Hope this helps! feel free to clarify
160% × ? = 40
40 ÷ 160% = 40 ÷ (160 ÷ 100) = (100 × 40) ÷ 160 = 4,000 ÷ 160 = 25.
The answer is 25.
Answer:
1/6
Step-by-step explanation:
We want to find how long it takes for the bacteria to lose half its size. We can do this by taking one point of the bacteria and finding how long it takes to go to half its size. When t=0, 9300 * (1/64)^t = 9300 * 1 = 9300 as anything to the power of 0 is 1. Therefore, we can solve for t when the end result of the bacteria is 9300/2= 4650, making our equation
4650 = 9300 * (1/64)^t
divide both sides by 9300
1/2 = (1/64)^t
First, we can tell that 2^6 = 64*. Because of this, we can say that (1/2)^6 = 1^6/2^6 = 1/64, so (1/64)^(1/6) = 1/2. We know this because
(1/2)^6 = 64
take the 6th root of both sides
(1/2) = (64)^(1/6)
. This means that t=1/6, so the bacterial culture loses 1/2 of its size every 1/6 seconds
* if this is harder to figure out, e.g. 3 and 729, we can plug (log₃729) into a calculator
Answer:
what? what is this supposed to be?
Answer:
Use distributive property to get rid of the parentheses.
Step-by-step explanation:
9+7(x-1)=4x+14
Use the order the operations (PEMDAS)
Parentheses
Exponents
Multiply
Divide
Add
Subtract
First you need to get rid of the parentheses by using distributive property.
9+7x-7=4x+14
