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Afina-wow [57]
3 years ago
7

R^2+6r-27 factoring quadratics

Mathematics
1 answer:
Vanyuwa [196]3 years ago
5 0

<em>Answer:</em>

<em>(r + 9)(r - 3)</em>

<em>Step-by-step explanation:</em>

<em>r² + 6r - 27 =</em>

<em>= r² + 9r - 3r - 27</em>

<em>= r(r + 9) - 3(r + 9)</em>

<em>= (r + 9)(r - 3)</em>

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The variable b varies directly as the square root of c. lf b= 100 when c=4, which equation can be used to find other combination
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Answer:

<em>b = 50√c</em>

Step-by-step explanation:

If b varies directly as the square root of c, this is expressed as;

b∝√c

b = k√c

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Given b = 100 and c = 4

100 = k√4

100 = 2k

k = 100/2

k = 50

Substitute k = 50 into the original expression:

Recall that: b = k√c

b = 50√c

<em>hence equation that can be used to find other combinations of b and c is b = 50√c</em>

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3 years ago
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Convert 41º F to degrees Celsius.
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41ºF = 5.0ºC 

<span>Use this formula to convert degrees Fahrenheit
 
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