the frequency of the musical note c4 is about 126.63 hz
what is the frequency of the note one octave above c4
Choices
987.76 hz
740.82 hz
253.26 hz
246.94 hz

Answer: Option a.

Domain: (-∞, ∞)

Range: (-∞, ∞)

Step-by-step explanation:

We have the function [tex]f(x) = 2x + cosx[/tex]

Note that f(x) is the sum of two continuous functions [tex]h(x) = 2x[/tex] and [tex]g(x) = cosx[/tex]

The domain and range of h(x) are all real numbers

The domain of g(x) is all real numbers. The range of g(x) is [-1, 1]

Then the domain of [tex]f(x) = h(x) + g(x)[/tex] will be the intersection of the domains of the function [tex]h(x) = 2x[/tex] and the function [tex]g(x) = cosx[/tex].

Therefore the domain of f(x) are all real numbers.  x ∈ (-∞, ∞)

The range of f(x) will be equal to the union of the range of g(x) and h(x)

Therefore the range will be all real numbers f(x) ∈ (-∞, ∞)

Answer: 118.3 m^2

Step-by-step explanation:

Use Heron's formula: √s(s-a)(s-b)(s-c)

s= a+b+c/2

13+18.2+22.3/2 = 26.75

√26.75(26.75-13)(26.75-18.2)(26.75-22.3)

√26.75(13.75)(8.55)(4.45)

√13994.34609

118.297701 = 118.3 m^2

Answer:8462

Step-by-step explanation:

Answer:

8862 feet

Explanation:

The formula for circumference is C=pi*diameter. So, by substitution we can use 26586=(3)d and solve by dividing 26586 by 3 which gives us d=8862 feet.

Answer: 5 Vertices

Step-by-step explanation: I believe if it had 4 faces and 8 edges it would have 5 vertices.

39.4 degrees Celsius

Hope this helps :)

Answer:

39.4°C

Step-by-step explanation:

The equation for fahrenheit to celsius is

(°F − 32) × 5/9 = °C

With our variable of 103 plugged in it is

(103°F − 32) × 5/9 = 39.444°C

Therefore, her fever is 39.4°c

Answer:

  62 Sunday papers were sold

Step-by-step explanation:

Let x represent the number of Sunday papers sold. Then half that many, or x/2, is the number of Friday papers sold. The total revenue from the sales is the sum of products of quantity and price:

  1.50 · x + 0.75 · (x/2) = 116.25

Multiplying by 2, this becomes ...

  3.00x +0.75x = 232.50

  3.75x = 232.50

Dividing by the coefficient of x gives ...

  232.50/3.75 = x = 62

The number of Sunday newspapers sold is 62.

Answer:

No, it is not safe

Answer:

Hello!

The answer is no, he will not be safe. I had a similar problem on a test and got the answer correct. The only difference was they used slightly different numbers, so I am pretty sure this is correct. I hope this helps!

Step-by-step explanation:

Okay, so you are looking for x.

sin x= [tex]\frac{16.5}{17}[/tex]

x=[tex]sin^{-1}[/tex]([tex]\frac{16.5}{17}[/tex])

x≈76.07

76.07>70

Answer:

15 g

Step-by-step explanation:

30% · 50 g = 30/100 · 50 g = 1500/100 g = 15 g

Answer:

15g

Step-by-step explanation:

Answer:

559.2 yards.

Step-by-step explanation:

Let the height of the mountain be x yards and the distance from the second location to the base of the mountain be y yards.

Then we have the equations:

tan 27 = x/y

tan 23 = x / (220 + y)

From the first equation  y =  x/ tan27 so substituting in the second one we have:

tan 23 =  x / (220 + x / tan 27)

Cross multiply:

x = 220 tan23 +  x tan 23 / tan 27

x =  93.384 + 0.833 x

x - 0.833x = 93.384

x = 93.384 / 0.167

x = 559.2 yards to 1 dec place (answer).

B. Three. It is three because there is one decimal place in each factor.

Answer:

B. Three.

Explanation:

Three because there is one decimal place in each factor and there are 3 factors.

Answer:

Step-by-step explanation:

l - length

w - width

The formula of a perimeter of a rectangle: P = 2(l + w)

The formula of an area of a rectangle: A = lw

We have P = 46in and A = 76in² Substitute:

(1)     2(l + w) = 46

(2)    lw = 76

2(l + w) = 46     divide both sides by 2

l + w = 23          subtract w from both sides

l = 23 - w

subtitute it to (2):

(23 - w)w = 76              use the distributive property

23w - w² = 76              subtract 76 from both sides

-w² + 23w - 76 = 0           change the signs

w² - 23w + 76 = 0

w² - 4w - 19w + 76 = 0

w(w - 4) - 19(w - 4) = 0

(w - 4)(w - 19) = 0 ⇔ w - 4 = 0 or w - 19 = 0

w - 4 = 0           add 4 to both sides

w = 4

w - 19 = 0           add 19 to both sides

w = 19

Put the values of w to (1):

l = 23 - 4 = 19 or l = 23 - 19 = 4

Answer:

Option 1.

[tex]P(A) = \frac{1}{8},\ P(A|B) = \frac{1}{3}[/tex]     Dependent

Option 2

[tex]P(A) = \frac{1}{4},\ P(A|B) = \frac{1}{4}[/tex]    Independent

Option 3

[tex]P(B) = \frac{1}{8},\ P(B|A) = \frac{1}{4}[/tex]    Dependent

Option 4

[tex]P(B) = \frac{1}{4},\ P(B|A) = \frac{1}{4}[/tex]     Independent

Step-by-step explanation:

Two events A and B are independent if the occurrence of A does not affect the probability of B.

On the other hand The probability of A given B is defined as:

[tex]P (A | B) = \frac{P (A\ and\ B)}{P (B)}[/tex]

When two events are independent then:

[tex]P (A\ and\ B) = P (A) * P (B)[/tex]

So if the two events A and B are independent this means that:

[tex]P (A | B) = \frac{P (A) * P (B)}{P (B)}[/tex]

[tex]P (A | B) = P (A)[/tex]

Which makes sense because if the events are independent then the probability of A not being affected by B.

So to solve this problem identify in what cases

[tex]P (A | B) = P (A)[/tex] or [tex]P (B | A) = P (B)[/tex]

When this happens those events are independent

Option 1.

[tex]P(A) = \frac{1}{8},\ P(A|B) = \frac{1}{3}[/tex]     Dependent

Option 2

[tex]P(A) = \frac{1}{4},\ P(A|B) = \frac{1}{4}[/tex]    Independent

Option 3

[tex]P(B) = \frac{1}{8},\ P(B|A) = \frac{1}{4}[/tex]    Dependent

Option 4

[tex]P(B) = \frac{1}{4},\ P(B|A) = \frac{1}{4}[/tex]     Independent

Answer:

the point r would be located at (4,3)

Step-by-step explanation:

granted that the quadralaterel is a square that would mean that all side lengths are equal and the distance between points x and q is 3 meaning that the same would have to be said about the distance between s and r

20% off, means that 20% of the regular price is how much you would save.

Multiply the original price by 20%

18 x 0.20 = 3.6

The discount is $3.60

Answer:

x must be 5

Step-by-step explanation:

Recall that the area formula for a trapezoid is

A = (average of base lengths)(width)

Here we have

                                                                   17 cm + x

      (average of base lengths) = 11 cm = ----------------

                                                                           2

So 2(11 cm) = 17 cm + x, or

      22 cm = 17 cm + x

Then x must be 5.

To find the length of the other base of the trapezoid with a midsegment of 11 cm and one base of 17 cm, use the average property of the midsegment. The calculation reveals the other base is 5 cm in length.

The question is about finding the length of the other base of a trapezoid when the length of the midsegment and one of the bases is known. The midsegment of a trapezoid is parallel and equal to the average of the two bases. Therefore, if the midsegment is 11 cm and one base is 17 cm, the other base can be found by setting up the equation:

Midsegment = (Base1 + Base2) / 2

Substitute the known values:

11 = (17 + Base2) / 2

Multiplying both sides by 2 gives:

22 = 17 + Base2

Subtracting 17 from both sides gives:

Base2 = 22 - 17

Base2 = 5

Thus, the length of the other base of the trapezoid is 5 cm.

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Answer:

The radius is r=5 units

Step-by-step explanation:

we know that

The equation of the circle in standard form is equal to

[tex](x-h)^{2}+(y-k)^{2}=r^{2}[/tex]

where

(h,k) is the center and r is the radius

we have

[tex]x^{2}+y^{2}-12x+6y+20=0[/tex]

Convert to standard form

Group terms that contain the same variable, and move the constant to the opposite side of the equation

[tex](x^{2}-12x)+(y^{2}+6y)=-20[/tex]

Complete the square twice. Remember to balance the equation by adding the same constants to each side

[tex](x^{2}-12x+36)+(y^{2}+6y+9)=-20+36+9[/tex]

[tex](x^{2}-12x+36)+(y^{2}+6y+9)=25[/tex]

Rewrite as perfect squares

[tex](x-6)^{2}+(y+3)^{2}=5^{2}[/tex]

therefore

The center is the point (6,-3) and the radius is r=5 units

ANSWER

B. 13cm

EXPLANATION

The radius of the circle becomes the hypotenuse of the right triangle formed.

We can use the Pythagoras Theorem to obtain,

AC²+CY²=r²

This implies that,

r²=5²+12²

r²=25+144

r²=169

Take positive square root to get;

r=√169

r=13

AB and AC are two equal chord of a circle, therefore the centre of the circle lies on the bisector of ∠BAC.

OA is the bisector of ∠BAC.

Again, the internal bisector of an angle divides the opposite sides in the ratio of the sides containing the angle.

P divides BC in the ratio 6:6=1:1.

P is mid-point of BC.

OP ⊥ BC.

In △ ABP, by pythagoras theorem,

AB2=AP2+BP2

BP2=36−AP2         ....(1)

In △ OBP, we have

OB2=OP2+BP2

52=(5−AP)2+BP2

BP2=25−(5−AP)2      .....(2)

From 1 & 2, we get,

36−AP2=25−(5−AP)2

36=10AP

AP=3.6cm

Substitute in equation 1,

BP2=36−(3.6)2=23.04

BP=4.8cm

BC=2×4.8=9.6cm

Answer:

Use the square root function on your calculator

Step-by-step explanation:

Look at the third line down, where is says that 936 = AD^2.  If you hit the 2nd button on your calculator then the x^2 button, you will get the square root function.  After you hit those buttons in that order, you'll get the opportunity to find the square root of 936 by entering it in and hitting "enter" on your calculator.  The square root of 936 is 30.59417

Answer:

It would be 139$

Step-by-step explanation:

In order to find a percent of a value you first move the decimal place over 2 to the left or divide by 100(percentage is no longer there). In this case it would be .20. You multiply that with the total number(695) and the product is your answer.

Answer:

(-5 +/- sqrt(65))/2

Step-by-step explanation:

To solve this, we can use the quadratic formula!

So,

x = (-b +/- sqrt(b^2-4ac))/2a

x = (-5 +/- sqrt(25+40))/2

x = (-5 +/- sqrt(65))/2

So (-5 +/- sqrt(65))/2  is our answer.

Answer:

x= 0 and x=-3/4

Step-by-step explanation:

[tex]4x^2 + 3x =0[/tex]

We need to solve this equation using quadratic formula.

The quadratic formula is:

[tex]x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

for the type of equation

[tex]ax^2 +bx+c=0[/tex]

So, for our given equation:

a= 4

b= 3

c=0

putting values in the formula

[tex]x=\frac{-3\pm\sqrt{9-0}}{8}\\x=\frac{-3\pm3}{8}\\x=\frac{-3+3}{8}\,and\, x=\frac{-3-3}{8}\\x=\frac{0}{8}\,and\, x=\frac{-6}{8}\\x=0\,and\, x=\frac{-3}{4}[/tex][/tex]

so, x= 0 and x=-3/4.

Answer:

A = 21.65 cm squared

Step-by-step explanation:

The basic area formula for a triangle is

[tex]A= \frac{1}{2}bh[/tex]

We have our base as 5, so we can find the height using right triangle trig.  Side BC is opposite the given angle, which is the height, and we are given side CD as 5 which is the base.  Using the tangent ratio to find side BC:

[tex]tan(60) = \frac{x}{5}[/tex] which simplifies to

5 tan(60) = x so

x = 8.66

Filling in for the area:

[tex]A= \frac{1}{2}(5)(8.66)[/tex] so

A = 21.65 cm squared

Answer:

60

Step-by-step explanation:

(This is not how teachers usually teach you)

First i divided 36 by 2 to get 30% = 18 then i multiplied 30% by 3.3333etc. to get 100% and i multiplied 18 by the same number (18*3.3333 = 60) and i got 60.

Answer:

Step-by-step explanation:

Givens

To find the regular price for tickets, we can use the rule of three.

If $36 represents 60%, how much would represents 100%?

[tex]x=100\% \frac{\$36}{60\%} = \$60[/tex]

Therefore, the cost of a regular price ticket is $60.

Answer: Estimates vary, but each person uses about 80-100 gallons of water per day

Explanation:

1. In order for the idea of "perpendicular distance" to make any sense in this context, the number of sides of the polygon must be even. Then the "diameter" is the diameter of the inscribed circle. As the number of sides increases, the polygon differs less and less from a circle, so the relationship of perimeter and "diameter" becomes closer to the relationship in a circle.

"As the number of sides in a regular polygon increases, the ratio of perimeter to diameter for that polygon approaches pi."

__

2. We know from the first question that ...

circumference/diameter = π

And we know that ...

diameter = 2·radius

Then the following are true:

A. circumference = π · diameter

B. circumference = (2·radius) · π

__

3. The expressions in order evaluate to approximately ...

4.0, 3.45, 3.31, 3.24

Of these, the last is closest to pi (3.14....). The appropriate choice is ...

D. (10·5)/15.4

__

4. Pi cannot be expressed as a rational number, because pi is irrational. A number of lengthy proofs have been offered to demonstrate this fact. One of them makes use of the fact that the tangent of any rational number is irrational, and the tangent of π/4 is 1. Since 1 is a rational number, π/4 cannot be, so π cannot be expressed as a rational number.

Answer:

4046.56 cm3

Step-by-step explanation:

The base is made by 5 isosceles triangles, with one side of 14 cm, and the opposite angle of [tex] \frac{360} 5 = 72° [/tex]. Each of the other angle is [tex]\frac{180-72} {2} =54°[/tex]. From there, you can calculate the height of each base triangle as in [tex]\frac {h} 7 = tan54[/tex] or 9.634...cm.

Your volume will be [tex]5 * \frac  {(14 * 9.634)} 2 * 12 = 4046.56 cm^3[/tex]

Answer:

[tex]y=\sqrt{x} -5[/tex]

Answer:

The function [tex]f(x)=\sqrt{x-5}[/tex]

Step-by-step explanation:

The Range of any function is complete set of all possible resulting values of the dependent variable , after substituting the domain.

so, the function [tex]f(x)=\sqrt{x-5}[/tex] has range [tex]f(x)$\geq$ -5[/tex]

This includes - 4 .

Hence, the function is [tex]f(x)=\sqrt{x-5}[/tex] .

Hm, it seems like his answer is off. The image is what I got.

Answers:

X+3

Step-by-step explanation:

I got it right

Answer:

V = 115.3 ft³

Step-by-step explanation:

The left part of the figure shows a cube of side length 4.2 ft.  The volume of a cube is V = s³, where s is the side length.  Hence, the volume of this particular cube is V = (4.2 ft)³ = 74.088.

The volume of a pyramid is V = (1/3)(base area)(height).

Here V = (1/3)(4.2 ft)²(7 ft) = 41.16 ft³.

Summing up the two distinct areas, we get V = 41.16 ft³ + 74.088 ft³, or

V = 115.3 ft³ after rounding up to the nearest tenth.

The volume of the composite figure is 115.2 cu.ft. , Option A is the correct answer.

Those figures that required x,y and z axis for their representation are three dimensional figures.

They have length , breadth and height.

All the object that we see around us can be categorized into Three Dimensional Figure.

In the given figure

It can be seen that it consists of a cube and a square pyramid

To determine the volume we have to determine the volume of each figure and then add

Volume of a cube =  side * side * side

Side of the cube = 4.2 ft.

Substituting the values

Volume of cube = 4.2 * 4.2 * 4.2

Volume of cube = 74.088 cu.ft

Volume of a square pyramid is given by

(1/3) * a² * h

a is the area of the base

area of the base =  area of the square = side * side

Area of the base = 4.2 * 4.2

Area of the base = 17.64 sq.ft

Height of the pyramid  = 7 ft.

Volume of  square pyramid = (1/3)* 17.64 *7

Volume of a square pyramid = 41.16 cu.ft

Total volume = 74.088 + 41.16

Total Volume = 115.2 cu.ft

Therefore , The volume of the composite figure is 115.2 cu.ft. , Option A is the correct answer.

To know more about Three Dimensional Figures

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Check the picture below.

so, the triangular prism is really 2 triangles and 3 rectangles stacked up to each other at the edges.  Let's simply get the area of each shape and sum them up, and that's the area of the prism.

[tex]\bf \stackrel{\textit{two triangles}}{2\left[ \cfrac{1}{2}(\stackrel{base}{6})(\stackrel{height}{5.2}) \right]}+\stackrel{\textit{right-side rectangle}}{(8\cdot 6)}+\stackrel{\textit{left-side rectangle}}{(8\cdot 6)}+\stackrel{\textit{base rectangle}}{(8\cdot 6)} \\\\\\ 31.2+48+48+48\implies 175.2[/tex]

Answer:

The surface area = 175.2 mm²

Step-by-step explanation:

Formula:-

Area of rectangle = lb

Area of triangle = bh/2

It is given a triangular prism.

To find the surface area

Surface area = 3 Rectangle area + 2 triangle area

Rectangle area = 3 * lb

 = 3 * 8 * 6

 = 144  mm²

Triangle area  = 2 * bh/2 = bh

  = 6 * 5.2 = 31.2²

Total area = 144 + 31.2 = 175.2 mm²