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3 years ago

A ballet company has 30 dancers. They want to randomly sample 8 dancers to complete a survey.

Mathematics

2 answers:

Y_Kistochka [10]3 years ago

8 0

Answer:

A, C, and D

Step-by-step explanation:

B is not a random sample.

FinnZ [79.3K]3 years ago

4 0

Answer: stripers are cool

Step-by-step explanation:

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Rzqust [24]

Answer:

$\frac{180}{147}$

Step-by-step explanation:

Simplify $(\frac{3}{-7} - \frac{11}{21} )$

$=> \frac{(-3 \times 3) - 11}{21}$

$=> \frac{-9 - 11}{21}$

$=> \frac{-20}{21}$

Find the additive inverse of $\frac{-20}{21}$ by using its property - <em>"Sum of a number & its additive inverse is always zero". </em>Assume that 'x' is an additive inverse of $\frac{-20}{21}$ .

$=> x + \frac{-20}{21} = 0$

$=> x = 0 - (-\frac{20}{21}) = \frac{20}{21}$

Simplify $(\frac{9}{5} \div \frac{7}{5} )$

$=> \frac{9}{5} \times \frac{1}{\frac{7}{5} }$

$=> \frac{9}{5} \times \frac{5}{7}$

$=> \frac{9}{7}$

Now, find the product of $\frac{9}{7}$ & $\frac{20}{21}$

$=> \frac{9}{7} \times \frac{20}{21}$

$=> \frac{180}{147}$

3 0

3 years ago

PLZZ help ZOOM IN THE SEE IT CLEAR easy math problem

9966 [12]

Answer:

$\large\boxed{\sqrt{16}}$

Step-by-step explanation:

$\sqrt{15}\ \text{is irrational number}\\\\\sqrt{21}\ \text{is irrational number}\\\\\sqrt{22}\ \text{is irrational number}\\\\\sqrt{16}\ \text{is rational number because}\ \sqrt{16}=4$

3 0

3 years ago

What’s this music notes name help me please

juin [17]

Answer:

1 e

2 b

Step-by-step explanation:

4 0

3 years ago

Prove that: tan20+4sin20 =\sqrt{3}

GenaCL600 [577]

Answer:

the answer is 24

Step-by-step explanation:

applyourknowledge

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3 years ago

I have no idea how to do this.

Viktor [21]

A) the perimeter of a triangle is the bottom plus the left slanty side plus the right slanty side, but you need the bottom in ft so that would be 6 ft. the perimeter is 13 ft

b) 1 yard

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3 years ago

Read 2 more answers