The answer is <span>C.) 2
The general form of formula is
y = a </span><span>• r^x
y - the total number of bacteria after x period of time
a - the initial number of bacteria
r - growth rate
x - period of time
Let's compare:
</span>y = a • r^x
<span>y = 280 • 2^x
Since r = 2, the growth rate is C.) 2</span>
Answer:
difference means subtraction operation.
let the number be n :
arrange the equation:
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further more [ getting value of n ]
add 7 on all sides:
divide all sides by 5:
(-3) *(5 x -6 y) =(-38) *(-3)
5 * (3 x +4 y ) = 0 * 5
You will have
-15 x +18 y = 114
15 x +20 y =0
you add 2 equations together
You will have
38 y =114
y=3
Then you chance y =3 in equation 2, you will have
3 x +4 *3 =0
3 x = -12
x = - 4
You have x= -4 and y = 3
(-4,3)
Answer:
-5
Step-by-step explanation:
The formula for the axis of symmetry is -b/2a
Substitute the values into the formula: -(10)/2(1)
Now we get -10/2
This simplifies to x= -5
If you multiply 6 3/4 by 16, you get 108, which is how much rope he has in general. If he were to divide this length by 20 for 20 people, that would be 5.4, so each person would get 5.4 meters of rope.