Answer:
0.17
Step-by-step explanation:
The function can be rewritten as ...
B(t) = 9300·((1/2)^6)^t = 9300·(1/2)^(6t)
In order to multiply the number of bacteria by 1/2, the value of the exponent 6t must be equal to 1:
6t = 1
t = 1/6 ≈ 0.166667 ≈ 0.17
The culture loses half its size every 0.17 seconds.
If 30 textbooks weigh 144, you do 144/30 to calculate each unit
So the answer is 4.8
The answer is that there is a total of 60 football players and 35 baseball players
12 • 5 = 60
7 • 5 = 35
60 + 35 = 90
( before you ask where I got the 5, I tried out random numbers to multiply 12 and 7 by so that when the two products were added together they would equal 95)
The image of the room is in the attachment.
Answer: (c) 12.8 m²
Step-by-step explanation:
The area of a trapeze is calculated as:
A = 
where:
B is bigger side
b is smaller side
h is height of trapeze
From the image, we have:
B = 3.8m
b = 2.6m
h = 4m
A = 
A = (3.8+2.6).2
A = 12.8
The area of the trapeze is A = 12.8 m².
Answer:
It should be B, 180 cm
Step-by-step explanation:
x = circumference of circle D
18/360 = 9/x
9*360 = 18x
9*360/18 = x
x = 180
