49x^2 - 9 = 0
As there is no x term, we can pretty much guess we have a situation where we factlrise by something known aa difference of two squares, so to factorise it:
49 = 7^2
9 = 3^2
x^2 = (x)^2
so...
(7x - 3)(7x + 3) = 0
7x - 3 = 0 7x + 3 = 0
x = 3/7 x = -3/7
Find the average value:
40 minutes + 50 minutes = 90 minutes
90 minutes/2 = 45 minutes
Together it will take them 45 minutes to clean the house
Answer:
the answer is 15 because you have to do the problem in the parentheses first then multiply by 5
X = 9
Add both values 7 + 2 = 9, which is x.
9 - 2 = 7.
Answer:
Hello :) 12345678910
Step-by-step explanation:
