Part A: 3x + 15 = 5x - 25
Part B: x = 20
A sixth is less than one half.
1/6 = 0.16
1/2 = 0.5
Answer:
Seth watched TV for 6 3/4 hours last week.
Step-by-step explanation:
Let x be the number of hours he watched TV last week.
(2/3)x = 4 1/2 hrs. Solve for x by mult. both sides by (3/2):
(3/2)(2/3)x = (3/2)(9/2)
Then: x = 27/4 hours, or 6 3/4 hours.
Seth watched TV for 6 3/4 hours last week.
9514 1404 393
Answer:
-361
Step-by-step explanation:
Your calculator can tell you the result. It is -361.
Start with the inner parentheses and work outward. Do multiplication and division in the order shown, left to right, before addition or subtraction.
-3[2/6+8{-9/3(8-5*3)-6}]
= -3[2/6+8{-9/3(8-15)-6}]
= -3[2/6+8{-9/3(-7)-6}]
= -3[2/6+8{-3(-7)-6}]
= -3[2/6+8{21-6}]
= -3[2/6+8{15}]
= -3[1/3+8{15}]
= -3[1/3+120]
= -3[361/3]
= -361
Answer:
At 2:00 there will be 38,400 bacteria.
Step-by-step explanation:
600/150 = 4
2400/600 = 4
So, the bacteria quadruples every half hour.
At 1:30, there will be 2400*4 = 9600.
At 2:00, there will be 9600*4= 38400