The frequency of the musical note C4 is about 261.63 Hz.
What is the frequency of the note a perfect fifth below C4?
130.82 Hz
174.42 Hz
256.63 Hz
392.44 Hz​

Answer:

She ran 5 laps

Step-by-step explanation:

Why? Because with each lap stating to be one and a half miles; you first and only step is to divide, seeing how each time you put 1 1/2 into the value of this 7 1/2 miles, you got a lap each time.

you divide 7 1/2 by 1 1/2,

this results in getting, 5

Answer: Erin ran 5 laps.

Step-by-step explanation

if he ran 7 1/2 miles and one lap is 1 1/2 miles then you need to add 1 1/2 miles up until you get the distance he ran which is 7 1/2 miles and when u keep adding 1 1/2 miles to get to 7 1/2 you get 5 laps. hope this helps :)

Answer:

$3,245

Step-by-step explanation:

For a money saved at Simple Interest,

Amount =Simple Interest+Principal

Principal, P=$2750

Rate, r=3%

Time, T=6 Years

[TeX] Simple \: Interest= \frac{Principal X Rate X Time}{100}[/TeX]

[TeX] = \frac{2750X 3 X 6}{100}[/TeX]=$495

Therefore, Amount in Erin's Account after 6 years =2750+495

=$3,245

Answer:

x = 50.5°

Step-by-step explanation:

∠ BDC and ∠ BDA are adjacent and supplementary, thus

∠ BDC = 180° - 78° = 102°

Calculate ∠ BCD using the Sine rule in Δ ABC, that is

[tex]\frac{5.6}{sinC}[/tex] = [tex]\frac{9.3}{sin50}[/tex] ( cross- multiply )

9.3 × sinC = 5.6 × sin50° ( divide both sides by 9.3 )

sinC = [tex]\frac{5.6sin50}{9.3}[/tex] ≈ 0.4613, thus

C = [tex]sin^{-1}[/tex] (0.4613 ) ≈ 27.5°

The sum of the 3 angles in Δ BCD = 180°, thus

x = 180° - (102 + 27.5)° = 180° - 129.5° = 50.5°

The angle x is also 52 degrees.

To find the measure of angle x in triangle ABC, we can use the fact that the sum of the angles in a triangle is always 180 degrees.

Given that angle A is 78 degrees and angle B is 50 degrees, we can find angle C using the following equation:

Angle C + Angle B + Angle A = 180 degrees

Angle C + 50 degrees + 78 degrees = 180 degrees

Now, subtract the known angles from 180 degrees to find the measure of angle C:

Angle C = 180 degrees - (50 degrees + 78 degrees)

Angle C = 180 degrees - 128 degrees

Angle C = 52 degrees

Now that we know angle C is 52 degrees, we can use the fact that the angles in a triangle add up to 180 degrees to find angle x:

Angle A + Angle B + Angle x = 180 degrees

78 degrees + 50 degrees + Angle x = 180 degrees

Now, subtract the known angles from 180 degrees to find angle x:

Angle x = 180 degrees - (78 degrees + 50 degrees)

Angle x = 180 degrees - 128 degrees

Angle x = 52 degrees

So, angle x is also 52 degrees.

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Answer:

3.14 cm squared

Step-by-step explanation:

First, identify the formula necessary to calculate the area of the circle.

Area of a circle = pi x r^2

Remember, the radius is just half of the diameter! Then to square a number, is to multiply it by itself once.

pi x 1^2 =?

pi x 1

Pi

The circumference of your circle is approximately 3.14 cm squared.

Answer:$4125

Step-by-step explanation:

Using the I = P x R x T formula, we can find the simple interest. Substitute all the values into this equation and you get : I = 10,000 x 13.75 x 3. Once you multiply all the values, $4125 is the answer you get. :)

Answer:

the movie is 2 hours and 10 min long

no it will not be over by 8:45pm

Step-by-step explanation:

if the movie begins at 3:45 pm and the next begins at 6:25pm with a half hour break you need to take 30 min from 6:25 to see what time the movie ended which is 5:55pm then you figure the time between 3:45pm and 5:55pm which is 2hours and 10 min.

since thw movie is starting 20 min late from 6:25pm that is now a start time of 6:45pm if the movie is 2hours and 10 min it will not be over by 8:45pm since that is only 2 hours

Answer:

x = -13/5 OR -2.6

Step-by-step explanation:

Take steps to isolate x:

-14 - 5 = -10x - 45

-19 = -10x -45

26 = -10x

x = 26/-10

x = -13/5 OR -2.6

Answer:X=-13/5 is the simplified answer

Step-by-step explanation:

-14-5=-10x-45

-19=-10x-45

-19+45=-10x-45(+45)

26=-10x

26/-10=x

x=-13/5

Answer:

blue marble is the right answer

Answer:

97

Step-by-step explanation:

83 and JKL form a straight line so they add to 180 degrees

83+ JKL = 180

Subtract 180 from each side

83-83+ JKL = 180-83

JKL = 97

Answer:

97°

Step-by-step explanation:

Interior + exterior angle = 180

Interior angle (JKL) = 180 - 83

97

Answer:

  250 minutes

Step-by-step explanation:

a) Assuming all taps flow at the same rate, the time is inversely proportional to the number of taps. Using 3/5 of the total taps will take 5/3 of the time required when all taps are used.

For 3 taps, the time is ...

  (5/3)(150 minutes) = 250 minutes

__

b) An assumption being made in my working is that all the taps are flowing at the same rate.

a) It will take 250 minutes to fill the pool using 3 taps.  B) The assumption being made here is that all the taps are flowing at the same rate r and that they are all turned on at the same time, working in parallel to fill the pool.

Let's denote the rate at which each tap fills the pool as r liters per minute.

With 5 taps working together, it takes 150 minutes to fill the pool. Therefore, the combined rate of 5 taps is [tex]\( \frac{1}{150} \)[/tex]  of the pool per minute. We can express this as:

[tex]\[ 5r = \frac{1}{150} \][/tex]

 Now, we want to find out how long it will take to fill the pool using only 3 taps.

The combined rate of 3 taps will be 3r.

To find the time t it takes for 3 taps to fill the pool, we set up the equation:

[tex]\[ 3r = \frac{1}{t} \][/tex]

We can solve for r using the first equation:

[tex]\[ r = \frac{1}{5 \times 150} \][/tex]

Substituting this value into the second equation gives us:

[tex]\[ 3 \times \frac{1}{5 \times 150} = \frac{1}{t} \][/tex]

Solving for t

[tex]\[ t = \frac{1}{3 \times \frac{1}{5 \times 150}} \][/tex]

t = 250

 So, it will take 250 minutes to fill the pool using 3 taps.

b) The assumption being made here is that all the taps are flowing at the same rate r and that they are all turned on at the same time, working in parallel to fill the pool.

This implies that the flow rate of each tap does not change regardless of how many taps are being used simultaneously, and that there are no other factors (like water pressure changes) affecting the flow rate when fewer taps are used.

Answer:

57

Step-by-step explanation:

the angles of a triangle together make 180 degrees.

using this, we can find the unknown angle is 115 degrees.

from here, we subtract 1 from both sides of 2d+1=115, then divide by 2, to get the d alone.

114/2=57

d=57

Answer:

d=57

Step-by-step explanation:

The sum of the interior angles of a triangle is 180 degrees

38 +27 +2d+1=180

Combine like terms

(38+27+1) +2d= 180

66+2d=180

Now, solve for d by isolating it

Subtract 66 from both sides

66-66 +2d=180-66

2d=114

Divide both sides by 2

d=57

Step-by-step explanation:

40° + 90° + 90° + angle ACB = 360°

220° + angle ACB = 360°

angle ACB = 360° - 220°

Therefore angle ACB = 140°

Hope it will help :))

Answer:

x = 0, π/3, π/2, 2π/3, π, 4π/3, 3π/2, 5π/3

Step-by-step explanation:

sin(2x) + sin(4x) = 0

Use double angle formula.

sin(2x) + 2 sin(2x) cos(2x) = 0

Factor.

sin(2x) (1 + 2 cos(2x)) = 0

Solve.

sin(2x) = 0, cos(2x) = -½

2x = 0, 2π/3, π, 4π/3, 2π, 8π/3, 3π, 10π/3

x = 0, π/3, π/2, 2π/3, π, 4π/3, 3π/2, 5π/3

Answer:

5.46 kilograms or 6.6 kilograms  

Step-by-step explanation:

Assume that 2 5 in your question has two possible meaning:

Let divide 9.1 kilograms into 5 equal part

=> 1 equal part =  9.1 / 5 = 1.82 kilograms  

Because 2/5 of this weight is apples, so the weight of apples accounted for 2 equal parts

=> the weight of apples is: 2*1.82 kilograms  = 3.64 kilograms

=>  the weight of pears is: 9.1 kilograms - 3.64 kilograms = 5.46 kilograms

Given the total weight is 9.1 kilograms

=>  the weight of pears is: 9.1 kilograms - 2.5 kilograms = 6.6 kilograms

Final answer:

To find the amount of pears sold, calculate two-fifths of the total weight for the apples and subtract this from the total weight. The farmer sold 5.46 kilograms of pears.

Explanation:

The student has asked a question that requires understanding of basic fractions and weight calculation in a real-life context, specifically within a farmer's market scenario. To solve the problem, we note that the total weight of apples and pears sold is 9.1 kilograms. If two-fifths (2/5) of this weight is apples, then to find the weight of pears, we first calculate the weight of apples and then subtract this from the total weight to get the weight of pears.

Step 1: Calculate the weight of apples by multiplying the total weight by the fraction that represents apples. This is 2/5 of 9.1 kg.

Step 2: Subtract the weight of the apples from the total weight to find the weight of pears.

Here are the calculations:

Weight of apples = (2/5) × 9.1 kg = 3.64 kg

Weight of pears = Total weight - Weight of apples = 9.1 kg - 3.64 kg = 5.46 kg

Therefore, the farmer sold 5.46 kilograms of pears at the farmer's market.

Answer:

11 tshirts would cost £106.15

Step-by-step explanation:

67.55 divided by 7 = 9.65

9.65 x 11 = 106.15

Therefore the total would be £106.15.

Answer: 106.15

Step-by-step explanation:

It will take Lin 12 seconds to finish her milkshake. The time it takes Diego to finish his milkshake cannot be determined without the rate at which he drinks.

The problem is about how long it will take for Diego and Lin to finish their milkshakes. Lin is drinking her milkshake at a rate of 1 ounce per second and began with a total of 12 ounces. Therefore, it will take her 12 seconds to finish. For Diego, it doesn't specify how quickly he is drinking his milkshake, which began with 20 ounces, it is impossible to calculate how long it would take him to finish his drink without this information. Hence, to fully solve this problem, you need additional rate information for Diego.

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Answer:

40 milimeters

Step-by-step explanation:

8*5=40

Answer:

The value of x is 16°

Step-by-step explanation:

Using the formula, angle = 1/2(θ°-x°) :

Let θ = 96°, x = x°, angle = 40°,

1/2×(96°-x°) = 40°

96° - x° = 80°

-x° = 80° - 96°

-x° = -16°

x = 16°

Final answer:

The area of the rectangular room with length 2 feet longer than the width can be expressed as w^2 + 2w square feet, where w represents the width of the room.

Explanation:

Barry needs to calculate the area of a rectangular room where the length is 2 feet longer than the width. If we denote the width as w, then the length will be w + 2 feet. The area of a rectangle is found by multiplying the length by the width.

Therefore, the expression for the area in terms of the width will be:

Area = width × length

Area = w × (w + 2 feet)

Area = w² + 2w square feet

This expression will give us the area of the rectangle in square feet.

About $70.31.

You would take $1968.00 and subtract $421.00 from it. Once you've subtracted, you would have gotten $1547.00. You would divide $1547.00 by the 22 people and get about $70.31 per person. :)

Answer:

PK represents a radius. Radius only goes half way of the circle.

Answer:

B) chord

Step-by-step explanation:

N and M are two points on the circumference and the segment MN doesn't pass through the centre, so it's a chord

Answer:

195¢

Step-by-step explanation:

1 inch of the wire costs

[tex]\frac{85}{17}[/tex] cents

So we just multiply by 39 to get the total cost.

[tex]\frac{85}{17} * 39 = 195[/tex]

Answer: 195 cents

Explanation:

17 inches cost 85 cent

Means 1-inch will cost 85/17 = 5 cents

At the same rate 39 inches will cost 39×5= 195 cents

Answer:

$990 per unit.

Step-by-step explanation:

The Unit Cost (C) and Unit Revenue R from the production and sale of x units are related by the function:

[tex]C=\dfrac{R^2}{220000} +3221[/tex]

We are required to find the rate of change of revenue per unit when the cost per unit is changing by $9 and the revenue is ​$1,000.

Rate of Change of C,

[tex]\dfrac{dC}{dt}=\dfrac{R}{110000} \dfrac{dR}{dt} \\\dfrac{dC}{dt}=\$9, R=\$1000\\9=\dfrac{1000}{110000} \dfrac{dR}{dt}\\\dfrac{dR}{dt}=9 \div \dfrac{1000}{110000}\\=9 X \dfrac{110000}{1000}\\\dfrac{dR}{dt}=\$990 $ per unit$[/tex]

The Revenue is changing at a rate of $990 per unit.

The problem is solved by first finding the derivative of the given equation to determine the rate of change. Given that the cost per unit is changing by $9, we substitute this in the derivative equation to get the revenue. Real-world applications of such problems help understand the concepts of marginal revenue and marginal cost.

As per the equation C = R2/220000 + 3221, we first need to find the derivative to determine the rate of change. So, C'(R) = 2R/220000 where C' represents the derivative of the cost with respect to revenue.

Given that the cost per unit is changing by $9, we can represent this as C' = 9 and solve for R using the derivative equation. Hence, R = sqrt(220000 * 9 / 2) = $1000. Therefore, the rate of change of revenue per unit when the cost per unit is changing by $9 and the revenue is ​$1,000 is found by substituting the revenue value into derivative equation.

These types of problems demonstrate how rates of change can be evaluated using calculus concepts in real-world applications such as understanding marginal revenue and marginal cost in economics and business studies.

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Given:

The diameter of the bicycle wheel is 27 inches.

We need to determine the circumference of the bicycle wheel.

Circumference of the bicycle wheel:

The circumference of the bicycle wheel can be determined using the formula,

[tex]C=\pi d[/tex]

where d is the diameter of the bicycle wheel.

Substituting d = 27 and π = 3.14, we have;

[tex]C=(3.14)(27)[/tex]

Multiplying, we get;

[tex]C=84.78 \ in[/tex]

Thus, the circumference of the bicycle wheel is 84.78 inches.

600 is the total number of pages in the book

percentage, a relative value indicating hundredth parts of any quantity.

Given,

Joshua is reading a book for history class.

He has read 180 pages so far.

This number represents 30% of the total number of pages in the book.

We need to find  total number of pages in the book.

Let x be the number of pages in the book.

30% of x=180

Convert 30% to decimal

30/100x=180

0.3x=180

Divide both sides by 0.3

x=600

Hence, 600 is the total number of pages in the book

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Answer:

[tex]\theta_{1} \approx 30.473^{\textdegree}[/tex]

[tex]\theta_{2} \approx 120.473^{\textdegree}[/tex]

[tex]\theta_{3} \approx 210.473^{\textdegree}[/tex]

[tex]\theta_{4}\approx 300.473^{\textdegree}[/tex]

Step-by-step explanation:

The equation needs to be rearranged in terms of one trigonometric function:

[tex]5\cdot \sin 2\theta - 9\cdot \cos 2\theta = 0[/tex]

[tex]5\cdot \tan 2\theta - 9 = 0[/tex]

[tex]5\cdot \tan 2\theta = 9[/tex]

[tex]\tan 2\theta = \frac{9}{5}[/tex]

[tex]\theta = \frac{1}{2}\cdot \tan^{-1} \left(\frac{9}{5} \right)[/tex]

The tangent function has positive values in the 1st and 3rd Quadrants. Then, the solutions are:

[tex]\theta_{1} \approx 30.473^{\textdegree}[/tex]

[tex]\theta_{2} \approx 120.473^{\textdegree}[/tex]

[tex]\theta_{3} \approx 210.473^{\textdegree}[/tex]

[tex]\theta_{4}\approx 300.473^{\textdegree}[/tex]

Answer:

1. Points scored

Step-by-step explanation:

A numerical data is defined as a data that is made up of numbers representing the quantity of a measurement. It is a measurable data such as weight or height, at it can be arranged in ascending or descending order as well as being able to provide an average.

The two types of numeric data are discrete and continuous data

A categorical data is made up of item labels, names or description, that are qualitative in their nature.

Information about a football team that is considered as numeric includes

1. Points scored

Which represents a quantifiable measurement that can be different with different teams and matches

2. Attendance this year.

48/6 = 8

He needs to buy 8 of the six pack size for a total of :

8 x 12.12 = $96.96

Or

48/ 4 = 12 Of the 4 packs for a total of

12 x 9.72 = $116.64

He would save

116.64 - 96.96 = $19.68 by buying 8 of the six packs.

Answer:

—————————————-

He saves $19.68

—————————————-

Hope this helps!!!!

—————————————-

Step-by-step explanation:

—————————————-

6 bottles for $12.12

Find the unit rate:

12.12/6

=2.02

This tells us that using this price, each bottle costs $2.02

—————————————-

4 bottles for $9.72

Find the unit rate:

9.72/4

=2.43

This tells us that using this price, each bottle costs $2.43

—————————————-

The first deal is better because you are paying less for each bottle.

—————————————-

So now you know which “deal to use,”

—the first one— (6 bottles for $12.12)

Since each bottle costs $2.02 here, you can multiply:

48 x $2.02 = $96.96

—————————————-

In the second deal, where 4 bottles cost 9.72 bucks,

Each bottle is for $2.43

48 x $2.43 = $116.64

—————————————-

How much does he save by going with the first deal?

$116.64 - $96.96 = $19.68

Answer: -4

Step-by-step explanation:

[tex]3x-7x=x\\-4x=-4x[/tex]

Answer:

The answer is -4x.

Step-by-step explanation:

You can just substract easily by writing 7-3 but remember to add negative to the final value as 3 is smaller than 7 and lastly, you only have to add x to the final answer.

Answer:

B is filling the tank most quickly

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

A, (7,2), the time goes slow, so it cannot be correct.

C, you can see is more lower than the other two. That means it is the slowest.

B, is going at a average rate, but faster than A and C. If you find a coordinate on B, for an example (2,2). 2 gallons in 2 minutes.