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3 years ago

14

You are going to sell your Samsung so you can get the new iPhone. You purchased your Samsung 2 years ago for $200. It's

2 answers:

jonny [76]3 years ago

7 0

Answer:

$123

Step-by-step explanation:

initial price= $200

value decrease rate= 2% = 0.98 times a month

time = 2 years

current value= $200*0.98²⁴= $123

ZanzabumX [31]3 years ago

5 0

Answer:

$\boxed{\ 123 \ dollars\ }$

Step-by-step explanation:

its value decreases at a rate of 2% each month

in 2 years there are 12*2=24 months

so the Samsung worth $200(0.98)^{24}\\$

it gives 123 rounded to the nearest dollar

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dem82 [27]

Hello there!

The answer is 13 trust me. the answer should be 29 for no reason. but answer 13 and you'll get it right.

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A 4-foot tall child walks directly away from a 12-foot tall lamppost at 2 mph. How quickly is the length of her shadow increasin

xz_007 [3.2K]

Answer:

The length of the shadow is increasing with the rate of 1.5 feet per sec

Step-by-step explanation:

Let AB and CD represents the height of the lamppost and child respectively ( shown below )

Also, let E be a point represents the position of child.

In triangles ABE and CDE,

$\angle ABE\cong \angle CDE$ ( right angles )

$\angle AEB\cong \angle CED$ ( common angles )

By AA similarity postulate,

$\triangle ABE\sim \triangle CDE$

∵ Corresponding sides of similar triangles are in same proportion,

$\implies \frac{AB}{CD}=\frac{BE}{DE}$

We have, AB = 12 ft, CD = 4 ft, BE = BD + DE = 6 + DE,

$\implies \frac{12}{4}=\frac{6+DE}{DE}$

$12DE = 24 + 4DE$

$8DE = 24$

$DE=3$

Now, the speed of walking = 2 mph = $\frac{2\times 5280}{3600}\approx 2.933\text{ ft per sec}$

Note: 1 mile = 5280 ft, 1 hour = 3600 sec

Thus, the time taken by child to reach at E

$= \frac{\text{Walked distance}}{\text{Walking speed}}$

$=\frac{6}{2.933}$

= 2.045 hours

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$= \frac{\text{Length of shadow}}{\text{Time taken}}$

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2 years ago

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gogolik [260]

Answer:

0.021 < 0.099 < 0.845

Step-by-step explanation:

Given numbers:

0.021, 0.845, and 99/1,000 = 0.099
0.021, 0.845, 0.099

In ascending order:

0.021 < 0.099 < 0.845

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Elis [28]

$y= -\frac{3x}{2} +1$

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