3x = 21, then x = ? please help i dont really understand and te answer choices are 7, 18, 6
2 answers:
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To write 
as a terminating decimal we will turn this fraction to a decimal. To do this we will divide the numerator by the deliminator and the result will be the decimal.Then we will check if it is a terminating decimal or repeating decimal. Lets do it:-
78 ÷ 25 = 3.12
3.12 is a terminating decimal.
So, as a terminating decimal is 3.12.
Hope I helped ya!!
78 ÷ 25 = 3.12
3.12 is a terminating decimal.
So,
Hope I helped ya!!
<h3>Answer: Choice C</h3>
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Explanation:
The x coordinate of the preimage point Q is x = 6.
The x coordinate of the image point Q' is x = 21.
The ratio of image over preimage is 21/6 = (3*7)/(3*2) = 7/2
You'll get this same value if you do the same steps with the y coordinates.
Therefore, the scale factor is 7/2 and the dilation rule is
Note: 7/2 = 3.5