Answer:
12
Step-by-step explanation:
Equation y=40x+420
plur in 900 to the y
900=40x+420
subtract
480=40x
divide
x=12
Hello,
Answer C x²-7≠0 ==>(x≠-√7 and x≠√7)
Answer:

Step-by-step explanation:
The given equation is 4 + 2/3 x = -5
Taking variable on one side and constants on other side, we get


The number in decimal form is given by -13.5
The number in fraction form is given as 
Step-by-step explanation:
Notice: The literal factors are all the combinations of a and b where the sum of the exponents is 4: a4, a³b, a²b², ab³, b4 ... The solution to the problem of the binomial coefficients without actually ... The upper index n is the exponent of the expansion; the lower index k indicates which term ... 1a5 + a4b + a3b² + a²b3 + ab4 + b5.
Answer:
it's 4
Step-by-step explanation:
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