Marcle is registering for her college classes Which cost 105 per unit. If each classes, can she take to have a maximum cost of 1,365?

Answer:

x = 8 and y = 10

Step-by-step explanation:

The given equations are :

2x -y  = 6 ....(1)

-9x + 3y = -42 ....(2)

Multiply eqation (1) by 3.

6x - 3y = 18 .....(3)

Adding equation (2) and (3).

-9x + 3y + 6x - 3y = -42 +18

-3x = -24

x = 8

Put the value of x in equation (1).

2(8) -y  = 6

16 - 6 = y

y = 10

Hence, the values of x and y are 8 and 10 respectively.

Answer:

4(x-5)=4(6-5)=4

2x/6=(2×6)/6=2

Answer:

The reflections of triangle's across the x - axis are  A and D

Given the equation of the line:

The slope-intercept form is: y = m * x + b

Where (m) is the slope

So, we will solve the given equation for (y)

so, the answer will be the slope-intercept form:

The drag factor of the road surface was 0.68.

The lengths of the skid marks were approximately 52.1 feet and 49.1 feet, respectively.

To solve this problem, we can use the following formula:

d = (v^2 / 2g) * f

Where:

First, we need to convert Andrea's speed from mph to feet per second:

45 mph = 66 feet per second

Next, we can use the average length of the skid marks to find the distance traveled during skid:

d = (60 feet + 54 feet) / 2

d = 57 feet

We also know that the efficiency of Andrea's brakes was 90%, which means that only 90% of the force applied to the brakes was actually used to slow down the car.

Therefore, we can adjust the initial velocity to take into account this reduction in braking power:

adjusted velocity = 66 feet per second * 0.9 = 59.4 feet per second

Substituting the values into the formula and solving for the drag factor:

57 feet = (59.4^2 / (2 * 32.2)) * f

f = 0.68

To find the lengths of each skid mark, we can use the formula:

d = (v^2 / 2g) * f

For the first skid mark:

60 feet = (v^2 / (2 * 32.2)) * 0.68

v = 52.1 feet per second

And for the second skid mark:

54 feet = (v^2 / (2 * 32.2)) * 0.68

v = 49.1 feet per second

Now we can use these velocities to find the lengths of each skid mark:

Length of first skid mark = 52.1 feet per second * 1 second

Length of first skid mark = 52.1 feet

Length of second skid mark = 49.1 feet per second * 1 second

Length of second skid mark = 49.1 feet

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Answer:

Approximately 16.67 liters concentration of the 6% solution and approximately 13.33 liters of the 15% solution are required to make 30 liters of a 10% solution.

Step-by-step explanation:

Let's denote the amount of the 6% solution as x liters and the amount of the 15% solution as y liters. We need to find the values of x and y that satisfy the conditions.

Since we want to make 30 liters of a 10% solution, we can set up the following equations:

Equation 1: x + y = 30 (total volume equation)

Equation 2: (0.06x + 0.15y) / 30 = 0.10 (concentration equation)

From Equation 1, we have x = 30 - y. Substituting this into Equation 2, we get:

(0.06(30 - y) + 0.15y) / 30 = 0.10

Simplifying the equation gives:

(1.8 - 0.06y + 0.15y) / 30 = 0.10

1.8 + 0.09y = 3

0.09y = 1.2

y ≈ 13.33

Substituting y back into Equation 1, we find:

x + 13.33 = 30

x ≈ 16.67

Therefore, approximately 16.67 liters of the 6% solution and approximately 13.33 liters of the 15% solution are required to make 30 liters of a 10% solution.

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i dont know what the answer is but all i can say is to read it closely and try asking your teacher and\or parents to help you understand

Answer: UR QUESTION HERE

Step-by-step explanation:

The following data shows the daily production of cell phones. 7, 10, 12, 15, 18, 19, 20. Mean The formula for finding the mean is: mean = (sum of observations) / (number of observations).

Therefore, the mean for the daily production of cell phones is: Mean = (7+10+12+15+18+19+20) / 7

= 101 / 7

Mean = 14.43

Variance The formula for finding the variance is: Variance = (sum of the squares of the deviations) / (number of observations - 1) Where the deviation of each observation from the mean is: deviation = observation - mean First, calculate the deviation for each observation:7 - 14.43

= -7.4310 - 14.43

= -4.4312 - 14.43

= -2.4315 - 14.43

= 0.5718 - 14.43

= 3.5719 - 14.43

= 4.5720 - 14.43

= 5.57

Now, square each of these deviations: 56.25, 19.62, 5.91, 0.33, 12.75, 20.9, 30.96 The sum of these squares of deviations is: 56.25 + 19.62 + 5.91 + 0.33 + 12.75 + 20.9 + 30.96

= 147.72

Therefore, the variance for the daily production of cell phones is: Variance = 147.72 / (7-1) = 24.62 Standard deviation ) Mean = 14.43b) Variance per Day = 24.62c) Standard Deviation = 4.96

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The common difference of the arithmetic sequence is d = 3.

What is an Arithmetic sequence?

An arithmetic progression, also referred to as an arithmetic sequence, is a set of numbers where each term following the first is derived by adding a fixed constant number to the term before it.

To solve this problem, we can use the formula for the nth term of an arithmetic sequence. The formula is as follows:

an = a1 + (n - 1)d

Where an is the sequence's nth term, a1 is the first term, d is a common difference, and n is the number of terms we want to discover:

We know that a1 = 10 and a4 = 19. By entering these numbers into the formula, we obtain:

          a4 = a1 + (4 - 1)d

          19 = 10 + 3d

In order to find d, we can divide by 3 after subtracting 10 from both sides:

          9 = 3d

          d = 3

Therefore, the common difference of the arithmetic sequence is d = 3.

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Question 3: By default, Tableau considers categorical data to be dimensions and quantitative data to be measures. True or False?

Answer: True

Tableau is a powerful data visualization software that allows users to explore, analyze and visualize data from various sources. In Tableau, data is classified into two categories: dimensions and measures. Dimensions are categorical variables that describe the data, such as names, dates, regions, and product categories. Measures are quantitative variables that represent the data's numerical values, such as revenue, profit, and quantity. By default, Tableau considers categorical data to be dimensions and quantitative data to be measures, but you can also change this setting in Tableau according to your needs.

Question 4: In Tableau, green pills represent measures and blue pills represent dimensions. True or False?Answer: FalseExplanation:In Tableau, green pills represent dimensions, and blue pills represent measures. Dimensions are discrete fields used to categorize, group, or filter data, while measures are continuous fields that are used to perform mathematical operations, such as sum, average, minimum, maximum, and count. You can drag a dimension or measure field from the Data pane to the Rows or Columns shelf in Tableau to create a view. Green pills can be used to add dimensions to the view, while blue pills can be used to add measures to the view.

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Given,x(t) = 7.4t² − 4.8t³m

We need to find the following.(b) Velocity (in m/s) and acceleration (in m/s²) at t = 2 s and indicate the direction with the sign of your answer.

(c) Find the time t > 0 (in s) when the position is at a maximum.

(d) Find the time t > 0 (in s) when the velocity is zero.

(e) Find the maximum position (in m) for time t > 0 and indicate the direction with the sign of your answer.

To calculate velocity, we need to differentiate position with respect to time.

That is,

v(t) = x′(t)

= 14.8t - 14.4t²m/s

We can calculate acceleration by differentiating velocity with respect to time.

That is,

a(t) = v′(t) = 14.8 - 28.8t m/s²

Now, we can substitute t = 2 s to find velocity and acceleration.

v(2.0 s) = 14.8(2.0) - 14.4(2.0)² = 4.4 m/s (The direction is positive because velocity is positive at t = 2 s) a(2.0 s) = 14.8 - 28.8(2.0) = -42.8 m/s²

(The direction is negative because acceleration is negative at t = 2 s)

Now, we can find the time when the position is at a maximum.

To find the maximum, we need to differentiate position with respect to time and equate it to zero.

dx/dt = 14.8t - 14.4t²

= 0.

Simplifying, we get 14.8t(1 - t) = 0.

Hence,t = 0, 1 s.To determine the time when velocity is zero, we set the expression for velocity to zero and solve for t.

v(t) = 0 = 14.8t - 14.4t² => 14.8t = 14.4t² => t(14.4t - 14.8) = 0.

Hence,t = 0, 1.028 s (rounded to three decimal places).

To find the maximum position, we substitute t = 1 s into the expression for position.

x(1.0 s) = 7.4(1.0)² − 4.8(1.0)³

= 2.6 m.

(The direction is positive because the particle is moving in the positive direction).

Therefore, the answers are,v(2.0 s) = 4.4 m/s (positive direction)a(2.0 s) = -42.8 m/s² (negative direction)t = 1 st = 0, 1.028 sx = 2.6 m (positive direction).

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x = 26.75 min

26 minutes, would = 3.51. if you add .12 to that it is 3.63.

so the most that she could talk would be 26 minutes.

The single transformation which this student performed include the following: a reflection over the y-axis.

In Geometry, a reflection over or across the y-axis or line x = 0 is represented and modeled by this transformation rule (x, y) → (-x, y).

By applying a reflection over the y-axis to the coordinate of the given triangle PQR, we have the following coordinates:

(x, y)                             →                 (-x, y).

Coordinate P = (-1, 1)   →  Coordinate J' = (-(-1), 1) = (1, 1).

Coordinate Q = (-4, 1)   →  Coordinate K' = (-(-4), 1) = (4, 1).

Coordinate R = (-4, 4)   →  Coordinate L' = (-(-4), 4) = (4, 4).

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The amount that Susan actually have to pay should be considered as the $1,332.

Since the purchase price of the computer is $1,200

And, the sales tax rate is 11%

So here the total amount be like

= $1,200 + 11% of $1,200

= $1,200 + $132

= $1,332

hence, The amount that Susan actually have to pay should be considered as the $1,332.

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Answer: A

Step-by-step explanation: A shows a turkey sandwich with all the types of bread and a ham sandwich with all the types of bread.

Answer:

Calories are transferred to flea beetle = 150 Calories

Calories are transferred to the sparrow = 15 Calories

Step-by-step explanation:

Given:

Calories in grass = 1,500 Calories

Find:

Calories are transferred to flea beetle

Calories are transferred to the sparrow

Computation:

According to food chain level only 10 % of Calorie transferred to the next level.

So,

Calories are transferred to flea beetle = 10% (Calories in grass)

Calories are transferred to flea beetle = 10% (1,500)

Calories are transferred to flea beetle = 150 Calories

Calories are transferred to the sparrow = 10% (Calories are transferred to flea beetle)

Calories are transferred to the sparrow = 10% (150)

Calories are transferred to the sparrow = 15 Calories

Answer:22

Step-by-step explanation:

tell me if you want the explanation in the comments

Answer:

22

Step-by-step explanation:

If the total is 33 games ,33 divided in 3 parts,each part is 11

Of the 3 parts  the team won 2 parts

 so 2x11 = 22

By increasing the sample size to 248, the researcher can be more confident in their estimate of the mean drying time for the type of cement being studied.

To determine the sample size required to estimate the mean drying time for a certain type of cement, the following formula can be used:

\(n = ((Zα/2 \times σ) / E)^2\) where: Zα/2 is the critical value of the standard normal distribution for the desired confidence level (99% in this case), which is 2.576 σ is the standard deviation of the population (68 minutes)E is the maximum margin of error that can be tolerated (7 minutes).

Substituting these values into the formula, we get:

\(n = ((2.576 \times 68) / 7)^2\) = 247.36. Rounding up to the nearest whole number, the sample size required is 248.

This means that if the researcher takes a random sample of 248 drying times and calculates the mean drying time, with 99% confidence we can say that the true population mean drying time is within plus or minus 7 minutes of the sample mean.

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The first error Jayden made in teh proof is: D. the sine ratio, sin(X) = h/x is incorrect, its should be sin(Z) = h/x.

Whn solving a right triangle, the sine ratio can be used which is expressed as, sin ∅ = opposite side/hypotenuse, given that ∅ is the refrence angle.

In the proof of Jayden, the area of the triangle is correct, which is 1/2(base × height).

However, the sine ratio is wrong.

Therefore, the first error Jayden made in teh proof is: D. the sine ratio, sin(X) = h/x is incorrect, its should be sin(Z) = h/x.

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Answer:

Step-by-step explanation:

The first error Jayden made in teh proof is: D. the sine ratio, sin(X) = h/x is incorrect, its should be sin(Z) = h/x.

What is the Sine Ratio?

Whn solving a right triangle, the sine ratio can be used which is expressed as, sin ∅ = opposite side/hypotenuse, given that ∅ is the refrence angle.

In the proof of Jayden, the area of the triangle is correct, which is 1/2(base × height).

However, the sine ratio is wrong.

Therefore, the first error Jayden made in teh proof is: D. the sine ratio, sin(X) = h/x is incorrect, its should be sin(Z) = h/x.

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A period is the difference in x over which a sine function returns to its equivalent state and the amplitude is A/5.

Amplitude:

The amplitude of a periodic variable is a measure of its change over a period of time, such as a temporal or spatial period. The amplitude of an aperiodic signal is its magnitude compared to a reference value. There are various definitions (see below) of amplitude, which is any function of the magnitude of the difference between the extreme values ​​of a variable. In the previous text, the phase of a periodic function is called the amplitude.

                       X = A sin (ω[ t - K]) + b

A is the amplitude (or peak amplitude),

x is the oscillating variable,

ω  is angular frequency,

t is time,

K and b are arbitrary constants representing time and displacement respectively.

According to the Question:

An equation does not have an amplitude. This "equation" represents the formula of a vibration, and was better written as:

X= A/5* sin(1000.t + 120)

These oscillations have a certain amplitude. X values ​​can vary from minimum to maximum. Normally, the stop position of the oscillation is X=0. In this case, we can see that the maximum occurs when the sine is +1 and the minimum occurs when the sine is -1.

For theses cases X= A/5 respectively -A/5.

Therefore,

The amplitude is A/5.

For formulas of this type, the term in front of the sinus (or cosine) is equal to the amplitude.

Complete question:

Can I find the amplitude of this equation? A/5 *