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belka [17]
3 years ago
13

EXPERTS/ACE/GENIUSES PLZ HELP QUICK!!:) THANKS.

Mathematics
1 answer:
Elza [17]3 years ago
3 0
V = 4/3<span>πr^3
V = 4/3 (3.14)(8^3)
V = 4/3 (3.14)(512)
V = 2143.57

answer is D
2143.57 cm^3</span>
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Step-by-step explanation:

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Select all of the following that are quadratic equations.
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Answer:

1. x² + 3x - 5 = 0

2. x² - x = 3 x + 7

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Step-by-step explanation:

A Quadratic equation takes the form;

ax² + bx + c = 0

a, b, c are constants and a cannot be 0.

Options 1 fits this;

x² + 3x - 5 = 0

Option 2 fits this as well;

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3 years ago
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Graph is attached below.

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3 0
3 years ago
Isabella is making cookies. The recipe requires 3/4 of a cup of flour and 1/2 of a cup of sugar.
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Express 0.484848..... in p/q form​
cupoosta [38]
<h3>Answer:  16/33</h3>

It's in p/q form where p = 16 and q = 33.

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

Work Shown:

x = 0.484848.....

100x = 48.4848.....

I multiplied both sides by 100 to move the decimal over 2 spots. Both decimal values for x and 100x have an infinite string of "48"s repeated after the decimal point. When we subtract, those infinite strings will cancel out

100x - x = 99x

48.4848..... - 0.484848..... = 48

So after subtracting straight down, we have the new equation 99x = 48 which solves to x = 48/99

Divide both parts by the GCF 3 to fully reduce

48/3 = 16

99/3 = 33

Therefore, x = 48/99 = 16/33 = 0.484848...

I recommend using a calculator to confirm that 16/33 = 0.484848...

Side note: your calculator may round the last digit, but this is of course rounding error

7 0
3 years ago
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