2 years ago

I need help plzzzzzzzzz

Mathematics

1 answer:

Diano4ka-milaya [45]2 years ago

6 0

You need to create a right triangle and use a^2+b^2=c^2 to find the hypotenuse

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The spinner for a board game has eight colors the arrow can land on. What are the degrees of freedom for a goodness-of-fit test

Juliette [100K]

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

Number of colors that the arrow can land on = 8

We need to find the degrees of freedom for a goodness of fit test of the fairness of this spinner.

As we know that degree of freedom is 1 less than the size of sample.

So, Mathematically, it is expressed as below:

So, Degree of freedom would be

$v=n-1\\\\v=8-1\\\\v=7$

Hence, Option 'c' is correct.

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2 years ago

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frozen [14]

$\sqrt{-4}$ can also be written as 2i
where i = √-1

$\frac{2i}{4-2-3i} = \frac{2i}{2-3i}$

Rationalizing denominator,

$\frac{2i(2+3i)}{(2-3i)(2+3i)} = \frac{4i-6}{4+9} = \frac{4i-6}{13}$

8 0

2 years ago

I’m confused on this one

Digiron [165]

first, you would find the sum of all the other angles.

85+115+50 = 250

knowing that the circumference of a circle is 360, you can subtract 250 from 360. which leaves you with 110. hopefully this is correct

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2 years ago

Mr. Thompson's sixth-grade class is competing in the school field day. There are 16 boys and 12 girls in his class. He divided t

slamgirl [31]

There are 3 girls on each team and 4 boys on each team.

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3 years ago

Use the figure for exercises 1-4<br><br> Name the intersection of plane S and line j

torisob [31]

Right angle i think

90 degree angle is right angle so jus Measure it

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2 years ago