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Vedmedyk [2.9K]
3 years ago
13

Helppppp math is my worst subject

Mathematics
2 answers:
galben [10]3 years ago
7 0
It's  x+4 over x+1 as a fraction.

Hope that helped :)
yarga [219]3 years ago
3 0
  well i got 
x+4/x+1
when i calculated it 


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Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds. What was his average spee
kirill [66]

Answer:

His average speed was of 10.42 m/s

Step-by-step explanation:

We use the following relation to solve this question:

v = \frac{d}{t}

In which v is the velocity(in m/s), d is the distance(in meters), and t is the time, in seconds.

Usain Bolt of Jamaica set a world record in 2009 for the 200- meter dash with a time of 19.19 seconds.

This means that d = 200, t = 19.19

So his average speed was of:

v = \frac{d}{t} = \frac{200}{19.19} = 10.42

His average speed was of 10.42 m/s

6 0
3 years ago
Describe a normal probability distribution. a. bell-shaped.b. mean, median, and mode all equivalent.c. bimodal.d. symmetric arou
garri49 [273]

Answer:

a) bell-shaped.              

b) mean, median, and mode all equivalent.      

d) symmetric around the mean.        

g) most of the data fall within 3 standard deviations from the mean.

Step-by-step explanation:

We have to describe a normal distribution.

a. bell-shaped.

This is true a normal distribution is a bell shaped distribution.

b. mean, median, and mode all equivalent.

This is true for a normal distribution.

Mean = Mode = Median

c. Bimodal

The is not true about the normal distribution. A normal distribution is unimodal and the mode is equal to the mean of the distribution.

d. symmetric around the mean.

This is true. The normal distribution is centered around the mean

e. skewed to the right.

This is not a property of normal distribution.

f. models discrete random variables.

Normal distribution is a continuous distribution.

g. most of the data fall within 3 standard deviations from the mean.

This is true. According to Empirical rule, almost all the data lies within three standard deviation of mean.

h. uniform-shaped

This is not true. A normal distribution is bell shaped.

4 0
3 years ago
HELP QUICK!!!<br><br> 5x2+30x+45/(x+3)^2
Ronch [10]
The answer is in the red part but the work is everything on top.

5 0
3 years ago
Graph y=-2x+5<br> Plz hurry
Vedmedyk [2.9K]

Answer:

Here's a picture of the answer.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Work out the value of x when <br> 2^30 / 8^9 =2^x
vesna_86 [32]
X=3 lollllllllllllllll
6 0
2 years ago
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