Answer:
9
Step-by-step explanation:
For the given points to lie on the parabola,
a = -3 and k = 10.
An equation of a curve that has a point on it that is equally spaced from a fixed point and a fixed line is referred to as a parabola. The parabola's fixed line and fixed point are together referred to as the directrix and focus, respectively. It's also crucial to remember that the fixed point is not located on the fixed line. A parabola is a locus of any point that is equally distant from a given point (focus) and a certain line (directrix).
According to the question,
Equation of parabola : y = a + k
Points A(1,7) and B(4,-2)
For the points to lie on the parabola,
7 = a+k
7 = a + k
Similarly,
-2 = a + k
-2 = 4a + k
On solving the two equations simultaneously, we get,
a = -3
k = 10
Learn more about parabolas here:
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Answer is D. 12. I just plugged it into an equation calculator. I use the website Symbolab.
solution in attachments c:
One ton is equal to .
For example, two tons is equal to pounds, because .
The perimeter is just the sum of all its sides, in this case, 14+8+14+8 is the perimeter of that one.
now, it gets enlarged with a scale factor of 10, namely it gets blown up 10 times, so the length and the width get blown up that much, thus 10*8 and 10*14.
the new perimeter is then (10*8) + (10*14)+(10*8) + (10*14).