Answer:
B
Step-by-step explanation:
Plug the coordinates in the answer choices to see if they give you 18.
Option A: 5(5) - 2(3) = 25- 6 = 9. Not it
Option B: 5(4) - 2(1) = 20 - 2 = 18. Works.
It has to be B because we've already tested (5,3) in option A and it wasn't correct.
Answer:
In space, astronauts lose fluid volume—including up to 22% of their blood volume. Because it has less blood to pump, the heart will atrophy.
Step-by-step explanation:
Why is this on math?
Xy=130
y=3+x
x(3+x)=130
x²+3x-130=0
(x+13)(x-10)=0
x= -13 or 10
since the question says X and Y are positive we just dismiss-13
x=10
and y=13
Answer:
E
Step-by-step explanation:
dy/dx - sqrt(x/y) = 0
dy/dx = sqrt(x) ÷ sqrt(y)
y^½ .dy = x^½ .dx
Add 1 to the power and divide by the new power
(⅔)y^(3/2) = (⅔)x^(3/2) + c
x = 1, y = 0
0 = ⅔ + c
c = ⅔
(⅔)y^(3/2) = (⅔)x^(3/2) + ⅔
y^(3/2) = x^(3/2) + 1
At y = 73
73^(3/2) = x^(3/2) + 1
622.7122734 = x^(3/2)
x = 622.7122734^⅔
x = 72.9219527
Approximately 73
