Answer:
(2,-3)
Step-by-step explanation:
-2x +3y = -13
-2x -5y = 11
Multiply the second equation by -1
2x +5y = -11
Add this to the first equation
-2x +3y = -13
2x +5y = -11
--------------------
8y = -24
Divide each side by 8
8y/8 = -24/8
y = -3
Now find x
2x +5y =-11
2x +5(-3) =-11
2x-15 =-11
Add 15 to each side
2x-15+15 = -11+15
2x =4
Divide each side by 2
2x/2 = 4/2
x =2
Answer:
=−7
Step-by-step explanation:
Answer:
x=6
Step-by-step explanation:
When we multiply exponents with the same base we add the exponents
When we divide exponents with the same base we subtract the exponents
4^3 * 4^3 ÷4^3 *4^3
We will work from left to right
Multiply means add
4^(3+3) ÷4^3 *4^3
4^6÷4^3 *4^3
Now divide means subtract
4^6÷4^3*4^3
4^(6-3)*4^3
4^3 *4^3
4^3*4^3
Multiply means add
4^(3+3)
4^6
4^6 = 4^x
The bases are the same so the exponents must be the same
x=6
Answer:
D) 15/12 and 5/4
Step-by-step explanation:
Because when you cross multiply the ratios
15*4 and 12*5
making both ratios a proportion
they both = 60
X % = x/100 as a fraction
so 0.75 % = 0.75 / 100 = 75/10000 or 0.0075
so 0.75% of 560 = 560 * 0.0075 = 4.2
George was correct.
