Find two numbers, if … d Their sum is − 1 3 and their difference is 18

The numbers are -15.5 and 2.5.

Step-by-step explanation:

Let the numbers be a and b.

a + b = -13

a - b = 18

Add the two equations.

2a = 5

a = 2.5

a - b = 18

2.5 - b = 18

-b = 15.5

b = -15.5

The numbers are -15.5 and 2.5.

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.