# For which value of k does the system has no solutions?Equation:3x + y = 4kx + y = −2Answers:A: -3B: -2C: 3D: 4

The answer to this question is 4

Step-by-step explanation:

## Related Questions

A town interested in installing wind turbines to generate electricity measures the speed of the wind in the town over the course of a year. They find that most of the​ time, the wind speed is pretty​ slow, while only rarely does the wind blow very fast during a storm. What would be the best measure of the central wind speed they should report to the​ mayor? The mean​, because the distribution of wind speeds is skewed. The median​, because the distribution of wind speeds is symmetric. The mean​, because the distribution of wind speeds is symmetric. The median​, because the distribution of wind speeds is skewed. The proportion​, because the distribution of wind speeds is skewed. The proportion​, because the distribution of wind speeds is symmetric.

9514 1404 393

The median​, because the distribution of wind speeds is skewed.

Step-by-step explanation:

A few higher speeds will raise the mean. For a skewed distribution, the median may be a more appropriate measure of center.

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From an engineering point of view, one might have to consider speeds only within some range, as the wind turbines may be shut down for speeds too low or too high. Likely the power generated is not proportional to speed, so a weighted average (of the square of speed) would probably be more useful. Unfortunately, this question does not get into such subtleties.

Jarvis works in a garage for \$9 an hour. If he works on saturday he is paid time and a quarter. if he works on sunday he is paid time and three quarters. Last weekend jarvis worked for four hours on Saturday and four hours on Sunday. -How much was Jarvis paid last week all together?
-Hours paid Saturday=
-Hours paid Sunday=
-Total Hours paid=

Total Earned Saturday: \$45

Total Earned Sunday: \$63

Total: \$108

Step-by-step explanation:

Time and a quarter means that you divide his normal rate by 4 and add that to his normal rate:

9/4 = 2.25     2.25 + 9 = 11.25

Jarvis makes \$11.25 an hour on Saturdays. Since he worked 4 hours, you multiply 11.25 x 4 = 45.

Time and three quarters means that you multiply his normal rate by 3/4 and add that to his normal rate:

9x0.75 = 6.75     6.75 + 9 = 15.75

Jarvis makes \$15.75 an hour on Sundays. Since he worked 4 hours, you multiply 15.75 x 4 = 63.

To get the total, you add his earnings on Saturday and earnings on Sunday:

45 + 63 = 108.

I hope this helped you. If it did, please feel free to rate and press thanks! Have a splendid day.

72

Step-by-step explanation:

If he worked on saturday for four hours  he got 36 dollars and worked the same time on sunday he 36+36=72 dollars

Convert 1010101001 from binary to hexadecimal.

2A9

Step-by-step explanation:

A circle has a center (2, 4). prove that if the radius of the circle is less than 5, then the circle does not intersect the line y=x-6.

Draw a coordinate system, Draw a circle with radius 5 with center part (2,4). Now draw a line of y=x-6 with -6 being the y intercept and see what you get

A,B and C are the vertices of a triangle,A has coordinates (4,6)
B has coordinates (2,-2)
C has coordinates (-2,-4)
D is the midpoint of AB.
E is the midpoint of AC.
prove that DE is parallel to BC.

SSS (side, side, side)

SSS (side, side, side)

hope it helps:))!!!

Suppose that diameters of a new species of apple have a bell-shaped distribution with a mean of 7.45cm and a standard deviation of 0.4cm. Using the empirical rule, what percentage of the apples have diameters that are greater than 7.85cm? Please do not round your answer.

The percentage is 68.26%

Step-by-step explanation:

Before we use the empirical rule , we need to find the value of the z-score

Mathematically;

z-score = (x - mean)/SD

Thus;

z-score = (7.85 - 7.45)/0.4 = 0.4/0.4 = 1

So the percentage we want to calculate now is the percentage of values within 1 standard deviation of the mean

According to the empirical rule, 68.26% of values are within 1 standard deviation of the mean