3 years ago

Is the answer C or D? Please explain as well so I can understand

1 answer:

8 0

Answer:

Step-by-step explanation:

i think it's correct and helping you

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ki77a [65]

Answer:

The variance is $\sigma ^2 =25$

Step-by-step explanation:

From the question we are told that

The sample size is n = 21

The sum of squares is $SS = 500$

Generally the variance is mathematically represented as

$\sigma ^2 = \frac{SS}{n- 1}$

substituting values

$\sigma ^2 = \frac{ 500}{21- 1}$

$\sigma ^2 =25$

4 0

3 years ago

Nady [450]

$r=\frac{cs}{d}\\\\\frac{cs}{d}=r\ \ \ \ |multiply\ both\ sides\ by\ d\\\\cs=dr\ \ \ \ \ \ |divide\ both\ sides\ by\ s\\\\\boxed{c=\frac{dr}{s}}$

6 0

3 years ago

Igoryamba

I think this is the answer

8 0

3 years ago

Lyrx [107]

1250 lost a final apex for that answer

3 0

3 years ago

Marrrta [24]

Answer:

Step-by-step explanation:

7/11 as a percent is 63.64% rounded to the nearest hundredth. 7÷11*100=63.64

8 0

3 years ago