3 years ago

Please im stuck help me !!!!!!!!

1 answer:

pogonyaev3 years ago

4 0

Answer:

$\frac{21}{ \sqrt{7} } \times \frac{ \sqrt{7} }{ \sqrt{7} } = \frac{21 \sqrt{7} }{7} = \frac{7(3 \sqrt{7} )}{7} \\ \\ = 3 \sqrt{7} = 7.93$

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rewona [7]

Answer:

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Step-by-step explanation:

4 0

3 years ago

pogonyaev

N is M reflected across the y-axis; only the signs of the x-coordinates of M and N are different.

<u>Step-by-step explanation:</u>

In question no statements are available , below statements are the required one:

N is M reflected across the x-axis; only the signs of the x-coordinates of M and N are different: N is reflected over y-axis not x-axis so, this option itself is wrong!
N is M reflected across the x-axis; only the signs of the y-coordinates of M and N are different: N-M is reflected over y-axis not x-axis , so this option is also wrong.
N is M reflected across the y-axis; only the signs of the x-coordinates of M and N are different: N-M are reflected over y-axis correct and sign of only x co-ordinate is changed as Co-ordinates are $M(-2,-2.5)$ and $N(2,-2.5)$ .Hence, this statement is correct!
N is M reflected across the y-axis; only the signs of the y-coordinates of M and N are different. N-M is reflected over y-axis , and sign of only x co-ordinate is changed not y . False statement.