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3 years ago

The diameter of a circle is 8 ft. Find the circumferenceto the nearest tenth.

Mathematics

1 answer:

AURORKA [14]3 years ago

6 0

Answer:

25.1 ft

Step-by-step explanation:

To solve for circumference is pretty simple. Just use the equation 2pi r (r=radius, radius is diameter divided by 2).

So essentially, apply to your calculator:

2(3.14)4=25.12

pretty simple! hope this helps!

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Is 2.72135 rational or irrational

NemiM [27]

Answer:

rational

Step-by-step explanation:

since 2.72135 is finite (has an ending), it can be written as a fraction, meaning it is rational.

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2 years ago

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Help me pls!!!!!!!!!

Dominik [7]

Answer:

$x^2+18=-9x : x = -3, x = -6$

Step-by-step explanation:

$x^2+18=-9x$

Add 9x to both sides:

$x^2+18+9x=-9x+9x$

Simplify:

$x^2+9x+18=0$

Solve with the quadratic formula:

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are:

$x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

For $a=1,\:b=9,\:c=18:\quad x_{1,\:2}=\frac{-9\pm \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1}$

$x =\frac{-9 + \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1} : -3$

$x =\frac{-9 - \sqrt{9^2-4\cdot \:1\cdot \:18}}{2\cdot \:1} : -6$

The solution to the quadratic equation are:

$x=-3,\:x=-6$

Hope I helped. If so, may I get brainliest and a thanks?

Thank you, have a good day!

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3 years ago

Fill in the missing reason in proof.

KiRa [710]

Answer:

Step-by-step explanation:

<u>As per steps given the congruent pairs are:</u>

AB and AC
BD and CD
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So two sides and included angle - it represents side-angle-side or SAS congruency theorem

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

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LekaFEV [45]

There is not enough information

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2 years ago

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