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4 years ago

Which of these is it ?..

Mathematics

1 answer:

sveta [45]4 years ago

4 0

Answer:

D) all of the above

Step-by-step explanation:

If a line bisects another line, that means the length of the lines are equal

The lines are perpendicular because angle APR is 90 degrees

If the lines are perpendicular, then angle RPB is 90 degrees

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460 is what percent of 808

Reil [10]

All u have to do is subtract 460 from 808

6 0

3 years ago

A model of a submarine has a length of 6.6 meters. Use the scale 1:35 to find the length

kirill115 [55]

The scale 1:35 indicates that for every 1 meter on the scale model, there are really 35 meters in real life.

So if the scale model is 6.6 meters, you would do 35 * 6.6 to find the length in real life, which is 231 meters.

The answer is 231 meters.

7 0

3 years ago

A baker made 60 muffins for a cafe. By noon, 45% of the muffins were sold. How many muffins were sold by noon?

hodyreva [135]

Answer:

27 muffins.

Step-by-step explanation:

We have been given that a baker made 60 muffins for a cafe. By noon, 45% of the muffins were sold.

To find the number of muffins sold by noon let us find 45% of 60.

$\text{The number of muffins sold by noon}=\frac{45}{100}\times 60$

$\text{The number of muffins sold by noon}=0.45\times 60$

$\text{The number of muffins sold by noon}=27$

Therefore, 27 muffins were sold by noon.

3 0

3 years ago

Solve the system of equations by using substitution.<br> y = 2x – 3<br> y = x+4

Marina CMI [18]

Answer:

point form=7,11 x= 7,y =11

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Use Wolframalpha to find the exact volume of the solid obtained by rotating about x = [pi]/2 the region bounded by y = sin^2x, y

Alex777 [14]

Answer:

Step-by-step explanation:

Here the region between two curves is rotated about a vertical line.

The functions are

$y = sin^2x, \\y = sin^4x, \\x in [0,[pi]/2].$

Intersecting points are x=0 and x =pi/2

Since rotated about x = pi/2 we get

using cylindrical shell method

Volume = $2\pi rh\\=2\pi \int\limits^\frac{\pi}{2} _0 {xy} \, dx \\=2\pi \int\limits^\frac{\pi}{2} _0 (x+\frac{\pi}{2} )(sin^2 x -sin^4 x) dx\\$

From wolfram alpha we find that

Volume= $2\pi (\frac{3\pi^2 }{64)} =\frac{6\pi^3}{64}$

4 0

4 years ago