Ask question

Ask question

All categories

3 years ago

14

sam's music teacher told him to practice his trombone for X amount of hours. he spent X amount of hours practicing did he practi

ce long enough?

1 answer:

Crank3 years ago

4 0

Yes if he practices X amount of hours and is told to practice X amount of hours than he practiced long enough

You might be interested in

The numbers of birds Jim spots on different days during a

irina [24]

D.) 06.5. 20 words don’t mind these i just don’t know what else to say besides it’s D

8 0

3 years ago

Read 2 more answers

Althea paid $5.00 each for two bracelets and later sold each for $15.00. She paid $8.00 each for three bracelets

____ [38]

Answer:

I have the same question

Step-by-step explanation:

message me if anyone helps I need it too

8 0

3 years ago

What is the average (arithmetic mean) of the first 90 measurements in a certain list of 92 measurements? (1) the average of the

marishachu [46]

The sum of all the measurements is just the average times the number.

$\bar x = \frac{1}{n} \sum_{i=1}^n x_i$

$\sum_{i=1}^n x_i = n \bar x$

So if the average of all 92 is 7 the sum of those is $92 \times 7$

The average of the last two is 7.2 so their sum is $2 \times 7.2$

That means the sum of the first 90 is $92 \times 7 - 2 \times 7.2$

so the average of the first 90 is

$\dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556$ cm

7 0

3 years ago

If CP of an item is Rs 7000, If SP of item is Rs 9100 Find the profit percentage.

Mama L [17]

Step-by-step explanation:

please mark me as brainlest

5 0

2 years ago

If f(x)=ln(sin(2x)), f''(π/4) is equal to

Licemer1 [7]

Use the chain rule to compute the second derivative:

$f(x)=\ln(\sin(2x))$

The first derivative is

$f'(x)=(\ln(\sin(2x)))'=\dfrac{(\sin(2x))'}{\sin(2x)}=\dfrac{\cos(2x)(2x)'}{\sin(2x)}=\dfrac{2\cos(2x)}{\sin(2x)}$

$f'(x)=2\cot(2x)$

Then the second derivative is

$f''(x)=(2\cot(2x))'=-2\csc^2(2x)(2x)'$

$f''(x)=-4\csc^2(2x)$

Then plug in π/4 for <em>x</em> :

$f''\left(\dfrac\pi4\right)=-4\csc^2\left(\dfrac{2\pi}4\right)=-4$

4 0

3 years ago