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Bess [88]
3 years ago
10

can someone help me pls?

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
8 0

Answer:

<h2> decreasing:   (-2, -1)∪(-1, 0) </h2>

Step-by-step explanation:

From  x = -2 to x = 0 function is decreasing, but for x= -1 function doesn't exist, so we need to exclude x = -1 from (-2, 0)

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22. The mean of 15 observations is 32. Find the resulting mean, if each observation is: (i) increased by 3 (ii) decreased by(v)
Lubov Fominskaja [6]

Answer:

35 ;

32 + v

51.2

Step-by-step explanation:

If each observations in a particular set is increased or decreased by a uniform or fixed number, the mean of the resulting output will also increase by the same amount

Hence,

For 15 observations whose mean is 32

If each observation is increased by 3, then the resulting mean will also increase by 3 ; hence, new mean = 32 + 3 = 35

If each observation is decreased by v ; the resulting mean would also decrease by v ;

32 - v

If each observation is increased by 60% ; the resulting mean will be ;

(1 + 60%) * initial mean

(1 + 0.6) * 32

1.6 * 32 = 51.2

8 0
2 years ago
a motorcycle traveling at 25 m/s acceleration at the rate of 7.0 m/s for 6.0 seconds what is the final speed of the motorcycle?​
oee [108]

Answer:

42m/s

Step-by-step explanation:

acceleration = speed/time

7.0 = s/6.0

42.0m/s = speed

8 0
2 years ago
Read 2 more answers
If f(x) =x2 +8 what is f(x) when x = 10
Shtirlitz [24]
F(x)= x² + 8 

When x = 10

f(x) = 10² + 8 = 108

Answer: 108
8 0
3 years ago
I need help answering 6x+8=26
melomori [17]
First you subtract 8 from 26, which is 18. Then you divide 18 by 6, which is 3. x equals 3. 
5 0
3 years ago
Read 2 more answers
Pls help it says what is volume and how is it measured pls help
solmaris [256]

Volume is the measure of how much space a 3d object takes up (like area for 2d objects). It is measured in cubic parts (5 cubic inches, 12 cubic centimeters). There are many volume formulas. The easiest and most common is of the volume of a rectangular prism, for which you do lenght * width * height..

I hope this answers your question!

8 0
3 years ago
Read 2 more answers
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