Find the value of the indicated angles. 8 is incorrect! I'm so confused.. SHOW YOUR WORK!!

Answer:

A = 146.624 cm

Step-by-step explanation:

Variable a, is one base and variable b is the other base. Variable h is the hight of the trapezoid.

Answer:

146.624cm^2

Step-by-step explanation:

do the split method again :D (10.5cm+21.1cm)(9.28cm/2)

Answer:

The sum of the first 499 terms is 249001

Step-by-step explanation:

* Lets revise the arithmetic sequence

- There is a constant difference between each two consecutive

  numbers

- Ex:

# 2  ,  5  ,  8  ,  11  ,  ……………………….

# 5  ,  10  ,  15  ,  20  ,  …………………………

# 12  ,  10  ,  8  ,  6  ,  ……………………………

* General term (nth term) of an Arithmetic sequence:

- U1 = a  ,  U2  = a + d  ,  U3  = a + 2d  ,  U4 = a + 3d  ,  U5 = a + 4d

- Un = a + (n – 1)d, where a is the first term , d is the difference

 between each two consecutive terms n is the position of the

 number

- The sum of first n terms of an Arithmetic sequence is calculate from

 Sn = n/2[a + l], where a is the first term and l is the last term

* Now lets solve the problem

∵ The terms of the sequence are 1 , 3 , 5 , 7 , ......... , 997

∵ The first term is 1 and the second term is 3

∴ The common difference d = 3 - 1 = 2

∵ The first term is 1

∵ The last term is 997

∵ The common difference is 2

- Lets find how many terms in the sequence

∵ an = a + (n - 1) d

∴ 997 = 1 + (n - 1) 2 ⇒ subtract 1 from both sides

∴ 996 = (n - 1) 2 ⇒ divide both sides by 2

∴ 498 = n - 1 ⇒ add 1 for both sides

∴ n = 499

∴ The sequence has 499 terms

- Lets find the sum of the first 499 terms  

∵ Sn = n/2[a + l]

∵ n = 499 , a = 1 , l = 997

∴ S499 = 499/2[1 + 997] = 499/2 × 998 = 249001

* The sum of the first 499 terms is 249001

Final answer:

The sum of the series 1+3+5+7+...+997 is calculated using Gauss's approach for arithmetic series, resulting in a sum of 249500.

Explanation:

To find the sum of the series 1+3+5+7+...+997 using Gauss's approach, we first recognize that this is an arithmetic series where each term increases by a constant difference, in this case, 2. The first term, a, is 1 and the last term, l, is 997. We can find the number of terms, n, in the series using the formula: n = (l - a) / common difference + 1, which in this case is (997 - 1) / 2 + 1 = 499. Then, the sum of an arithmetic series can be found using the formula: Sum = n/2 * (a + l), so the sum of this series is 499/2 * (1 + 997) = 249500.

Answer: see attachments

Step-by-step explanation:

Use Pythagorean Theorem to find the missing side (x² + y² = h²)

Use the following formulas to find the trig functions:

[tex]sin\theta=\dfrac{y}{h}\qquad \qquad csc\theta=\dfrac{h}{y}\\\\\\cos\theta=\dfrac{x}{h}\qquad \qquad sec\theta=\dfrac{h}{x}\\\\\\tan\theta=\dfrac{y}{x}\qquad \qquad cot\theta=\dfrac{x}{y}[/tex]

Answer:

  (b)  3x -5

Step-by-step explanation:

You can slog through the entire long division process, or you can realize that the product of the quotient constant and the divisor constant must match the dividend constant. If we let q represent the quotient constant, you must have ...

  4q = -20

  q = -20/4 = -5

The only answer choice with a constant of -5 is choice B, 3x -5.

I don’t know what answer Is I wish I could help

- 1 <= sin (a) <= 1

-2+5*(-1)<= -2+5sin(pi/12)(x-2)<= -2 +5*(1)

so

the minimum value of y is

y = - 2 + 5 * ( - 1 ) = - 7

hope this would help you

Answer:

[tex]\Large \boxed{-7}[/tex]

Step-by-step explanation:

We can find the minimum of the function by plotting the function on the graph.

[tex]\displaystyle \mathrm{y=-2+5 \cdot sin(\frac{\pi }{12}(x-2) )}[/tex]

The minimum value is the y value of the lowest point on the graph.

$50 per day x 6 days = 300

20% = 0.2, times t = 0.2t

The equation would be: f(t) = 300 + 0.2t

Answer:

Option D:[tex]f(t)=300+0.2 t[/tex]

Step-by-step explanation:

We are given that Mikayla is a waitress

She makes a guaranteed per day =$50

Her tips per day =20 % of weekly tips t

We have to find a function that represents the amount of money makes by Mikayla in one week

[tex]20% of t=\frac{20}{100}t=0.2t[/tex]

She works per week=6 days

She earns in 6 days=[tex]50\times 6[/tex]=$300

Total earning of Mikayla in one week =[tex]300+0.2t[/tex]

[tex]f(t)=300+0.2 t[/tex]

Hence, option D is true.

Answer:

    0.3643

Step-by-step explanation:

3.643×10^-1 = 3.643×(1/10) = 3.643×0.1 = 0.3643

Answer:

E = 151 2/3

Step-by-step explanation:

We need to set up a system of equations to solve for the 2 unknowns.  The first equation is very basic, taken from the sentence "...their total weight is 225 pounds..."

This is

B + E = 225 in equation form.

Next, we know that E is twice the weight of B plus 5 (wording it a little differently helps eliminate the seeming ambiguity of the order things go in).  That looks like this algebraically:

E = 2B + 5

From above, we know that E + B = 225, so let's sub in the equivalent statement for E to get an equation with only one unknown:

B + (2B + 5) = 225 which simplifies to 3B = 220 and B = 73 1/3 pounds.

E can be found now by plugging the value of B:

E = 2(73 1/3) + 5

E = 151 2/3 pounds

The weight of E and B is calculated given their total weight and the relationship between their weights.

The weight of E can be represented as 2B + 5. Given that the total weight of E and B is 225 pounds, we can set up the equation: 2B + 5 + B = 225. Solving this equation, we find B = 70 and E = (2 × 70) + 5 = 145 pounds.

Answer:

none of the above

Step-by-step explanation:

All of the answer choices agree that the magnitude of the components is 150/√2 ≈ 106.1. The units of these components should be "mph", the same as the units of the magnitude of the given vector.

We only know the angle with respect to horizontal. We don't know whether that angle is measured with respect to the positive x-axis or the negative x-axis. Both of those are horizontal, and there is nothing in the problem statement that restricts the airplane to be traveling in one direction or the other.

Possible answers are ...

<106.1 mph, -106.1 mph> . . . . . . "horizontal" is +x direction

<-106.1 mph, -106.1 mph> . . . . . "horizontal" is -x direction

(The units are not degrees (°).)

Answer:

The appropriate compound inequality is then 14 ft ≤ W ≤ 16 ft

Step-by-step explanation:

30 ft perimeter:  P = 30 ft = 2L + 2W = 2(8 ft) + 2W

Solving for W, we get:  30 ft - 16 ft = 14 ft.  The minimum width, W, is 14 ft.

32 ft perimeter:  

P = 32 ft = 2L + 2W = 2(8 ft) + 2W

Solving for W, we get:  32 ft - 16 ft = 16 ft.  The minimum width, W, is 16 ft.

The appropriate compound inequality is then 14 ft ≤ W ≤ 16 ft

Answer:

Range of width = [7,8]

Step-by-step explanation:

Let w be the width of garden,

The length of garden, l = 8 feet

We have perimeter = 2 x ( length + width)

Perimeter = 2 x ( 8 + w)

The perimeter of the garden must be at least 30 feet and no more than 32 feet.

That is

             30 ≤ 2 x ( 8 + w) ≤ 32

             15 ≤ 8 + w ≤ 16

              7 ≤ w ≤ 8

So range of width = [7,8]

Answer:

Both a and b are independent (see explanation)

Step-by-step explanation:

Events A and B are independent when

[tex]P(A\cap B)=P(A)\cdot P(B)[/tex]

a) A - "winning"

B - "playing at home"

From the table,

[tex]P(A)=0.25\\ \\P(B)=0.8\\ \\P(A\cap B)=0.2[/tex]

Since

[tex]0.25\cdot 0.8=0.2[/tex]

events are independent.

b) A - "losing"

B - "playing away"

From the table,

[tex]P(A)=0.75\\ \\P(B)=0.2\\ \\P(A\cap B)=0.15[/tex]

Since

[tex]0.75\cdot 0.2=0.15[/tex]

events are independent.

The mass of the gasoline in the container is 2657.81grams

The ratio of the mass of an object to its volume is its density. Mathematically;

Density = Mass/Volume

Mass = density * volume

Given the following

Density =  750 kg/m³.

Determine the volume

Volume = πr²h
Volume =3.14(0.75)² * 2

Volume = 3.54375 m³

Determine the mass

Mass = 750 * 3.54375

Mass = 2657.81grams

Hence the mass of the gasoline in the container is 2657.81grams

Learn more on density here:  https://brainly.com/question/1354972

#SPJ2

Answer:

2649 kg

Step-by-step explanation:

I just took the test

Answer:

There are 288 cups left

Step-by-step explanation:

Take the amount that were there (395) and subtract the amount that were sold (177).  that is the amount that are left

395-177 = 218

There are 288 cups left

after selling 177 cups, there are 218 lemon ice cups still at the snack shop.

To calculate how many lemon ice cups are still at the snack shop after some were sold, we need to perform a simple subtraction operation. The initial quantity of lemon ice cups was 395. After selling 177 cups, we subtract 177 from 395 to find out how many are left.

Here's the calculation:

So, after selling 177 cups, there are 218 lemon ice cups still at the snack shop.

Answer:

B. 25

Step-by-step explanation:

In order to find out the value of x + 2, you need to know what x is.  Let's solve for it then sub it back in to evaluate the expression.

3(x+2)=5(x-8) distributes out to give you

3x + 6 = 5x - 40.  Get like terms together on opposite sides of the equals sign:

46 = 2x and divide to get x = 23.  Now that we know that x = 23, that means that x + 2 is the same as 23 + 2 which is 25.

D.All interior angles are 90 degrees

Let's analyze each choice to determine which one is the exception, that is, a property that is not shared between a square and a rhombus:
A. Opposite pairs of sides are parallel:
This is true for both a square and a rhombus. By definition, both a square and a rhombus have opposite sides that are parallel.
B. Opposite pairs of sides are congruent:
This property also holds true for both squares and rhombi. In a square, all four sides are equal in length. In a rhombus, opposite sides are equal in length.
C. Pairs of interior and exterior angles are supplementary:
Again, this is a common feature of both squares and rhombuses. In any parallelogram (which includes both squares and rhombuses), each pair of interior and exterior angles on the same side are supplementary, totaling 180 degrees.
D. All interior angles are 90 degrees:
This is where we can find the exception. In a square, all four interior angles are indeed 90 degrees. However, this is not the case for a rhombus. A rhombus does not necessarily have right angles; its angles can be of any measure as long as opposite angles are equal and the sum of the angles is 360 degrees, which is true for any quadrilateral.
Therefore, the correct answer to the question is:
D. All interior angles are 90 degrees
This is the property that is not common between a square and a rhombus, making it the exception.

Answer:

The answer in the procedure

Step-by-step explanation:

we know that

One tricycle has one seat, three wheels and two pedals

so

The number of seats is equal to 288*1=288 seats

The number of wheels is equal to 288*3=864 wheels

The number of pedals is equal to 288*2=576 pedals

Answer:

The volume of the prism = 27√3/2 inches³ (≅ 23.38 inches³)

Step-by-step explanation:

* Lets revise the volume of the triangular prism

- The prism has 5 faces

- Two triangular bases

- Three rectangular side faces

- The rule of its volume = Area of its base × its height

* Now lets solve the problem

- The bases of the prism are equilateral triangles of side 3 inches

- The side faces of the prism are rectangles of dimensions 3 and 6 inches

∵ Its volume = Area of the its base × its height

- The bases are equilateral triangles

∵ The area of the equilateral triangle = √3/4 s² , where s is the

   length of its side

∵ The length of the side = 3 inches

∴ The area of the base = √3/4 (3)² = 9√3/4 inches²

∵ Its height = 6 inches

∴ Its volume = 9√3/4 × 6 = 27√3/2  inches³

* The volume of the prism = 27√3/2 inches³ (≅ 23.38 inches³)

Answer:

5

Step-by-step explanation:

So we want to find the value of x where the area to the left of it is equal to 0.6.

Let's start by finding the area of the first triangle, between x=0 and x=4.

A = 1/2 bh

A = 1/2 (4) (0.2)

A = 0.4

So we know a > 4.  What if we add the area of that rectangle?

A = 0.4 + bh

A = 0.4 + (1) (0.2)

A = 0.6

Aha!  So a = 5.

Answer:

1. modulus: 2; argument: 3π/2 (radians)

2. modulus: 5; argument: π (radians)

Step-by-step explanation:

The modulus is the magnitude of the number. When the number is aligned with one of the axes, it is simply the absolute value of the non-zero component. The argument is the arctangent of the imaginary part divided by the real part, with respect given to signs. Again, when the number is aligned with one of the axes, that angle will be some multiple of π/2 radians, where arg(i) = π/2; arg(-1) = π; arg(-i) = 3π/2; arg(1) = 0.

1. the number is aligned with the negative imaginary axis. Its magnitude is |-2| = 2, and its argument is 3π/2.

__

2. the number is aligned with the negative real axis. Its magnitude is |-5| = 5, and its argument is π.

[tex]\bf (\stackrel{a}{2}~,~\stackrel{b}{-1})\qquad \begin{cases} r=\sqrt{a^2+b^2}\\\\ \theta =tan^{-1}\left( \frac{b}{a} \right) \end{cases} \\\\[-0.35em] ~\dotfill\\\\ r=\sqrt{2^2+(-1)^2}\implies r=\sqrt{5} \\\\\\ \theta =tan^{-1}\left( \cfrac{-1}{2} \right)\implies \theta \approx -26.57^o\implies \theta \approx 333.43^o \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill (\sqrt{5}~~,~~333.43^o)~\hfill[/tex]

Answer:

[tex](r,\theta); (\sqrt{5} , tan^{-1}(\frac{x}{y}))\\(r,\theta); (-\sqrt{5} , -tan^{-1}(\frac{x}{y}))[/tex]

Step-by-step explanation:

Here we are given our rectangular coordinates as (2,-1) . We have to convert this into polar coordinates. The formula for conversion into polar form is

[tex]r=\sqrt{x^2+y^2}[/tex]

[tex]\theta=tan^{-1}(\frac{x}{y})[/tex]

Substituting the values of x and y in the above formulas we get

[tex]r=\sqrt{2^2+(-1)^2}\\r=\sqrt{4+1}\\r=\sqrt{5}\\r=-\sqrt{5}\\[/tex]

[tex]\theta=tan^{-1}(\frac{-1}{2})[/tex]

Hence our polar coordinates are

[tex]r=(\sqrt{5},tan^{-1}(\frac{-1}{2}) )\\r=(-\sqrt{5},tan^{-1}(\frac{-1}{2}) )\\[/tex]

Answer:

  800,000,000

Step-by-step explanation:

Subtract the known numbers from the sum to find the missing number:

  800,903,402 - 900,000 -2 -3,000 -400 = 800,000,000

1.Make y the subject

k = xy

k/x = xy/x

y = k/x

2.Substitute

y = k/x

y = 7/9

y = 0.777......

y = 0.8 (Answer)

To confirm

k = xy

k = 9 × 0.8

k = 7.2

k = 7 (constant)

Hope it helps☺

Answer:

7/9

Step-by-step explanation:

Answer:

The answer would be division (B)

Step-by-step explanation:

4x equals the total amount

x equals the cost of one item

Therefore you'd divide total cost by 4 and that would find the cost of one item

Answer:

We will use division operation

Step-by-step explanation:

Let x be the cost of 4 items

So, cost of 1 item = [tex]\frac{x}{4}[/tex]

So, we have used division operation

So, to find out how much one costs, we will use division operation

So, Option B is true

Hence we will use division operation

Answer:

64π/5 cubic units.

Step-by-step explanation:

The line x = 2 and y = x^3 intersect at the point (2 , 2^3) = (2, 8).

The required volume = volume of the cylinder with height 8 and radius 2 - the volume of shape form between the curve and the y axis when revolved about the y-axis.

Using the disk method for volumes of revolution:

Note that x = y^1/3 so:

the second volume =   Integral  π ((y^1/3)^2) dy  between y = 0 and y = 8.

=  3/5 y^5/3 * π between 0 and 8

= 96π/5.

The required volume = π 2^2 *8 - 96π/5

= 32π - 96π/5

= 64π/5.

Answer:

$123.25

Step-by-step explanation:

A selling price reflecting a 45% markup can be found by multiplying the wholesale price ($85) by (1 + 0.45), or  1.45:

1.45($85) = $123.25

Answer:

True

Step-by-step explanation:

The circumcenter is the center of the circumscribing circle, the circle that intersects each of the vertices. Since the points on a circle are equidistant from its center, the vertices of a triangle are equidistant from the circumcenter.

Final answer:

The circumcenter of a triangle is the point that is equidistant from the vertices of the triangle.

Explanation:

True

The circumcenter of a triangle is the point that is equidistant from the vertices of the triangle. This means that the distance from the circumcenter to each vertex of the triangle is the same.

For example, in an equilateral triangle, the circumcenter is the point where all the perpendicular bisectors of the sides intersect.

Answer:

the net change would be 22.50!

Step-by-step explanation:

add 4.50 5 times!

Answer:

The net change to Ian’s account after the utility company lives up to the agreement will be $22.50.

Step-by-step explanation:

The utility company made a mistake on Ian’s electric bill.

The company has agreed to credit Ian’s account for five transactions, each worth $4.50

This gives [tex]4.50\times5=22.50[/tex] dollars

So, the net change to Ian’s account after the utility company lives up to the agreement will be $22.50.

Answer:

the answer is the 3 one I'm 90% sure

The volume and the surface area of the hemisphere in terms of π are 3888π in³ and 972π in² respectively.

The volume of a hemisphere can be found using the formula given below:

Volume = (2/3)πr^3

The surface area of a hemisphere can be found using the formula given below:

Surface Area = 3πr^2

The figure is provided. From the figure, we can see that the radius of the hemisphere is 18 inches.

The volume of the hemisphere can be found as shown below:

Volume = (2/3)π*18*18*18 in³

= 3888π in³

The surface area of a hemisphere can be found as shown below:

Surface Area = 3π*18*18 in²

= 972π in²

We have found the volume and the surface area of the hemisphere. The volume and the surface area of the hemisphere are 3888π in³ and 972π in² respectively.

Therefore, we have found that the volume and the surface area of the hemisphere in terms of π are 3888π in³ and 972π in² respectively. The correct answer is option B.

Learn more about hemispheres here: https://brainly.com/question/333717

#SPJ2

since the diameter of the circle is 10, then its radius must be half that or 5.

[tex]\bf \textit{arc's length}\\\\ s=\cfrac{\pi \theta r}{180}~~ \begin{cases} r=&radius\\ \theta =&angle~in\\ &degrees\\ \cline{1-2} r=&5\\ \theta=&180 \end{cases}\implies s=\cfrac{\pi (180)(5)}{180}\implies s=5\pi \implies s\approx 15.71[/tex]

Answer:

The correct answer is 15.7 inches

Step-by-step explanation:

Points to remember

Circumference of a circle = 2πr

Where r is the radius of circle

To find the value of arc length

It is given that, diameter = 10 inches

Radius = diameter/2 = 10/2 = 5 inches

Circumference =  2πr

 = 2 * 3.14 * 5

 = 31.4

central angle of arc =180

Arc length = (180/360) * circumference

 = (1/2) * 31.4

 = 15.7 inches

Therefore the correct answer is 15.7 inches