2 years ago

If the radius of a circle is 15 cm, what is the diameter?

Mathematics

2 answers:

attashe74 [19]2 years ago

5 0

The answer is the second answer, 30 cm

krok68 [10]2 years ago

3 0

The answer is 30 cm. Radius is half of a diameter.

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Solve each quadratic equation by completing the square. <br> 6x2 – 28x = - 16

Nataly_w [17]

Answer:

<h3> There is no real solution</h3>

Step-by-step explanation:

$6x^2-28x = - 16\\\\6x^2-28x + 16=0\\\\3x^2-7x+8=0\\\\9x^2-21x+24=0\\\\(3x)^2-2\cdot3x\cdot\frac72+(\frac72)^2-(\frac72)^2+24=0\\\\(3x-\frac72)^2-\frac{49}4+24=0\\\\(3x-\frac72)^2-12\frac{1}4+24=0\\\\(3x-\frac72)^2+12\frac{3}4=0\\\\(3x-\frac72)^2=-12\frac{3}4$