Find the digit in the tenths place of 25.391
2 answers:
Answer:
Step-by-step explanation:
It is important to know that, in order to find the digit in the tenth place of a decimal number, you need to indentify the first digit located to the right of the decimal point.
Therefore, knowing this and having the decimal number provided in the exercise:
You can observe that the first digit to the right of the decimal point is 3.
Therefore, the digit in the tenths place of ths decimal number is:
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A reflection about the x axis, about y=0, is the mapping (x',y')=(x,-y) so
A dilation of 2 is the mapping (x'',y'')=(2x', 2y')
So
We can rewrite that without the primes and combine the powers of 2.
Let's graph these and see if we're close,
Plot y= (1/4)^x, y= - (1/4)^{x}, y = - 2^{1-x}
