(9x)/2 = 67 should be your answer. Hope this helps!
10 over the power of negative 4
Answer:
Step-by-step explanation:
y = -2/3 x multiply both sides the first equation by 6
6y = -4x Add 4x to both sides.
6y + 4x = 0
<u>-9y +4x = - 40 </u> Subtract the bottom equation
15y = - 40 Divide by 15
y = -40/15
y = - 2.7
======================
6y = -4x
6*(-2.67) = -4x
-16 = - 4x
x = - 16/-4
x = 4
Answer:
D) f(x) = 5(4)ˣ
Explanation:
(x, y) = (2, 80)
Check by inserting x = 2
A) y = 4(x)⁵ = 4(2)⁵ = 128
B) y = 5(x)⁴ = 5(2)⁴ = 80 - passes
C) y = 4(5)ˣ = 4(5)² = 100
D) y = 5(4)ˣ = 5(4)² = 80 - passes
An exponential equation is in a(b)ˣ format, so only f(x) = 5(4)ˣ is an exponential equation which passes the point (2, 80)
N/100*260=39
260n=3,900
n=3,900/260
=(390*10)/(26*10)
=390/26
=15
39 is 15% of 260.
