Nathan practices the piano 1316 minutes in 4 weeks. At what rate did she practice, in minutes per day?​

Answer: -12

Step-by-step explanation:

Answer:

No solution

Step-by-step explanation:

The given equation simplifies to:

5x - 15 = -15 + 10(x + 3) - 5x, or

5x        =  10x + 30 - 5x, or

10x        =  10x + 30   NO SOLUTION!

Answer:

62.17 days

Step-by-step explanation:

The computation of the number of days  is shown below:

Given that

A(t)=10 × 0.5^(t ÷ 18.72)

1 = 10 × 0.5 ^ (t ÷ 18.72)

0.1 = 0.5 ^ (t ÷ 18.72)

Now consider the log in both sides

ln(0.1) = ln(0.5)^ (t ÷ 18.72)

ln(0.1)  ÷  ln(0.5) = (t ÷ 18.72)

3.321928095  = (t ÷ 18.72)

So, t = 62.17 days

With the help of log, we can easily compute it

In the above case, the possible point system will be:

1st choice vote: 4 points

2nd choice vote: 2 points

In arranging for the turtle to win in this point framework, the point values relegated for 1st choice and 2nd choice votes have to be meet the taking after criteria:

Lets say:

1st choice vote: 4 points

2nd choice vote: 2 points

Thus by the use of these point values, the turtle would have the next chance of winning since 1st choice votes would be worth more point (4 point ) compared to 2nd choice votes (3 point ). This would push individuals to select the turtle as their 1st choice, because it would allow the turtle a better add up to point gains and increase its chances of winning.

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A = 120/2

B=120/4

Car A traveled 60 miles per hour

car B traveled 30 miles per hour

Answer:

car A traveled 60 miles per hour

car B traveled 30 miles per hour

Step-by-step explanation:

I did 2/120 for car A and got 60

then I sid 4/120 for car B and got 30

Answer:

y = -1

x = -1

Step-by-step explanation:

Answer:

8

Step-by-step explanation:

When you add it together, you get 8.

Answer:

2 - bedroom apartment = 4

3 - bedroom apartment = 2

Step-by-step explanation:

Given the following :

2 - bedroom apartment = $700 / month

3 - bedroom apartment = $900 / month

Last month:

Number of vacant apartment = 6

Amount of Lost rent = $4600

Let a = 2 - bedroom apartment and b = 3 - bedroom apartment

Vacant apartment :

a + b = 6 - - - (1)

Lost rent :

700a + 900b = 4600 - - - (2)

From (1),, a = 6 - b

Substitute a = 6 - b into (2)

700(6 - b) + 900b = 4600

4200 - 700b + 900b = 4600

4200 + 200b = 4600

200b = 4600 - 4200

200b = 400

b = 400/200

b = 2

From (1) ;

a + b = 6

a + 2 = 6

a = 6 - 2

a = 4

a = 2 - bedroom apartment = 4

b = 3 - bedroom apartment = 2

Answer:

62.73 or 62.7

*in the future you could use desmos to help you :)

Answer:

Slope of dotted lines: 3/1 or 3

Slope of reflected line: 1/3

Step-by-step explanation:

Rise and run

a. null hypothesis \(H_0\): PRmean=non-PRmean

b. the sample mean lies in the interval, so we fail to reject null hypothesis

c. critical value z(0.05)=1.96 is less than calculated z=3.56 so we fail to accept null hypothesis.

A null hypothesis states that there is no statistical significance to be discovered in the set of presented observations. The validity of a theory is assessed through hypothesis testing on sample data. Sometimes known as the "null," it is represented by the symbol  \(H_0\).

(a)

null hypothesis  \(H_0\): PRmean=non-PRmean

(b).

i. \((1-\alpha)\times 100\%\) confidence interval for sample

\(mean=mean \pm z(\frac{\alpha }{2} )*SE(mean)\)

95% confidence interval for sample PRmean=PRmean±z(.05/2)*SE(mean)=69.5±1.96*1.9

=69.5±3.724=(65.776,73.224)

95% confidence interval for sample non-PRmean=non-PRmean±z(.05/2)*SE(mean)=61.2±1.96*1.7

=69.5±3.332=(57.868, 64.532)

ii. null hypothesis not be rejected

iii. since the sample mean lies in the interval, so we fail to reject null hypothesis

(c).

i. mean difference=69.5-61.5=8

ii. SE(difference)=\(\sqrt{SE(PR)^2+SE(non-PR)^2}\)

\(=\sqrt{1.9\times 1.9+1.2\times 1.2}\)

=2.2472

iii. we use z-test and z=(mean difference)/SE(difference)=8/2.2472=3.56

iv. here level of significance alpha is not mentioned,

let \(\alpha\) =0.05

critical value z(0.05)=1.96 is less than calculated z=3.56 so we fail to accept null hypothesis.

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The required correct option is d. He need to plug back into one of the equations to find x.

synchronous equations, system of equations Two or more equations in algebra must be handled jointly (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a singular answer. A answer is not assured even then.

We have

3x + 6y = 12

x + 5y = 10

In then given question, Joey has to solve the system of equations using substitution.And find the value of y.

In next, he must need to find the value x so that he can make ordered pairs of x and y values.

So, He need to plug back into one of the equations to find x. Option is correct.

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Given data for a company's costs versus its profits:

x g(x)

−2 2

−1 −3

0 2

1 17

We need to determine which of the following statements is true for this function:

A) The function is decreasing from x = −2 to x = 1.

B) The function is decreasing from x = −1 to x = 0.

C) The function is increasing from x = 0 to x = 1.

To determine the function's behaviour over the domain, we can observe the changes in the y-values as we move from left to right along the x-axis.

Looking at the given data:

From x = −2 to x = 1, the y-values change from 2 to 17, which indicates an increasing function.

From x = −1 to x = 0, the y-values change from −3 to 2, which also indicates an increasing function.

From x = 0 to x = 1, the y-values change from 2 to 17, again indicating an increasing function.

Therefore, the statement "The function is increasing from x = 0 to x = 1" is a true statement for this function. Thus, option C is correct.

To summarize:

Option A is incorrect because the function is increasing from x = −2 to x = 1.

Option B is incorrect because the function is increasing from x = −1 to x = 0.

Option C is correct because the function is indeed increasing from x = 0 to x = 1.

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Answer:

B

Step-by-step explanation:

The answer to the equation is 5.333333333, so I rounded it to 5 1/3

Answer:

B. \(5\frac{1}{3}\)

Step-by-step explanation:

\(9\frac{7}{12}-4\frac{3}{12}\)

Because they already have the same denominator you can subtract right away,

First, subtract the whole numbers,

Whole numbers: 9 and 4

9 - 4 = 5

5 is your new whole number,

You can already mark off answer A because it has a 6 for the whole number,

Now subtract the fractions,

(You cannot subtract the denominators! For the denominators stay the same!)

\(\frac{7}{12} -\frac{3}{12}=\frac{4}{12}\)

Simplify \(\frac{4}{12}\):

\(\frac{4}{12} =\frac{2}{6} =\frac{1}{3}\)

One-third is the lowest it can be simplifyed,

Therefore the answer is \(5\frac{1}{3}\), option ⇒ B.

Answer:

y = 5

x = 5

Step-by-step explanation:

find the complete question in the attached image

the angle opposite 5y is also 5y. this is because alternate angles are equal

180 = 155 + 5y

5y = 180 - 155

5y = 25

y = 5

the sum of 5y and 13x is equal to 90

this is because the sum of angle on a straight line is equal to 180 and one of the angle on the straight line is already equal to 90 . so, 90 (180 - 90)

5y + 13x = 90

25 + 13x = 90

13x = 90 - 25

13x = 65

x = 5

Tan(3/4 + 7) has the same value as the inverse of tan(3/4), which is -1.

Mathematics' trigonometric functions relate the angles and sides of a right triangle.

The fundamental trigonometric operations are:

Sine (sin) is the ratio of a side's length to an angle's length relative to the hypotenuse of a triangle.

The ratio of the length of the side next to an angle to the length of the triangle's hypotenuse is known as the sine function.

Tangent (tan) is the ratio of the side length next to an angle to the side length next to the angle.

By noting that the addition of two to any angle has no effect on its tangent value, we can simplify the argument for tan(3/4 + 7). Thus, we can reformat:

Tan(3/4 + 7) is equivalent to Tan(3/4 + 2 + 2 + 2 + ) and Tan(3/4 + ).

In the third quadrant of the unit circle, where the tangent function is negative and the absolute value of the tangent is 1, the angle 3/4 + is located. Therefore, tan(3/4 + ) has a value of -1.

In conclusion, the value of f tan(3/4 + 7) and the value of f tan(3/4), which is -1, are identical. An angle's tangent value is unaffected by the addition of any multiple of 2, only its position within the unit circle.

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Answer:

12x + 3y

Step-by-step explanation:

Not sure what the blanks are, but here is what I did

8x + y + 4x + 2y

(combine like terms)

8x + 4x + 3y

(combine like terms)

12x + 3y

In 1940, John Atanasoff, a physicist from Iowa State University, wanted to solve a 29 x 29 linear system of equations. To solve this system using Gaussian elimination, it would have required approximately 29^3/3 = 24389 arithmetic operations.

In 1940, John Atanasoff developed the Atanasoff-Berry Computer (ABC), which was the first electronic computer. Atanasoff wanted to use the ABC to solve a 29 x 29 linear system of equations.

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False. While it is true that forecasts can be subject to uncertainties and may not always be entirely accurate, it is not necessarily most appropriate to use the standard deviation of demand as the primary measure of uncertainty.

The standard deviation represents the dispersion of data points around the mean, and it is commonly used to measure variability within a dataset. However, it may not capture all the sources of uncertainty in demand forecasting.

Forecasts consider various factors such as historical data, market trends, customer behavior, and external influences to estimate future demand. Although they may not be entirely precise, they provide valuable insights and help organizations make informed decisions regarding production, inventory management, and resource allocation.

In addition to the standard deviation, other measures of uncertainty, such as confidence intervals or prediction intervals, can be used to quantify the range of possible outcomes and the associated level of uncertainty. These measures provide a more comprehensive understanding of the potential variations in demand, considering the inherent uncertainties in forecasting.

In conclusion, while forecasts may not always be completely accurate, they provide useful guidance for decision-making. The standard deviation of demand alone may not adequately capture the full range of uncertainties, and it is important to consider other measures of uncertainty when assessing the reliability and potential variations in demand forecasts.

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Answer:

The slope is 1/3 and the y intercept is 6

Step-by-step explanation:

The slope intercept form of a line is

y = mx+b where m is the slope and b is the y intercept

3y -x =18

Add x to each side

3y = x+18

Divide each side by 3

3y/3 = x/3 +18/3

y = 1/3x +6

The slope is 1/3 and the y intercept is 6

We need to solve for y (y = mx + b):

3y - x = 18

~Add x to both sides

3y = 18 + x

~Divide 3 to everything

y = 6 + x/3 or y = 6 + 1/3/x

So... 1/3 is the slope and 6 is the y-intercept.

Best of Luck!

Answer:

I think the answer is B

Hope This helps! :) Plz Give Brainliest if this is right!

There are a total (4) 2⁸ = 256 possible methods to join 8 bits or 8 binary digits.

A binary code uses a two-symbol system to represent text, computer processor instructions, or any other data.

The binary number system's "0" and "1" are frequently employed as the two symbols in this system.

Each character, command, etc. is given a set of binary digits, often referred to as bits, by the binary code.

A binary string of eight bits (also known as a byte) can, for instance, represent any of 256 possible values and hence a vast range of distinct things.

8 bits, or 8 binary digits, can be combined in 2⁸=256 different ways.

Some of these combinations are shown in the following table.

(The number in parentheses is the equivalent in decimal form.)

Therefore, there are a total (4) 2⁸ = 256 possible methods to join 8 bits or 8 binary digits.

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\( \purple{ \huge{ \tt{ \: ✨ Answer ✨ \: }}}\)

\(The \: \: answer \: \: is \: \: \red{ \boxed{ \boxed{ \huge{ \tt{ \: c. \: \frac{2}{7} \: \: }}}} }\)

This value is approximate because pi = 22/7 is approximate.

===========================================================

Explanation:

Let's find the perimeter of the wheel, aka the circumference

C = pi*d

C = (22/7)*77

C = 242

The distance around the tire is approximately 242 cm

At first glance, it looks like one revolution will do the trick. However, we need to cover 242 meters and not 242 cm.

We can say the following

1 meter = 100 cm

242 meters = 24200 cm .... multiply both sides by 242

One revolution covers 242 cm, which is 1/100 of the distance we need to cover. So that means we need to do 100 revolutions to get to the target we're after.

1 revolution = 242 cm

100 revolutions = 24200 cm ... multiply both sides by 100

---------------------------

We could also use a proportion to solve

(1 revolution)/(242 cm) = (x revolutions)/(24200 cm)

1/242 = x/24200

1*24200 = 242x

242x = 24200

x = 24200/242

x = 100

Answer:

--------------------

The experimental probability is the ratio of actual outcomes and total outcomes:

The proportion of those surveyed who chose basketball as their favorite sport is 34.149 (option a)

Let's denote the proportion of adults who chose basketball as their favorite sport as P(Basketball). To calculate P(Basketball), we need to divide the total number of adults who chose basketball by the total number of surveyed adults. Mathematically, it can be represented as:

P(Basketball) = (Number of adults who chose basketball) / (Total number of surveyed adults)

To calculate the number of adults who chose basketball, we sum up the values from the age range categories:

Number of adults who chose basketball = Number of adults (18-30) who chose basketball + Number of adults (31-50) who chose basketball + Number of adults (51 and above) who chose basketball

Looking at the table, we find that the number of adults (18-30) who chose basketball is 15, the number of adults (31-50) who chose basketball is 8, and the number of adults (51 and above) who chose basketball is 11. Adding these values together, we get:

Number of adults who chose basketball = 15 + 8 + 11 = 34

Now, let's calculate the total number of surveyed adults. We can sum up the values from the age range categories:

Total number of surveyed adults = Total number of adults (18-30) + Total number of adults (31-50) + Total number of adults (51 and above)

From the table, we find that the total number of adults (18-30) is 49, the total number of adults (31-50) is 48, and the total number of adults (51 and above) is 52. Adding these values together, we get:

Total number of surveyed adults = 49 + 48 + 52 = 149

Now, we have the values we need to calculate the proportion:

P(Basketball) = (Number of adults who chose basketball) / (Total number of surveyed adults)

= 34 / 149

Hence the correct option is (a).

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The correct solution are,

(C) a=1, b=2, c=3.

The code segment does not work in the case where a > b, c > b, but a < c.

In this case, the value of 'low' is set to 'b' instead of 'a', which causes the code segment to print the incorrect value.

The values of a, b, and c that fall into this case are a=1, b=2, and c=3.

Let's trace through the code segment using a=1, b=2, and c=3:

Since a=1 and b=2, the first conditional statement (a > b && b > c) evaluates to false, so we skip the first 'if' block.

Since a=1 and c=3, the second conditional statement (a > b && c > b) evaluates to true, so we set 'low' to 'b'.

However, since we have an 'else' block following the second conditional statement, it will always be executed. So, 'low' is set to 'a' instead.

Finally, the code segment prints the sum of a + b + c - low, which is 1+2+3-1 = 5, which is incorrect.

The correct answer should be 1 + 3 = 4.

Therefore, the answer is (C) a=1, b=2, c=3.

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Answer:

A and C

Step-by-step explanation:

A. 3+4=7

B. 3/9≠3. It equals 1/3

C. 5-3=2

D. 8(3)≠32. It equals 24

E. 3-10≠7. It equals -7