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sattari [20]
3 years ago
7

ALGEBRA 1, SEM. 2

Mathematics
1 answer:
romanna [79]3 years ago
6 0

This is [ (f(2) - f(-2) ] / ( 2 - (-2)

= 1/16 - 16 / 4

= -255/64

= -3 63/64

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Line DF is an altitude of triangle EDG. Find the value of x. Round to the nearest tenth.
nexus9112 [7]

Answer:

  • <u><em>x = 2.4</em></u>

Explanation:

<u>Description of triangle EFD</u>:

  • Angle EFD: right angle  (90º)
  • x: adjacent leg to angle EDF
  • 3: hypotenuse of triangle EFD

<u>Description of triangle EDG</u>:

  • Angle EDG: right angle (90º)
  • 4 adjacent leg to angle EGD
  • 5: hypotenuse of triangle EDG

<u>Similarity</u>:

  • Triangle EFD and triangle EGD are similar.

Then, since corresponding parts of similar triangles are proportional:

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<u>Clear x</u>:

  • x = 3 × 4 / 5 = 2.4
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4 years ago
True or false: randomization allows each member of the population to have an equal probability of being selected for the sample
dsp73

Answer:

True

Step-by-step explanation:

Simple random sampling chooses at random members of the population. This allows all members an equal probability of being selected for the sample.

3 0
3 years ago
A man pays 20% of his salary as tax and has 24,000$ left. How much did he pay as tax
puteri [66]

Answer:

He paid $6,000 in taxes.

Step-by-step explanation:

His final amount after taxes is $24000.  In order to obtain this number we had to tax 20% of the total (Note that 100%-20%=80%).  In other words if he was taxed 20% he took home 80% of what he was paid.  Therefore mathematically we have:

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Since we know he was left with $24000 after taxes then:

0.8A_{pre-tax}=24000\\\\\frac{0.8A_{pre-tax}}{0.8}=\frac{24000}{0.8}\\\\A_{pre-tax}=\frac{24000}{0.8}\\\\A_{pre-tax}=30000

So originally he had $30,000.  So how much did he pay in taxes? We can calculate the difference of both pretax and after tax and we get:

$30,000 - $24,000= $6,000 taxed

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4 years ago
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adoni [48]
I'm not sure with this but I think it's B because 3 multiplied by 5 would get you a five at the end so if you divide it by that answer (245) should give you something like 81
3 0
4 years ago
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Answer:

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