Please help !!!!!!!!

Mathematics

1 answer:

ivolga24 [154]3 years ago

4 0

Answer:

Step-by-step explanation:

162, 188, 197, 201, 266

a. add all number: 1014/ 5 = 202.8

b. 266-162 = 104

c. for each number subtract the mean and square the result.

1664.64+219.04+33.64+3.24+3994.24

= 5914.8/5 = 591.48

d. square root of variance

= 24.32

e. i don't know this one because i need the number of people in the family

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Which is an exponential decay function f (x)=3/4 (7/4)x f (x)=2/3 (4/5)-x. F (x)=3/2 (8/7)-x f (x)=1/3 (9/2)x

dsp73

The given functions are
$1.\, f(x)= \frac{3}{4}( \frac{7}{4})^{x} \\ \\2.\,f(x)= \frac{2}{3}( \frac{4}{5} ) ^{-x}\\\\3.\, f(x)= \frac{3}{2} ( \frac{8}{7} )^{-x}\\\\4.\,f(x)= \frac{1}{3} ( \frac{9}{2} )^{x}$

Evaluate the functions.
1. Because 7/4 > 1 and the exponent is positive,
the function does not decay.
2.Because 4/5 < 1 and the exponent is negative,
the function does not decay.
3. Because 8/7 > 1 and the exponent is negative,
the function decays.
4. Because 9/2 > 1 and the exponent is positive,
the function does not decay.

A composite plot the functions verifies the answer.

Answer: $f(x)= \frac{3}{2} ( \frac{8}{7} )^{-x}$