Answer:
a=3
Step-by-step explanation:
a=3 because 5+4=9 and 9÷3=3
hope this helps!!
3a-4=5
put the 4 on the same side as the 5 and switch it from - to +
Ex. 3a=5+4
now add the 5 and the 4
Ex. 3a=9
now isolate the variable (thats the letter) by dividing 3a by 3, then divide the 9 by 3 simultaneously
Ex. 3a/3=a | 9/3=3
Then v
D
cuz its a 90° angle
36
45*(9/5)=81(The whole score)
81-45=36(the second half score)
