18. all you have to to is take twenty and subtract 2 from it and you get x
Four times the sum of a number and 6.
work:
the 4 is multiplying the expression in parenthesis, so we can start with
4 times.
in the parenthesis, a number n is being added to 6.
we are multiplying this by 4, so it's 4 times the sum of a number plus six. hope this helps! :D
So you find out what two numbers add up to 5 and multiply to make -12
so since -12 is negative we know that the two numbers have to be diffarent signs (- times+=-)
also we see that the X^2 term is 2x^2 so we can use the 2
so the factored out form is
(2x+3)(x-4)
because the 2x times -4=-8x
the 3 times the x=3x
add them together and get 3x+(-8x)or 5x which is our middle term
and -4 times 3 =-12 which is our last term
Answer:
hour.
Step-by-step explanation:
Given: The number of piano solos practiced by Richard = 3
Time taken by Richard to practice each piano solo=
hour
Now, to calculate the time taken by Richard to practice all 3 piano solos, we multiply number of piano solos to the time taken to practice each piano solo, we get
The time taken by Richard to practice all 3 piano solos
hour.
Hence, The time taken by Richard to practice all 3 piano solos=
hour.