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3 years ago

What is the zero of function f? f(x)=7^3Vx+12-12

Mathematics

1 answer:

MrRissso [65]3 years ago

7 0

Answer:

hope it helps ya.

please give me brainliest

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Suppose we want to estimate the average weight of an adult male in Mexico. We draw a random sample of 2,000 men from a populatio

LenKa [72]

Answer:

1.- CI = 94% ( μ₀ - 1,04 < x < μ₀ + 1,04 )

2.- CI = 98 % ( μ₀ - 2,05 < x < μ₀ + 2,05 )

3.- CI = 96 % ( μ₀ - 1,75 < x < μ₀ + 1,75 )

Step-by-step explanation:

Sample size n = 3000000

Sample mean x = 200

Standard deviation s = 30

From z-table values of z(c):

CI 94 % Confidencial level α = 6 % α = 0,06 z(c) = 1,55

CI 98 % Confidencial level α = 2 % α = 0,02 z(c) = 2,05

CI 96 % Confidencial level α = 4 % α = 0,04 z(c) = 1,75

MOE = z(c) * σ/√n

1.-MOE = 1,55* 30 / √2000 MOE = 1,04

2.-MOE = 2,05*30/√2000 MOE = 1,38

3.-MOE = 1,75*30/√2000 MOE = 1,17

Then CI

1.- CI = 94 % ( μ₀ - MOE < x < μ₀ - MOE )

CI = ( μ₀ - 1,04 < x < μ₀ + 1,04 )

2.-CI = 98 %

CI = ( μ₀ - 2,05 < x < μ₀ + 2,05 )

3.- CI = 96 %

CI = ( μ₀ - 1,75 < x < μ₀ + 1,75 )

7 0

3 years ago

Evaluate this expression if x = -4, y = 5, and z = -13.<br><br> x - (-z)

LiRa [457]

Answer:

-17

Step-by-step explanation:

x - (-z)

Subtracting a negative is like adding

x+z

x = -4 and z = -13

-4 + -13

-17

8 0

3 years ago

Read 2 more answers

Plz do both of them for me and even show the work plzzzzzz

Vinvika [58]

Answer:

(a)= option 3

(b)= option 3

Step-by-step explanation:

(A) It is given that a sequence is defined by the recursive function $a_{1}=1$ and $a_{n}=a_{n-1}+n$

Now, substituting the value of n=2 in above equation,

$a_{2}=a_{1}+2$

$a_{2}=1+2$

$a_{2}=3$

Again putting n=3,

$a_{3}=a_{2}+3$

$a_{3}=3+3$

$a_{2}=6$

Putting n=4,

$a_{4}=a_{3}+4$

$a_{4}=6+4$

$a_{4}=10$

Putting n=5,

$a_{5}=a_{4}+5$

$a_{5}=10+5$

$a_{5}=15$

Putting n=6,

$a_{6}=a_{5}+6$

$a_{6}=15+6$

$a_{6}=21$

Putting n=7,

$a_{7}=a_{6}+7$

$a_{7}=21+7$

$a_{7}=28$

Hence, option 3 is correct.

(B) The given sequence is :

5, -10, 20, -40, 80.....

Since, the given sequence is GP, therefore

$a_{1}=5$ and r=-2

The nth term is given by:

$a_{n}=a_{1}r^{n-1}$

For fifteenth term, put n=15 in above equation, we get

$a_{15}=5(-2)^{14}$

= $5{\times}16384$

= $81920$

Hence, the fifteenth term is 81920.

Option 3 is correct.

5 0

3 years ago

Need help in number 30 please help

Mariana [72]

Y^2-9y+81 can not be factored with any rational numbers

5 0

3 years ago

What is the median of these numbers<br> 32, 16, 54, 60, 26, 32

Snezhnost [94]

They are the odd ones

8 0

2 years ago

Read 2 more answers