We know that
the equation of the parabola is of the form
y=ax²+bx+c
in this problem
y=−1/4x²<span>−x+3
where
a=-1/4
b=-1
c=3
</span><span> the coordinates of the focus are
</span>
(-b/2a,(1-D)/4a)
where
D is the discriminant b²-4ac
D=(-1)²-4*(-1/4)*3-----> D=1+3---> D=4
therefore
x coordinate of the focus
-b/2a----> 1/[2*(-1/4)]----> -2
y coordinate of the focus
(1-D)/4a------> (1-4)/(-4/4)---> 3
the coordinates of the focus are
(-2,3)
X+15=3. And if you don’t mind, please look at my recent mathematics question because I am very desperate for an answer
Answer:
Step 1 : <u>1000</u> * 2 * 9
Step 2 : <u>1000</u> * 18
Step 3 : <u>18000</u>
Step-by-step explanation:
<u>Step 3</u>
2000 * 9 = y ⇒ 18000
y = <u>18000</u>
<u>Step 1</u>
Solving for this, we have:
Let a be the unknown variable
a * 2 * 9 = 18000
18a = 18000
a = <u>1000</u>
Therefore, when we multiply 1000 by 2 & 9, we have 18000
<u>Step 2</u>
Solving for this, we have:
Let a be the unknown variable
a * 18 = 18000
18a = 18000
a = <u>1000 </u>
Therefore, when we multiply 1000 by 18, we have 18000
<u>We therefore see that the value of the unknown variables (a, y) is shown above & the product of all the steps (step 1 - 3) is 18000</u>
The answer is 5 square root of 5.
Answer:
The ratio of the areas would be the ratio of the side lengths squared.
Say the ratio of the side lengths is 1:2, the ratio of the areas would be 1:4. If the ratio of the sides were 2:3, the ratio of the areas would be 4:9.
Hope this helps
