Find the missing number: 8.4(1.5 + 2.3) = 12.6 +

The required number is 19.32

Step-by-step explanation:

Consider the provided expression.

Let the missing number is x.

Add the numbers as shown.

Open the parentheses.

Subtract 12.6 from both the sides.

Hence, the required number is 19.32

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.