Maria is 7 years older than her brother robert and in 2 years her age will be four times what robert’s age was three years ago. find their present ages.

Robert is 7 years old and Maria is 14 years old.

Step-by-step explanation:

You can use 2 variables: m and r and write 2 equations:

m = r +7

m + 2 = 4( r -3)

So 3 * r = 21 or r= 7

here you hope this .

step-by-step explanation:

hypotenuse = √(15² + 8²)

=  √(225 +64)

=  √(289) = 17

sin(x) = cos(y) = 8/17

they are identical so long as you are doing the sine of one angle and the cosine of the only other angle that isn't the right angle.

yes

step-by-step explanation: