<span>The first number 2.5 is called the coefficient. It must be greater than or equal to 1 and less than 10.</span>
<span>The second number is called the base . It must always be 10 in scientific notation. The base number 10 is always written in exponent form. In the number 2.5 x 1011 the number 11 is referred to as the exponent or power of ten.</span>
so that equals <span>166560 if you wrote the problem the way i see it</span>
Answer:
450 per month
Step-by-step explanation:
5000-1400=3600
3600/8=450
Since Peter already has 1400 dollars saved you can subtract that form the total amount and since he is trying to get the rest in eight months you just divide the difference by eight.
Let x and y be the two numbers
Saying "The sum of two numbers is 27" means x+y = 27. The term "sum" is the result of adding. So the first equation is x+y = 27
The second equation is y = x+3 where we assume that y is the larger number of the pair.
So your system of equations will be
x+y = 27
y = x+3
Use substitution to solve this system.
x+y = 27
x+( y ) = 27
x + (x+3) = 27 ... notice how y has been replaced with x+3 (since y = x+3)
x+x+3 = 27
Solve for x and then use this to find y. I'll let you finish up.
If you need more help, then please let me know.