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Inga [223]
3 years ago
9

What is the common difference of the sequence 20, 17, 14, 11, 8.... ?

Mathematics
2 answers:
Vinvika [58]3 years ago
8 0

Answer:

-3

Step-by-step explanation:

every sequence goes down by -3

ryzh [129]3 years ago
6 0

Answer:

take away 3. the common difference is 3

Step-by-step explanation:

take away 3

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The st. joe company grows pine trees and the average annual increase in tree diameter is 3.1 inches with a standard deviation of
77julia77 [94]

Solution: We are given:

μ=3.1,σ=0.5,n=50

We have to find P(Mean <2.9)

We need to first find the z score

z= (xbar-μ)/(σ/sqrt(n))

=(2.9-3.1)/(0.5/sqrt(50))

=(-0.2)/0.0707

=-2.83

Now we have to find P(z<-2.83)

Using the standard normal table, we have:

P(z<-2.83)=0.0023

Therefore the probability of the sample mean being less the 2.9 inches is 0.0023

5 0
3 years ago
A parallelogram is a four-sided figure
stellarik [79]
The sum of the parallelogram is 22 because I did the test
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2 years ago
Please help quickly i really need it
wariber [46]

Answer:

(x - 6)² = 18

Step-by-step explanation:

(x - 6)² = 18

x² - 12x + 36 = 18

x² - 12x + 18

6 0
3 years ago
Trapezoid A B C D is shifted down and to the left to form trapezoid A prime B prime C prime D prime. Trapezoid A prime B prime C
JulsSmile [24]

Answer:

a 270° rotation about point B'

8 0
2 years ago
Read 2 more answers
Micheal has a set of 5 cards shown below. Micheal wil randomly select a card, not replace it, then select another card. What is
strojnjashka [21]

Answer:

3/20 or 15%

Step-by-step explanation:

Out of 1,2,3,4, and 5, there are 3 prime numbers. This makes the odds of selecting one of those prime numbers 3/5. Then, saying that he does pick a prime number and discards that card, there are now four cards, one of them being the number one. His chances of selecting this card is 1/4.

To find the probability you need to multiply the two probabilities together.

3/5 times 1/4 is 3/20.

So your answer is 3/20 or 15%.

4 0
3 years ago
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