Answer:
Step-by-step explanation:
mP=5x-14
mQ=x-5
mR=2x-9
we know that all the angles in a triangle= 180
that means (5x-14)+(x-5)+(2x-9)=180
5x-14+x-5+2x-9=180 we add the variables and the numbers
8x=180+28
8x=108
x=26
mP=130-14=116
mQ=26-5=21
mR=43
-16t^2+400=0
16t^2=400
take square root on both sides.

4t=20
t=20/4
t=5
86.
Fatima has 40
Nora has “6 + (40 x 2)”
6+(80) = 86
Answer:
Exponential equations
Step-by-step explanation: