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makvit [3.9K]
2 years ago
8

Every positive real number has a positive and a negative square root, the ________ root is called the principal root. *

Mathematics
1 answer:
fomenos2 years ago
5 0

9514 1404 393

Answer:

  B) positive

Step-by-step explanation:

For even-index roots, which may be either positive or negative, the <u> </u><u><em>positive</em></u><u> </u> root is called the principal root.

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Step-by-step explanation:

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3 0
1 year ago
Solve for f (-3) for f (x) = 1 -x<br> f (-3) = [ ? ]
Lostsunrise [7]
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3 0
3 years ago
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A compact disc player costs £50 plus 17 1/2% Vat. Calculate the total cost of the compact disc player
Shtirlitz [24]
With Calculator:
To work out the multiplier, take the percentage, divide by 100 and add 1
17.5% / 100 = 0.175
1 + 0.175 = 1.175
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First work out easy percentages of 50 (if needed use previous answers (such as 10) to work out smaller percentages (such as 5%))
100% = 50
10% = 5
5% = 2.5
2.5% = 1.25
10% + 5% + 2.5% = 17.5%
5 + 2.5 + 1.25 = £8.75
Add this on to the original price:
£50 + £8.75 = £58.75

The total price, including VAT, is £58.75
7 0
2 years ago
On a coordinate plane, a parabola opens up. It goes through (negative 6, 0), has a vertex at (negative 4, negative 4), and goes
dybincka [34]

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The domain is all real numbers

The function is negative over (-6,-2)

Step-by-step explanation:

Its right

8 0
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