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iren [92.7K]
3 years ago
7

If five notebooks cost $5.25 how much would 3 cost?

Mathematics
2 answers:
34kurt3 years ago
6 0
3.15. Just find the unit rate which is 1.5 and multiply that by 3
slamgirl [31]3 years ago
3 0
Each Notebook is 1.05 so add that three times and you get 3.15!
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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

{\displaystyle 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

{\displaystyle 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

{\displaystyle 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

{\displaystyle 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 simplest form of the number 27 2/3
Rashid [163]
The simplest for this answer is 27.66666666..... or 83/3. Hope it help!
8 0
2 years ago
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How to find the exact value of each trigonometric function without a calculator?
Goryan [66]
Remember them is the best way to go.
draw the exact value triangles if you're unsure, but importantly, you just need to memorise these exact values.


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Melissa bought 3 loaves of freshly baked bread at a specialty bread shop. She paid twice as much for the whole grain bread as fo
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Answer:

B

Step-by-step explanation:

The first f is the price of the french bread, the 2f is the price of the whole grain(twice that of the french) and f+$2.50 is the cost of the cinnamon raisin ($2.50 more than the french)

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Fine Floors can install 15 square yards of carpeting in 4 hours and 30 minutes. At this rate, how long would it take to install
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D is your awnser here
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