3 years ago

Help me. its confusing

Mathematics

1 answer:

kvasek [131]3 years ago

4 0

Add 300 and then will still be confused

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The general form of the equation of a circle is x^2+y^2−4x−8y−5=0.

lakkis [162]

X² - 4x + y² - 8y = 5

Complete the square:
x² - 4x + (4) + y² - 8y + (16) = 5 + (4) + (16)
→ (x - 2)² + (y - 4)² = 25

Center: (2,4)
radius: √25 = 5

5 0

2 years ago

Please help me with this question I’m so confused

zavuch27 [327]

$s = ut + \frac{1}{2} a {t}^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2) {( \frac{1}{2}) }^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2)( \frac{1}{4} ) \\ s = 5 + ( - 1)( \frac{1}{4} ) \\ s = 5 + ( - \frac{1}{4} ) \\ s = 5 - \frac{1}{4} \\ s = \frac{20}{4} - \frac{1}{4} \\ s = \frac{19}{4}$