Answer:
see below
Step-by-step explanation: 5 20 15 28
3x + y = 23
3x – 2y = 8
O I should add, and the Xs will be eliminated. 3x + 3x = 6x NOT eliminated
O I should add, and the Ys will be eliminated. y + -2y = -y NOT eliminated
O I should subtract, and the Xs will be eliminated. 3x - 3x = 0x X is eliminated
O I should subtract, and the Ys will be eliminated. y - -2y = y NOT eliminated
Answer:
0.167 is rational
2/6 is rational and the other two is irrational
:)
Step-by-step explanation:
Answer:
It can be written like a*12b=1.
One solution is a=1, b=1/12=0.08(3)
answer (1;1/12)
Step-by-step explanation:
6^3+6^2=216+36=252
25^2=625
hope that helps :)
Answer: D
Step-by-step explanation:
Yeah, lets look at each of the functions. I'll refer to them as A, B, C, D, and E.
A) f(x)=x^2-16
This has two zero. x^2-16= (x+4)(x-4), which two zeroes include -4 and 4.
Here we introduce an important concept, if the function isn't a perfect square, and is a quadratic, it has two zeroes.
B) This is linear, so it obviously has 1 zero.
C) Two zeroes, because it isn't a perfect square.
D) x^2-10x+25 = (x-5)^2, so it has only one zero.
E) Not a perfect square, so two roots.