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3 years ago

(a) for what values of k does the function y = cos(kt) satisfy the differential equation 16y'' = −81y?

Mathematics

1 answer:

sesenic [268]3 years ago

3 0

Try this offered solution.Answer: 3/2

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For a segment of a radio show , a disc jockey can play 7 records . If there are 9 records to select from , in how many ways can

ale4655 [162]

Answer: 72

Step-by-step explanation:

From the question, we are informed that a disc jockey can play 7 records and that there are 9 records to select from for a particular segment of a radio show.

The number of ways that the program for the segment be arranged will be:

= 9! / 7!

= (9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1) / (7 × 6 × 5 × 4 × 3 × 2 × 1)

= 9 × 8

= 72

6 0

3 years ago

-4.2x 31.5=165.1 solve

Ymorist [56]

Answer:

x = −1.24

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−132.3x=165.1

Step 2: Divide both sides by -132.3.

$\frac{-132.3x}{-132.3} = \frac{165.1}{-132.3} \\$

x= -1.247921

6 0

2 years ago

Mark drew Two lines that form a right angle.what words describe the lines that mark drew.

dmitriy555 [2]

Mark drew Two lines that form a right angle.what words describe the lines that mark drew.

Mark drew perpendicular lines

7 0

3 years ago

Which is the best estimate of the correlation coefficient for the scatter plot?

olga55 [171]

Answer:

The best estimate of the correlation coefficient is 0.9 from the given data.

Step-by-step explanation:

From the scatter plot, the line of best fit will have a positive slope.

So, the correlation coefficient , $\rho$ is greater than 0.

so, $\rho$ ≠ - 0.9

Also, there is a deviation from absolute linearity.

So, $\rho$ ≠ 1

Again from the scatter plot it is closer to linearity than further.

Hence, $\rho$ ≠ 0.3 .

So $\rho$ = 0.9

6 0

3 years ago

NEED HELP ASAP. I don not understand why I'm wrong. What is the right answer???

hammer [34]

Answer:

Answer: 35/18

Step-by-step explanation:

$\frac{ \{ \frac{3}{4} - \frac{5}{2} \} }{ \{ \frac{3}{5} - \frac{3}{2} \}} = \frac{( - \frac{7}{4} )}{ (- \frac{9}{10} )} \\ \\ = \frac{7}{4} \div \frac{9}{10}$

use the reciprocal of 9/10 :

$= \frac{7}{4} \times \frac{10}{9} \\ \\ = \frac{35}{18}$

6 0

2 years ago

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