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4 years ago

Identify the radical expression of 5^1/3.

Mathematics

1 answer:

Alla [95]4 years ago

7 0

Answer:

Step-by-step explanation:

The ⅓ power means cube root.

5^⅓ = ∛5

Answer D.

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Mr. Nevin buys a car for $18,500. The value of the car depreciates 9% per year; 7 year

s2008m [1.1K]

Y=a(b)^x
y=$18,500 (.91)^7
y= $9,560.07
The car depreciation in 7 years: $9,560.07

4 0

4 years ago

A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the followin

maks197457 [2]

Answer:

(a) $\sum x_i=56.68$ and $\sum x_i^2=197.46$

(b) The sample variance is $s^2=0.530$ and the sample standard deviation is $s=0.728$

Step-by-step explanation:

(a)

The sum of these 17 sample observations is

$\sum x_i=2.79\:+2.57+\:2.73\:+3.75\:+2.27+\:2.75+\:4.00+\:4.22+\:3.88+\:4.35+\:3.41+\:4.57+\:2.38+\:3.73\:+2.75+\:3.47+\:3.06\\\\\sum x_i=56.68$

and the sum of their squares is

$\sum x_i^2=2.79^2\:+2.57^2+\:2.73^2\:+3.75^2\:+2.27^2+\:2.75^2+\:4.00^2+\:4.22^2+\:3.88^2+\:4.35^2+\:3.41^2+\:4.57^2+\:2.38^2+\:3.73^2\:+2.75^2+\:3.47^2+\:3.06^2\\\\\sum x_i^2=197.46$

(b)

The sample variance, denoted by $s^2$ , is given by

$s^2=\frac{S_{xx}}{n-1}$

where $S_{xx} =\sum x_i^2-\frac{(\sum x_i)^2}{n}$

Applying the above formula we get that

$S_{xx}=197.46-\frac{(56.68)^2}{17}\\\\S_{xx} =8.482$

$s^2=\frac{8.482}{17-1}=0.530$

The sample standard deviation, denoted by <em>s</em>, is the (positive) square root of the variance:

$s=\sqrt{s^2}$

Applying the above formula we get that

$s=\sqrt{0.530}=0.728$

3 0

3 years ago

There are 50 bacteria in a test tube. After one hour, the number of bacteria is 100. After two hours, the number of bacteria is

r-ruslan [8.4K]

I think its n(50 x 2)

7 0

3 years ago

Read 2 more answers

The table below shows the ages of Ron and his brother,Raymond. Write a sentence that explains Raymond's age in terms of Ron's ag

oksano4ka [1.4K]

Raymonds age (y) is Rons age (x) plus 5 years.

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3 years ago

alexira [117]

Answer:

Step-by-step explanation:

To find the range, we subtract the smallest number in the set from the largest number.

The largest number is 66. The smallest number is 42.

66-42=24.

The range is 24.

8 0

3 years ago