2 years ago

What is the diameter of a circle with a radius of 7 inches

Mathematics

1 answer:

In-s [12.5K]2 years ago

7 0

Answer:

Step-by-step explanation:

the diameter is the radius multiplied by 2

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What are the roots of the quadratic equation x2+2x=-5

stiks02 [169]

Answer:

x = -1 +/-2i

Step-by-step explanation:

Write the equation in standard form to find the roots, also known as the solutions, zeros, or x-intercepts, of the quadratic.

x² + 2x + 5 = 0

Use the quadratic formula by substituting a= 1, b = 2 and c = 5.

$x = \frac{-2 +/- \sqrt{(-2)^2 - 4(1)(5)} }{2(1)} = \frac{-2 +/-\sqrt{4 -20 } }{2} = \frac{-2 +/-\sqrt{-16 } }{2} = \frac{-2 +/-4i }{2} = -1 +/-2i$

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3 years ago

What is the least common multiple of 4 and 10? 02 0 4 20 40

viktelen [127]

Answer: 4 I think

Step-by-step explanation:

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2 years ago

Read 2 more answers

What’s the length of the hypotenuse?

denis23 [38]

a² + b² = c²

9² + 12² = c²

81 + 144 = c²

225 = c²

15² = c²

15 = c

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2 years ago

Anybody know the answer to this

Phoenix [80]

Answer:

$x = 2$

Step-by-step explanation:

The blue line represent the full line length.

We can add the parted black segments together and set it equal to the line.

$11 + 6x - 2 = 6x + 9$

$10x + 1 = 6x + 9$

$10x = 6x + 8$

$4x = 8$

$x = 2$

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2 years ago

Subtract and simplify (y^2 – 3y – 5) - (-y^2 – 7y+4)

polet [3.4K]

It would be 2y^2+4y-9

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2 years ago