Answer:y = 1.5x + 2.5
Step-by-step explanation:
Hello there. To solve this question, we need to remember some properties on powers.
(-25)^(-4) * (5^(-3))^(-2)
To start, remember a^(-n) = 1/a^n, for a not equal to 0. Also, (ab)^n = a^n * b^n and (a^b)^c = a^(b*c)
Such that we have:
(-1)^(-4) * 25^(-4) * 5^((-3)*(-2))
1/(-1)^4 * (5^2)^(-4) * 5^6
Since (-1)^4 is equal to 1, we get:
5^(2*(-4)) * 5^6
5^(-8) * 5^6
Knowing that a^b * a^c = a^(b + c), we get:
5^(-8+6)
5^(-2)
Applying the first rule, we get:
1/5^2
1/25.
Answer:
it c
Step-by-step explanation:
Plug in 3x-5 to the second equation for every y value. (This is substitution)
2x +6(3x-5)=20
2x+18x-30=20
20x=50
x=2.5
Then solve the first equation with your x value
y=3(2.5)-5
y=7.5-5
Y=2.5
To check plug the numbers into both
EQ 1: 2.5=7.5-5
EQ 2: 5+15=20
No he doesn't have enough to buy everyone including himself to buy the concert tickets. (188-19)x6 comes out to be $1,014 even.