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Temka [501]
3 years ago
13

rowan has a bag with 15 pencils in it. There are 7 green pencils, 2 blue pencils, 3 orange pencils, 1 red pencil and 2 purple pe

ncils. She randomly selects a pencils, records the color, and puts the pencil back into the bag. She does this 120 times. About how many times should Rowan expect to select an orange pencil?
Mathematics
1 answer:
IceJOKER [234]3 years ago
3 0

WHAT IS PERCENT DO THE PERCENT CHANT! SPREAD THIS

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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
A² +6²<br> a-b<br> if a = 3 and b = 4<br> Evaluate each expression using the variable replacements.
Arturiano [62]
Knowing what the variables are means that all we have to do is substitute:
[ ( 3 ) ^2 + ( 4 ) ^2 ] / 4 - 3 =
( 9 + 16 ) / 1 =
25
3 0
3 years ago
Read 2 more answers
Write the prime factorization of each number 6760​
sergey [27]

Answer: 2, 2, 2, 5, 13, 13.

Step-by-step explanation:

Here is the math in order to find the prime factorization

6760 ÷ 2 = 3380

3380 ÷ 2 = 1690

1690 ÷ 2 = 845

845 ÷ 5 = 169

169 ÷ 13 = 13

13 ÷ 13 = 1

8 0
2 years ago
Solve. X2 ? 5x = 14 A) x = 0, x = 5 B) x = 0, x = ?5 C) x = 2, x = ?7 D) x = 7, x = ?2
Ymorist [56]
The answer would be letter D.
8 0
3 years ago
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Suppose that f(x) = x + 4 and g(x) = -x + 3. Find (f )(g)(4).
stellarik [79]

Answer:

-12

Step-by-step explanation:

I am assuming that you want (f*g)(4), which is the product of f and g at x = 4.

If this is actually the case, then one way to evaluate (f*g)(4) is to find f(4) and g(4) separately and then multiply the results together.  This gives us

f(4)*g(4) = (8 + 4)*(-4 + 3) = -12

3 0
3 years ago
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