Help plss i really need help no bots

2.solutions  possible answers=15

Step-by-step explanation:

hypotenuse theorem states that a2=b2=c2=hypotenuse squared

   form a variable

so in this case a2= 9x9=81

                          b2=12x12=144

we do not know the measurement of c

 so... add

(144=81)=225

square root = 15

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000