Answer:
n-7=2
Step-by-step explanation:
We can start with one side, which is: seven less than a number
Since the number is n, seven less than it is n-7
The other side 2, as we can see after the word is
The equation, therefore, is
n-7=2
Answer: 
Step-by-step explanation:
n(gold colored coins) = 10
n(silver colored coins) = 6
Total number of coins = 16
since there is replacement , the probability she selects 2 silver colored coins will be :
x
=
x 
= 
Therefore : the probability she selects 2 silver colored coins is 
Consider the expression

To factorize the expression in the denominator we use difference of squares:

To factorize

we use the following method:

where a, b are 2 numbers such that a+b= -1, the coefficient of x,
and a*b= -6, the constant.
such 2 numbers can be easily checked to be -3 and 2
(-3*2=6, -3+2=-1)
So



for x>2

thus
for x>2,

Answer:
for x>2

, (but the expression is never 0)
The rate of change in this situation is 3 to 1. Every hour you spend running you are able to advance three miles. 2 hours = 6 miles 3 hours = 9 miles 4 hours = Mindblown+ 12 miles.
Hope this Helps! :)
Answer:
<h2>-5z-6</h2>
Step-by-step explanation:
-1/4 x 20z = -5z
24 x -1/4 = -6
So we have -5z-6. So the expression equivalent to 1/4(20z+24) is -5z-6.