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Elden [556K]
3 years ago
12

Please help will give brainly points

Mathematics
2 answers:
damaskus [11]3 years ago
8 0

Answer:

9

-6a = 54

9x = -45

54 + (-45) = 9

Mkey [24]3 years ago
4 0

Answer:

-11

Step-by-step explanation:

if you put the numbers of the variebles in, it would be

-6-9+9-5

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There are 5 pens in a container on your desk. Among them, 3 will write well but 2 have defective ink cartridges. You will select
Norma-Jean [14]

Answer:

Kindly check explanation

Step-by-step explanation:

Total Number of pens = 5

Number of defective pens = 2

Number of non-defective pens = 3

A.) number of defective pens selected :

X : {0, 1, 2}

It is possible that no defective pen will be selected ; 1 defective will be chosen or both pens are defective.

2.)

Defective as Success (since selecting a defective pen is the point of interest.

3.)

Since selection is done without replacement

Probability of success per selection is different for each selection ;

Number of defective = 2

Number of observations = 5

P(success on first selection) = 2/5

P(success on second selection) = 1/4

Hence, X is not well approximated by a binomial random variable.

4.) if selection is done with replacement ; then then the probability of success per selection will be the Same for each selection made. Hence, X will be well approximated by a binomial Random variable.

5.) If sampling is done without replacement, then the the hypergeometric function will be a more effective approximation.

7 0
3 years ago
What two numbers multiply to 75 and add too -20
tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

-15 times -5 = 75

-15 + -5 = -20

5 0
3 years ago
A 100-meter-long christmas train needs 30 seconds to cross a 400-meter-long bridge. assuming the train goes at a steady speed, h
san4es73 [151]
Length of train : 100
length of bridge : 400
distance covered by the train to cross the bridge : (100 + 400) = 500
time taken by the train to cross : 30

speed = distance / time
speed = 500/30
speed = 16.67 meters per second <===
8 0
3 years ago
Your round trip drive to school is 3 7/10 miles.how many miles do you drive to and from school in 5 days?
riadik2000 [5.3K]

Answer:

18 1/2 miles

Step-by-step explanation:

3 7/10 * 5

Change to an improper fraction

(10* 3 + 7)/10    * 5

37/10 *5

Rewriting

37 * 5/10

37/2

Changing back to an mixed number

2 goes into 37 18 times with 1 left over

18 1/2

5 0
3 years ago
What is the first consecutive even integer that follows -6
Gnoma [55]
-4 is the first consecutive even integer following -6<span />
8 0
3 years ago
Read 2 more answers
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