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sasho [114]
3 years ago
13

Twenty students in class A and 20 students in class B were asked how many hours they took to prepare for an exam.

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
6 0
The mean study time is less for class b then class a
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What is the product?
xxMikexx [17]

Answer:

{ \tt{(5r - 4)( {r}^{2} - 6r + 4) }} \\  = {  \tt{( {5r}^{3}  -  {30r}^{2}  + 20r - 4 {r}^{2} + 24r - 16) }} \\  = { \tt{ {5r}^{3} - 34 {r}^{2}  + 44r - 16 }}

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3 years ago
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(-11r+14+9r^3) + (3-8r^5+14r^3)
murzikaleks [220]
-8r^5+23r^3-11r+17

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3 0
3 years ago
Can you answer this correctly please
Julli [10]

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option 1

Step-by-step explanation:

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If a circle has a diameter of 6 cm, which values is closest to its circumference?
maks197457 [2]

Answer:

18.85 (rounded to the nearest hundredth)

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The formula for diameter of a circle is "C=2\pir". With this in mind, we have to find the radius. We do this by cutting the diameter in half. Now we can fill in the formula.

C = 2 · \pi · 3 = 18.849555921539

4 0
2 years ago
If a = 3 and b = 5, what is the value of the following expression?
Jobisdone [24]
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46

46 is the answer :))
8 0
3 years ago
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