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bekas [8.4K]
3 years ago
6

60PTS Which expression is equivalent to 3^2 x 3^-5

Mathematics
1 answer:
mel-nik [20]3 years ago
8 0

Answer:

The answer to 3^2 ⋅ 3^−5 is 1/27=.037

The answer is 1/27

Step-by-step explanation:

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Donnell and Maria are both members of a populationand a simple random sample is being conducted. If the chance of Donnell being
harina [27]

Answer:

289/290

Step-by-step explanation:

Given that the chance of Donnell being selected is 1/290

then P( Donnell being selected )= 1/290

Since Donnell and Maria are both member of a population.

from probability theorem which gives the likely hood of an event to happen which cannot be more than 1, then the probability of Donnell and Maria to be selected is 1

P(Donnell and Maria)= 1

But the chance of Donnell being selected is 1/290

Then,

1/290 + P(Maria)= 1

P(Maria)= 1-(1/290)

= 289/290

the chance of Maria being selected is 289/290

4 0
3 years ago
30 POINTS AND I WILL MARK YOU BRAINLIEST !!!
maxonik [38]

Answer:

#1. 40

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Step-by-step explanation:

3 0
3 years ago
the width of a rectangle is 9m less than it's legnth if the perimeter of the rectangle is 54m find the legnth of the garden​
Nata [24]

Perimeter of rectangle = 2(l+w)

So, 54cm = 2(l+9cm)

=> 54cm = 2l + 18cm

=> 54cm - 18cm = 2l

=> 36cm = 2l

=> 36cm/2 = l

=> 18cm = l

4 0
3 years ago
Which graph represents the solution to the system of equations y = ½x + 1 y = -2x + 8<br>​
miv72 [106K]

Step-by-step explanation:

sorry but I don't get this

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6 0
3 years ago
A random sample of 160 car crashes are selected and categorized by age. The results are listed below. The age distribution of dr
sasho [114]

Answer:

25.05

Step-by-step explanation:

Given that a random sample of 160 car crashes are selected and categorized by age. The results are listed below. The age distribution of drivers for the given categories is 18% for the under 26 group, 39% for the 26-45 group, 31% for the 45-65 group, and 12% for the group over 65.

     

<26 26-45 46-65` >65  

Observed  O 66 39 25 30 160

Expected  E 40 40 40 40 160

     

Chi square      

(O-E)^2/E 16.9 0.025 5.625 2.5 25.05

Thus we get chi square test statistic = 25.05  

5 0
3 years ago
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