Answer:A
Step-by-step explanation: U need to show us the box next time though.Luckly i had the same test.
Call b the amount of babysitting hours and 5 the amount of gardening hours.
10b+5g=80
b+g=12
Subtract 5 times the second equation from the first to get:
5b=20
Thus, b=4. g=12-4, or 8. Therefore, Sarah spends 4 hours babysitting and the rest gardening.
Answer:
108 m/s
Step-by-step explanation:
Given,
Initial velocity ( u ) = 3 m/s
Acceleration ( a ) = 15 m/s^2
Time ( t ) = 7 seconds
To find : Final velocity ( v ) = ?
Formula : -
v = u + at
v
= 3 + ( 15 ) ( 7 )
= 3 + 105
= 108 m/s
I hope this helps you
6x+15=3x+21
3x=6
x=2