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3 years ago

The ratio of trumpet players to tuba players at a high school is 5 : 2

Mathematics

2 answers:

qaws [65]3 years ago

4 0

Answer2 is the answer

Serggg [28]3 years ago

4 0

Answer:

The answer is 2

Step-by-step explanation:

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The curves y = √x and y=(2-x) and the Cartesian axes form two distinct regions in the first quadrant. Find the volumes of rotati

makkiz [27]

Answer:

Step-by-step explanation:

If you graph there would be two different regions. The first one would be

$y = \sqrt{x} \,\,\,\,, 0\leq x \leq 1 \\$

And the second one would be

$y = 2-x \,\,\,\,\,, 1 \leq x \leq 2$ .

If you rotate the first region around the "y" axis you get that

$A_1 = 2\pi \int\limits_{0}^{1} x\sqrt{x} dx = \frac{4\pi}{5} = 2.51$

And if you rotate the second region around the "y" axis you get that

$A_2 = 2\pi \int\limits_{1}^{2} x(2-x) dx = \frac{4\pi}{3} = 4.188$

And the sum would be 2.51+4.188 = 6.698

If you revolve just the outer curve you get

If you rotate the first region around the x axis you get that

$A_1 =\pi \int\limits_{0}^{1} ( \sqrt{x})^2 dx = \frac{\pi}{2} = 1.5708$

And if you rotate the second region around the x axis you get that

$A_2 = \pi \int\limits_{1}^{2} (2-x)^2 dx = \frac{\pi}{3} = 1.0472$

And the sum would be 1.5708+1.0472 = 2.618

7 0

3 years ago

What is the value of x in the equation 1/3x-2/3=18<br><br> ? –56 –52 52 56

tangare [24]

I believe the answer is 56

6 0

2 years ago

Read 2 more answers

The diameter of the moon is about 3500 km. Approximate the surface area of the moon using the formula for the surface area of a

horrorfan [7]

Answer:

$3.8465 *10^7$ square kilometers

Step-by-step explanation:

The surface area of a sphere can be found using the formula $SA=4\pi r^2$ . Since the diameter is 3500 km then its radius is half of this. 3500 divided in two is 1,750 units. Substitute r=1,750.

$SA=4\pi r^2\\SA = 4 \pi (1750)^2\\SA = 4 \pi *3,062,500\\SA =38,465,000$

The surface area of the moon is about 38,465,000 square kilometers. Write this is scientific notation using base. $3.8465 *10^7$

5 0

2 years ago

Indicated operation of 2/3 + 3/8

stepladder [879]

Answer:

25/24

Step-by-step explanation:

Hope it Helps

8 0

2 years ago

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Pls help 9th grade math

loris [4]

Inequalities will have a <, >, <=, =>, = or will be worded as "Less than", "greater than", etc.

Equations must have mathematical functions and equal sign.

15=3x is an equation since 3x = 3*x

Finally, expressions are mathematical functions that have no equal signs.

8 0

2 years ago

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