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lisabon 2012 [21]
3 years ago
6

If f(x)=√2x+3/6x-5, then f(-1/2)=

Mathematics
1 answer:
denis23 [38]3 years ago
8 0

answere=-1

this is the answere and the explanation.

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Solve the inequality <br> -7&lt;3x+5 less than or equal to(no sign for that)7
olganol [36]

Answer:

x=-1

Step-by-step explanation:

-7 < 3(x) + 5 ≤  7

-7 < 3(-1) + 5 ≤  7

-7 < -3 + 5 ≤  7

-7 < 2 ≤  7

6 0
3 years ago
A sample of size 20 from a normal distribution has sample mean 3.5 and sample variance 14.75. Find 90% confidence intervals for
aleksley [76]

Answer:

Variance =9.2983, 27.6927

Standard deviation = 3.0493, 5.2624

Step-by-step explanation:

n = 20

S = 14.75

X² = chisquare

N-1 = degree of freedom

Alpha = 0.1

Alpha/2 = 0.1/2 = 0.05

1-0.1/2 = 0.95

Using statistics table

X² 19,0.05 = 30.14

X² 19, 0.95 = 10.12

A. 19(14.75)/30.14 , 19(14 75)/10.12

= 9.2983, 27.6927 for the variance of the population

B. Standard deviation = square root of variance

= √9.2983, √27.6927

= 3.0493, 5.2624

Please use attachment for better understanding

5 0
3 years ago
There are 3 numbers: 5,
MA_775_DIABLO [31]

solution

Mean of two smallest number (3+5 =8/2) =4

Mean of all the three (3+5+19 =27) 27/3 = 9

so the mean of two largest number is 19+5 = 24 /2 = 12

Final Answer

The mean of two largest Number is 12

8 0
3 years ago
The distance, d, is greater than 5 miles. Write an inequality to represent the statement. How many solutions does the inequality
trapecia [35]
< = more than
> = less than
So therefore,
D > 5 miles

Hope this helped !
5 0
3 years ago
Read 2 more answers
I need to know these new coordinates
hammer [34]
P(-1, 1)
G(2,1)
R(1,-3)
S(-2,-3)
3 0
3 years ago
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