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ValentinkaMS [17]
3 years ago
8

The arithmetic mean of two numbers is 18 and the geometric mean is 16. find the sum of squares of the numbers

Mathematics
1 answer:
Svetlanka [38]3 years ago
6 0
X+y=36
xy=256

x=256/y
256/y + y = 36

256/y + y²/y = 36y/y

y² - 36y +256 = 0

use the quadratic formula to get 18+2√17 and 18-2√17. ugly numbers but they work!

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A=160, b=110, C=54. What is the distance between AB?
Schach [20]

Answer:

50

Step-by-step explanation:

answer is 50

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3 years ago
A car valued at £18000 at the start of 2017, depreciated in value by 5% each year for 3 years. How much did it lose in value ove
Anna11 [10]

<u>Answer:</u>

The amount lost over the 3 years s 2567.25£  

<u>Explanation:</u>

$\mathrm{F}=\mathrm{I} \times\left(1-\left(\frac{r}{100}\right)\right)^{\mathrm{n}}$

where F = final value after n years

I = initial value of the car in 2017 = £18000 (given)

Since the value is depreciated 5% every year for 3 years,

r = percentage rate of depreciation = 5% (given)

n = 3 years

Substituting these values in formula, we get

$\mathrm{F}=18000 \times\left(1-\frac{5}{100}\right)^{3}$

= $18000 \times\left(\frac{95}{100}\right)^{3}$

 = 15432.75£ which is the value of the car after 3 years

Finally 18000-15432.75 = 2567.25£ is the amount lost over this period.  

6 0
3 years ago
A list of values that can be ordered from least to greater
Romashka [77]

Step-by-step explanation:

50, 278, 976, 6866, 68, 48.77, 68 1/9

4 0
3 years ago
Divide the following complex numbers: (4-i)/(3+4i) ??
frez [133]

The answer is \frac{8}{25} -i\frac{19}{25}

Steps: (<em>in the attachment</em>)↓↓↓↓↓

<em>Hope this helps!!</em>

3 0
3 years ago
When looking for a job, Micah is told that the monthly salary has a range of $876. He also knows that the starting salary is $1,
blondinia [14]
This statement describes a range of Micah's salary.

The range is a number that describes the distance from the beginning of something to the end of something.

In this scenario the beginning would be the beginning salary, in the end salary would be where you stop at end at after adding $876.

$1793(starting) + $876 = $2669

The maximum amount of money that Micah could earn would be $2669.
8 0
4 years ago
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