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Natalka [10]
3 years ago
7

Someone help me with number 1 and 2 please

Mathematics
1 answer:
adell [148]3 years ago
7 0
1 is 25
2 is 7.42
if you need explanation please comment and let me know
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Find the zeros of the function. Enter the solutions from least to greatest.
Harman [31]

9514 1404 393

Answer:

  x = 5, x = 11

Step-by-step explanation:

Set f(x) = 0 and solve for x.

  0 = (x -8)² -9

  9 = (x -8)² . . . . . add 9

  ±√9 = x -8 . . . . . take the square root

  ±3 +8 = x . . . . . . . add 8

That is, ...

  x = 8 -3 = 5 . . . . lesser x

  x = 8 +3 = 11 . . . greater x

3 0
3 years ago
If I buy a stereo for $245 and this includes GST of 10%, what is the pre-GST price?
Ivan

Answer:  $222.73

===========================================

Work Shown:

x = pre-GST price

10% of x = 0.10x = tax amount

x + 0.10x = 1.10x = post-GST price = 245

1.10x = 245

x = 245/1.10

x = 222.7272 approximately

x = 222.73 is the price before tax.

------------

Check:

10% of 222.73 = 0.10*222.73 = 22.273 = 22.27

The tax amount ($22.27) is added to the pre-GST price to get

22.27+222.73 = 245

which matches the post-GST price mentioned.

The answer is confirmed.

Or another way to confirm the answer is to calculate this

1.10*222.73 = 245.003 = 245

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What is the slope of the line that passes through
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Answer:

what does it pass through

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2 years ago
What is 4(5a+b)−9a+3 Simplified
tatyana61 [14]
20a + 4b - 9a + 3 = 11a + 4b + 3
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84 is what percent of 212? round three decimal points before changing to a percent
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The answer is 39.62%.

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3 years ago
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