490=10·40+15x
490=400+15x
90=15x
x=6
he worked a total of 46 hours
Answer:
number 9 is A
number 10 is C
Step-by-step explanation:
number 9, rotate triangle
number 10, add the numbers/sides
Get y alone
so
-8y=13-7x (by subtracting 7x from both sides)
now you still want y by itself so you divide by -8
leaving you with
y=-13/8 + 7/8
Answer:
5.5
Step-by-step explanation: