Answer:
Nadia is incorrect, please check explanations for the correction to her work
Step-by-step explanation:
Here, we want to validate the wok of Nadia
Let the number be n
5 times the number is 5 * n = 5n
Difference between 5n and 3 less than twice the number
3 less than twice the number is 2n-3
So it should be 2n-3 ;
The solution is thus;
5n - (2n-3) = 18
5n - 2n + 3 = 18
3n + 3 = 18
3n = 18-3
3n = 15
n = 15/3
n = 5
First, since its $1 per fry, do 19.96-4 = 15.96, then divide that by four because of the number of days, and the big mac cost will be 3.99 :)
Hello there!
Let's use foil.
First: 4x * 2x = 8x^2
Outside: 4x * -9 = -36x
Inside: -7 * 2x = -14x
Last: -7 * -9 = 63
Now, let's combine these.
8x^2 - 36x - 14x + 63
Finally, we can simplify this
8x - 50x + 63
I hope I helped!
Let me know if you need anything else!
~ Zoe
Answer:
y+2=3(x-1/9)
Step-by-step explanation:
y-y1=m(x-x1)
y-(-2)=3(x-1/9)
y+2=3(x-1/9)
Ab+ac=a(b+c)
a is a common factor to both
find greatest common factor
factor each
18x²=2*3*3*x*x
6x=2*3*x
gcf=2*3*x=6x
so
18x²+6x=6x(3x)+6x(1)=6x(3x+1)
