Answer:
Down
Step-by-step explanation:
As the lines of the parabola point down, the parabola opens down.
Answer:
2 x 20^2
Step-by-step explanation:
I did it on paper and looked it up to make sure
Given
Height (length) of the anchor dropped from the boat = 75 feet
Distance of the treasure from the anchor = 40 feet
Solution
The dropped at the bottom makes an angle of 90 degree . Therefore making an right triangle with the chest and boat
By Pythagoras theorem
AC^2 = AB^2 + BC^2
(AC = distance of the treasure from the boat
AB = height of the anchor dropped from the boat
BC = the distance of treasure from the anchor)
AC^2 = 75^2 + 40^2
AC^2 = 5325 +1600
AC^2 = 6925
AC = 25 * (under root 11)
Therefore they have cover a distance of 25 * (under root 11)
Answer:
X=-1
Y=-8
Step-by-step explanation:
8x+y=-16
3x-y=5
11x=-11
x=-1
8x+y=-16
8(-1)+y=-16
-8+y=-16
y=-16+8
y=-8
<h2>
<em><u>Or</u></em> </h2>
3x-y=5
3(-1)-y=5
-3-y=5
-y=5+3
-y=8
y=-8
Yes, it's rational.
If the digits after the decimal point terminate, then the number is
-1.3535353 = - 13,535,353/10,000,000
If they don't stop, then let <em>x</em> be the number,
<em>x</em> = -1.353535...
Multiply <em>x</em> by 100 to move the decimal point two positions to the right:
100<em>x</em> = -135.353535...
Subtract <em>x</em> from 100<em>x</em> to eliminate the fractional part, then solve for <em>x</em> :
100<em>x</em> - <em>x</em> = -135.353535... - (-1.353535...)
99<em>x</em> = -135 + 1
99<em>x</em> = -134
<em>x</em> = -134/99
