How many solutions does the system have? You can use the interactive graph below to find the answer.
\begin{cases} 3x-5y=15 6x-10y=30 \end{cases}
⎩
⎪
⎪
⎨
⎪
⎪
⎧
​

3x−5y=15
6x−10y=30
​

Answer this question only if you know the answer! 30 points and

which of the following sets of data would produce the largest value for an independent-measures t statistic? the two sample means are 10 and 20 with variances of 20 and 25 the two sample means are 10 and 20 with variances of 120 and 125 the two sample means are 10 and 12 with sample variances of 20 and 25 the two sample means are 10 and 12 with variances of 120 and 125

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.