Answer:
(- 2, - 1 ), (2, 1 )
Step-by-step explanation:
Given the 2 equations
x - 2y = 0 → (1)
x² - y² = 3 → (2)
Rearrange (1) expressing x in terms of y by adding 2y to both sides
x = 2y → (3)
Substitute x = 2y into (2)
(2y)² - y² = 3, that is
4y² - y² = 3
3y² = 3 ( divide both sides by 3 )
y² = 1 ( take the square root of both sides )
y = ± 
= ± 1
Substitute these values into (3) for corresponding values of x
y = - 1 ⇒ x = 2(- 1) = - 2 ⇒ (- 2, - 1 )
y = 1 ⇒ x = 2(1) = 2 ⇒ (2, 1 )
So i take "one hundred and twenty five " to be one full numer: 125
(my alternative understanding is that 100 is a full integer and only 25 thousands, but I don't think that's what the question meant)
thousands: this means that the number will have a form of
x.xxx
(because the smallest number of this form, 0.001 is one thousandth.
so we fill it in:
0.125
and that's the answer!!
(we fill right to left: so if the number was for exmple 25, we'd have to fill it in with 0:
0.025)
The bird was 13200 yards away from its original starting point.
Answer:
50/3
Step-by-step explanation:
For x
3x-2(2+1)=4
3x-2(3)=4
3x-6=4
3x=4+6
3x=10
x=10/3
as we have to find 5x=?
5(10/3)
50/3
