Answer:
Her weight before was 100kg.
Step-by-step explanation:
This question can be solved using a rule of three.
Amy finds that her weight has decreased by 25%
So her weight is 100-25 = 75% = 0.75 of the original amount(what it was before).
Her current weight is 75kg.
Her previous weight was x, which is 100% = 1.
So
75 - 0.75
x - 1
Her weight before was 100kg.
Answer:
3
Step-by-step explanation:
I did k-12 test and got it right
kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
<span><span>Reflection in a Line
<span>Topic Index | Geometry Index | Regents Exam Prep Center</span></span>
<span><span>
</span><span>A </span>reflection<span> over a line k (notation </span><span>rk</span><span>) is a transformation in which each point of the original figure (pre-image) has an image that is the same distance from the line of reflection as the original point but is on the opposite side of the line. Remember that a reflection is a flip. Under a reflection, the figure does not change size.
</span>
The line of reflection is the perpendicular bisector of the segment joining every point and its image.</span>
<span>A line reflection creates a figure that is congruent to the original figure and is called an isometry (a transformation that preserves length). Since naming (lettering) the figure in a reflection requires changing the order of the letters (such as from clockwise to counterclockwise), a reflection is more specifically called a non-direct or <span>opposite isometry.
</span></span></span>http://www.regentsprep.org/regents/math/geometry/gt1/reflect.htm
We have that
f²{k^6/[k^4*k^3]}^-3
step 1
f²{k^6/[k^(4+3)]}^-3---------> f²{k^6/[k^7]}^-3-------> step 1 is correct
step 2
f²{k^6/[k^7]}^-3------> f²{k^(6-7)]}^-3----> f²{k^(-1)}^-3----> step 2 is correct
step 3
f²{k^(-1)}^-3------> f²{k^[(-1)*(-3)]}-----> f²{k^(3)}
therefore
Martha made a mistake in the step 3
the answer is
step 3
f²k³
