Answer:
The error comes between steps 1 and 2.
Step-by-step explanation:
When we combine the like terms of 4x and -5x, then we get a -x. The problem above shows a positive x, which is incorrect.
The sum of 14 and a number is 14+x
we know that this equals 17, so: 14+x=17.
Let's substract 14 from both sides:
x=17-14
x=3
so the number is 3.
Need help with what ...?.???????
Answer:
see below
Step-by-step explanation:
a) 2(x - 1) = 4 (x + 2)
Distribute
2x-2 = 4x+8
Subtract 2x from each side
2x-2x-2 = 4x-2x +8
-2 = 2x+8
Subtract 8 from each side
-2-8 = 2x+8-8
-10=2x
Divide each side by 2
-10/2 = 2x/2
-5 =x
b)(3 - x) (x + 2) = 0
We can use the zero product property
3-x = 0 x+2= 0
3-x+x=0+x x+2-2=0-2
3=x x=-2
Answer:
13 < √181 < 14.
Step-by-step explanation:
The 2 square numbers either side of 181 is 169 ( = 13^2) and 14^2.
So the answer is
13 < √181 < 14