Alex has three times as much money as jennifer. jennifer has $12 less than shannon. together they have $91. how much money does alex have?

The amount of money that Alex has is $47.4

Step-by-step explanation:

Let

x> amount of money that Alex has

y> amount of money that Jennifer has

z> amount of money that Jennifer Shannon has

we know that

x+y+z=91 > equation A

x=3y > equation B

y=z-12 > z=y+12 > equation C

substitute equation B and equation C in equation A and solve for y

(3y)+y+(y+12)=91

5y=91-12

y=79/5

y=$15.8

Find the value of x

x=3y > x=3(15.8)=$47.4

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.

im pretty sure it would be 5 am, hope that , and give brainliest and guys if this is right then press the button and give 5 stars