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3 years ago

Corey tosses 4 fair coins. What is the probability that all four coins will land tails up?

Mathematics

2 answers:

Fed [463]3 years ago

5 0

Answer:

4/8

Step-by-step explanation:

IgorLugansk [536]3 years ago

4 0

I am almost 100 percent sure it’s 4/8

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the sum of all but one interior angle of a heptagon is 776°. what is the measure of the final interior angle?

soldi70 [24.7K]

Answer:

The final interior angle = 124°

Step-by-step explanation:

A heptagon has 7 sides. The sum of the interior angles formula:

The sum of the interior angles = (n - 2)180 where n = number of sides.

The sum of the interior angles= (7 - 2)180° = 900°

Six interior angles = 776°.

The final interior angle + six interior angle = 900°

The final interior angle + 776° = 900°

The final interior angle = 900° - 776°

The final interior angle = 124°

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2 years ago

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gavmur [86]

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4 years ago

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3 years ago

Kerry starts school at 8:30 AM today. If she gets out after her 5th class, according to the chart, what time will she leave scho

liberstina [14]

Answer: 3:45

Step-by-step explanation:

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3 years ago

How many extraneous solutions does the equation below have?

aev [14]

Answer:

A solution is said to be extraneous, if it is a zero of the equation, but it does not satisfy the equation,when substituted in the original equation,L.H.S≠R.H.S.

The given equation consisting of variable , m is

$\frac{2 m}{2 m+3} -\frac{2 m}{2 m-3}=1\\\\ 2 m[\frac{1}{2 m+3} -\frac{1}{2 m-3}]=1\\\\ 2 m\times \frac{[2 m-3 -2 m- 3]}{4m^2-9}=1\\\\ -6 \times 2 m=4 m^2 -9\\\\ 4 m^2 +1 2 m -9=0\\\\m=\frac{-12 \pm\sqrt{12^2-4 \times 4 \times (-9)}}{2\times 4}\\\\m=\frac{-12 \pm \sqrt {144+144}}{8}\\\\m=\frac{-12 \pm \sqrt {288}}{8}\\\\m=\frac{-12 \pm 12 \sqrt{2}}{8}\\\\m=\frac{3}{2}\times(-1 \pm \sqrt{2})$

None of the two solution

$m=\frac{3}{2}\times(-1 +\sqrt{2}) and , m=\frac{3}{2}\times(-1 -\sqrt{2})$ , is extraneous.

Here, L.H.S= R.H.S

Option A: 0→ extraneous

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3 years ago

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