Astudy was conducted to determine the mean birth weight of a certain breed of kittens. consider the birth weights of kittens to be normally distributed. a sample of 45 kittens was randomly selected from all kittens of this breed at a large veterinary hospital. the birth weight of each kitten in the sample was recorded. the sample mean was 3.56 ounces, and the sample standard deviation was 0.2 ounces. what is the margin of error for a 90% confidence interval on the mean birth weight of all kittens of this breed.

answer:

no solution

step-by-step explanation:

x=-3y-)

3x+9y=)

from equation (2)

3(-3y-5)+9y=7

combine

-9y-15+9y=7

collect the like terms

-9y+9y=7-15

0=-8

no solution

answer:

first option. f(x) has no zeroes

second option. f(x) has a period of 2π.

step-by-step explanation:

1) the function sec(x) is the inverse of the cosine function:

this function has no zeroes, because:

it can not be equal to zero

then the first option is true.

2) as the secant function is the inverse of the cosine function, it has the same period 2π, then the second option is true.

3) the cosine function has an amplitude of 1, but the secant function does not, then the third option is false.

4) the secant function is symmetric about the y-axis, but not about the origin, then the fourth option is false.

5) the asymptotes of the secant funtion are where the cosine function is equal to zero, this is at integer multiples of π/2, then 5the fifth option is false.  

answer:

36 cm^2

step-by-step explanation:

the formula for the area of a parallelogram is area = base (height). so area - 6(6). so the answer is 36 square cm.