I’m not sure but I think graphing it would help I really don’t know what to say
The first system of equations has infinite solutions because you can write one equation as a linear combination of the other.The second system of equations has no solution because mathematically an incoherence results -14 = -2 / 7I attach the solutions for greater understanding.
x-4y=12; 5x-20y=60 --> infinitely many
y-7x=-14; 7y-49x=-2 --> none
Answer:683 km
Step-by-step explanation:
As we know a percentage is out of a hundred so we would start of by dividing by 100, if the percent is not a whole number then multiply both the bottom and top number by 10 for every number after the decimal point
Answer:
The missing value is 128
Step-by-step explanation:
we know that
The equation of the exponential function is of the form

where
a is the initial value (value of the function when the value of x is equal to zero)
b is the base
r is the rate
b=(1+r)
In this problem , looking at the table, we have that the number of bacteria is doubled every second
so

substitute in the formula

where
f(x) is the number of bacteria
x is the time in seconds
For x=4 sec
substitute

