The sum of two numbers is 40 and their difference is 10

15 and 25

Step-by-step explanation:

15 plus 25 equals 40,

25 minus 15 equals 10.

this could be solved algebraically using a system of equations.

Let a = the first number

Let b = the second number

Our two equations using the information given in the question:

a + b = 40

b - a = 10

Isolate for one of the variables in either equation, then plug that into the other one:

b = a + 10

a + (a + 10) = 40

Now solve for a:

2a + 10 = 40

2a = 30

a = 15

Now that you know what a is, plug it into one of the original equations and solve for b.

a + b = 40

(15) + b = 40

b = 25

And there you have it, a = 15 and b = 25.

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.