Gabrielle is 10 years younger than Mikhail. The sum of their ages is 40. What is Mikhail's age

Mikhail is 25 and Gabrielle is 15

Step-by-step explanation:

g = (m-10) and g+m = 40

We'll substitute that first equation into the second

(m-10) + m + 40

2m - 10 = 40

2m = 50

m = 25

A) G +10 = M

B) G + M = 40

A) G -M = -10  Adding A) + B)

2 G = 30

Gabrielle is 15

Mikhail is 25

Step-by-step explanation:

3; 9 is 8 to -4

step-by-step explanation:

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.