Answer:
7x
Step-by-step explanation:
(5.2 + 6.8)x - (25 ÷ 5)x
12x-(25divied by 5)x
12x-5x
7x
Answer:
-2a + 20b - 2c
Step-by-step explanation:
(6a + 5b + 4c) + (–6c + 15b) + (–8a) = 6a + 5b + 4c - 6c + 15b - 8a
= 6a - 8a + 5b + 15b + 4c - 6c
= -2a + 20b - 2c
2x - 11 >_ 5
To solve for x, we need to get 2x by itself and then simplify.
Add 11 to both sides.
2x >_ 16
Divide both sides by 2 to get x.
x >_ 8 is your solution.
I hope this helps!
Answer:
k = 
Step-by-step explanation:
Using the rules of logarithms
log x - log y = log(
)
log a = log b ⇒ a = b
Given
logk - log(k - 2) = log25, then
log (
) = log25, thus
= 25 ( multiply both sides by (k - 2)
25(k - 2) = k
25k - 50 = k ( subtract k from both sides )
24k - 50 = 0 ( add 50 to both sides )
24k = 50 ( divide both sides by 24 )
k =
= 
8 - 2 = 6
6 - 1 = 5
9 x 5 = 45