Answer:
she can type 68 words every minute.
Step-by-step explanation:
In a minute there is 60 seconds so in 15 seconds she can type 17 words you
will do 17x4.
Answer:
So 15^6 is the same thing as 15x15x15x15x15x15
and 15^9 is the same thing as 15x15x15x15x15x15x15x15x15
so the internet speed is 3 times greater
Step-by-step explanation:
Answer:
z^2 +7z -8 = 0
Step-by-step explanation:
Let z = 3x+2. Then we can substitute z wherever we see 3x+2.
z^2 +7z -8 = 0 . . . . equivalent quadratic
__
This is easily factored to ...
(z -1)(z +8) = 0
So, the original quadratic has solutions ...
(3x +2) -1 = 0
x = -1/3
and
(3x +2) +8 = 0
x = -10/3
