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Nana76 [90]
3 years ago
7

A four-person committee is chosen from a group of eight boys and six girls.

Mathematics
2 answers:
Elenna [48]3 years ago
8 0

Answer:

The answer is 10/143

Step-by-step explanation:

Fed [463]3 years ago
5 0

Answer:

10/143

Step-by-step explanation:

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A culture started with 3000 bacteria. After 4 hours, it grew to 3,600 bacteria. Predict how many bacteria will be present after
Vlad [161]
Hello Shannonrodrigue. You can solve this by setting up an exponential growth equation.

A = A_ob^t
3600 = 3000b^4

Now we solve for b
3600 = 3000b^4
\frac{3600}{3000} = \frac{3000b^{4}}{3000}
\frac{6}{5} = b^4
\sqrt[4]{\frac{6}{5}} = \sqrt[4]{b^4}
\sqrt[4]{\frac{6}{5}} = b

Now that we have found b, we can use the equation A = 3000b^t to predict how many bacteria will be present after 10 hours.
b = \sqrt[4]{\frac{6}{5}}
t = 10
A = 3000b^t
A = 3000\sqrt[4]{\frac{6}{5}}^{10} = 4732.3228 = 4732

Answer = 4732



4 0
3 years ago
Solve pls for brainliest
Luden [163]

Answer:

19. 6561

20. 196

22. \frac{256}{25}

23. \frac{1}{16}

24. \frac{2}{9}

5 0
3 years ago
In a class where there are a total of 80 pupils, 20 are girls and the remaining
babymother [125]

Answer:

75%

Step-by-step explanation:

First find the number of boys.

80 - 20 = 60

Now find the percentage my taking the number of boys upon the total, times that by 100 which gives the percentage.

\frac{60}{80} × 100 = 75%

8 0
2 years ago
Read 2 more answers
Please help it’s the end of the semester test
Gekata [30.6K]

Answer:

B

Step-by-step explanation:

bc

6 0
2 years ago
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how many pounds of nuts selling for $9 per lb and raisins selling for $3 per lb should a person combine to obtain 60 lb of a tra
marta [7]
Let n be the number of lbs of nuts.
Let r be the number of lbs of raisins.
9n + 3r = 60 * 5 = 300 .............(1)
n + r = 60
n = 60 - r ...............(2)
Plugging the expression for n in (2) into (1) we get:
9(60 - r) + 3r = 300
which expands to:
540 - 9r + 3r = 300 .............(3)
Simplifying and rearranging (3) we get:
-6r = -240
Therefore r, the weight of raisins = 40 lbs
and the weight of nuts is 60 - 40 = 20 lbs
8 0
3 years ago
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