac{19.6  }{\sqrt{31 } }\)

=>  \(E = 6.9 \)

Generally 95% confidence interval is mathematically represented as  

      \(\= x -E <  \mu <  \=x  +E\)

=> \( 33.4  - 6.9 <  \mu < 33.4  +  6.9 \)

=> \( 26.5  <  \mu < 40.3 \)  

Solution

The Image will be of help

To find x

To find y

The diagram below will help us to find the Surface Area of the Pyramid

The surface area is

To find A1

To find A2

To find A3

The surface Area

Thus,

Answer: f(x) has an axis of symmetry at x = 4 and h(x) has an axis of symmetry at x = -2

Step-by-step explanation:

You can easily find the axis of symmetry by investigating around which line the functions are symmetrical about

for instance, in h(x), the graph is symmetrical on either side of x = -2, meaning that the line x = -2 cuts the parabola in 'half'

in f(x), this is a little harder to think about, but if you know how the graph will be shifted on the x-axis you can figure it out! In this case (x-4)^2 means that the graph will be shifted on the x-axis 4 units to the right (or from the origin to +4 on the X axis)

as such the line x = 4 will cut the function f(x) in 'half'

Answer: (a) True

Step-by-step explanation:

Answer:

Cost of pencil = $20

Cost of copy = $6

Step-by-step explanation:

Statement.

Gill buys 14 copy and 12 pencils and pays a total $324, if the value of 1 copy and 1 pencil is $26, find cost of copy and pencil.

Computation:

Assume.

Cost of copy = x

Cost of pencil = y

So,

x + y = 26.......Eq1

And

14x + 12y​ = 324.........Eq2

From Eq1 ad Eq2

Cost of pencil = $20

So,

Cost of copy = $6

Niall and Zayn buy 14 concert tickets for them and their friends to go see 5sos and 12 concert tickets for them and their friends to go see Little Mix with a total cost of $648. If the value of 1 5sos ticket and 1 Little Mix ticket is $52, and the Little Mix ticket is $4 more than the 5sos ticket, find cost of both tickets.

5sos = x

Little Mix = y

52 / 2 = 26

26 - 2 = 24

26 + 2 = 26

x = 24

y = 28

5sos tickets = $24 each

Little Mix tickets = $26 each

Answer:

-5

Step-by-step explanation:

Yan po sagut

Sana makatulong

Answer:

haha

Step-by-step explanation:

first off thats not 50 points

Answer:

Step-by-step explanation For the first on 5 and -4 all u do is divide y over x so it wpuld be -4/5 which would be -0.8

just keep doing the process of dividing y over x

the second 1 would be 0/3 which is 0

just keep doing this process

For the given points, vector in component form equals -6i^ - 7j^ and its magnitude is 9.22

A quantity or phenomena with independent qualities for both magnitude and direction is called a vector. The term can also refer to a quantity's mathematical or geometrical representation. Velocity, momentum, force, electromagnetic fields, and weight are a few examples of vectors in nature.

Examples of vectors include displacement, velocity, acceleration, force, and others that show both the direction and the size of a quantity. Vector: The displacement is -4 feet, while the velocity is -40 miles per hour. Negative displacement and velocity indicate that the object is travelling counterclockwise.

Vector in component form -

(-4 -2)i^ + (-2-5)j^

= -6i^ - 7j^

Magnitude of the vector equals =

√(-6)² + (-7)² = √85 = 9.22

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Complete Question -

Vector w has its initial point at (2, 5) and its terminal point at (-4, -2). Write the vector in component form and find its magnitude.

The percentage is 50%

From the question we are told that  

The  mean is μ= 14 hours

The  standard deviation is σ=1 hour

Generally on the normal distribution curve the mean divides the curve into  two. with the half to the left of the mean (50% to the left )representing the percentage of the batteries that will last less than 14 hours and  the area under the curve to the right (50% to the right)representing the percentage of batteries that will last longer than mean (14 hours )

Hence the percentage of the cell phone batteries that will be expected to last longer than 14 hours is 50%

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The length of one side of the equilateral triangle in terms of x is 6x.

To find the length of one side of the equilateral triangle in terms of x, we need to consider the perimeter of both the rectangle and the equilateral triangle.

The perimeter of a rectangle is given by the formula:

Perimeter of rectangle = 2(length + width)

In this case, the length of the rectangle is 7x cm, and the width is 2x cm. Substituting these values into the formula, we have:

Perimeter of rectangle = 2(7x + 2x) = 2(9x) = 18x

We are told that the equilateral triangle has the same perimeter as the rectangle.

Since an equilateral triangle has all sides equal, the perimeter can be calculated by multiplying the length of one side by 3.

Therefore, we have:

Perimeter of equilateral triangle = 3(side length)

Since the perimeter of the equilateral triangle is equal to the perimeter of the rectangle (18x), we can set up the equation:

3(side length) = 18x

Dividing both sides of the equation by 3, we get:

side length = 6x

Hence, the length of one side of the equilateral triangle in terms of x is 6x.

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The complete question may be like: A rectangle measures 2x cm by 7x cm. An equilateral triangle has the same perimeter as the rectangle. What is the length of one side of the triangle in terms of x?

Answer:

less than twenty five

v

25 - (2n + 8) < the sum of 2 times N plus 8.

Step-by-step explanation:

Answer:

24xy - 32y

Step-by-step explanation:

4y × 6x =24xy

4y × -8 = -32y

brainliest plz? i got 1000+ points deleted

Answer:

4y(6x-8)

\(4y \times (6x - 8)\)

\(4y \times - 6x + 8\)

\( - 24xy + 8\)

\( - 32xy\)

Answer

Answer:

x = 5

Step-by-step explanation:

to get x alone you need to add 3 to both sides

3+2 = x -3 +3

x = 3+2

Answer:

x = 5

Step-by-step explanation:

First, you can move -3 to the left hand side. This results in \(2 + 3=x\), now, we add 2+3. \(5=x\). This is optional: Now, you can switch the placements so it looks easier to read; \(x=5\)

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