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scoundrel [369]
2 years ago
8

3(2a+b) for b=4 and a=a

Mathematics
2 answers:
Kamila [148]2 years ago
8 0

Answer:

I miss the rage

Step-by-step explanation:

YAAAAAAAAAAAAAAAAAAAAAAA

creativ13 [48]2 years ago
5 0

Answer:

6a+12.

Step-by-step explanation:

a=a and b=4

=6a + 3b

=6a+3×4

=6a+12.

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A researcher wants to estimate the mean commute time of residents in Westchester County. The researcher samples 40 commuters and
Ksenya-84 [330]

Answer:

21.759

Step-by-step explanation:

Given that :

Mean (m) = 25

Standard deviation (s) = 12.5

Sample size (n) = 40

α = 90%

The confidence interval is obtained using the relation:

Mean ± Zcritical * s/sqrt(n)

Zcritical at 90% confidence interval = 1.64

25 ± 1.64 * (12.5/sqrt(40))

Lower boundary : 25 - 1.64(1.9764235) = 21.75866546

Upper boundary : 25 + 1.64(1.9764235) = 28.24133454

(21.759, 28.241)

Hence, lower bound of confidence interval is : 21.759

4 0
3 years ago
Deena has 4 pairs of of white socks , 3 pairs of black sock, 1 pair of red socks, and 2 pairs of Navy socks in her drawer each p
makkiz [27]

Answer:

2/5

Step-by-step explanation:

Ok there are 4+3+1+2 pairs of socks in all... Aka 10 sock pairs in all.

There are 4 white pairs.  So the probability she selects a white pair is 4/10.

4/10 can be reduced to 2/5.

7 0
3 years ago
Read 2 more answers
What is the value of x? <br> A. 19.8 <br> B. 27.2 <br> C. 12.9 <br> D. 9.4 <br> E. 11.6
PolarNik [594]

Answer:

D

Step-by-step explanation:

sin36/x=sin90/16

x=9.4

4 0
2 years ago
Which of the following points is located
Tasya [4]

Answer:

(15,2),

Step-by-step explanation:

8 0
2 years ago
The population of austin, texas in 1990 was 472,000 people. The population in 1980 was 346,000 people.​
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