Answer:
Lucy: 10
Daniel: 37
Step-by-step explanation:
Let Daniel's age be d, and Lucy's age be l.
We can set up a system of equations.
d = 7 + 3l
2d-5l = 24
We can subsitute the value of d from the first equation into the second equation.
2*(7+3l)-5l = 24
Distribute:
14 + 6l - 5l = 24
Combine like terms:
l = 10
Plug this value back into the first equation:
d = 7 + 3*10
d = 37
Answer:
C
Step-by-step explanation:
1 in= 2.54 cm
3in=7.62 cm
5in= 12.7cm
7in = 17.78 cm
7.62+12.7+17.78=38.1
Since the bases are all 13, keep the base and add the powers.
13^(-11 + 16 + -3 + 4 + -5)
13^1 = 13
Answer:
42
Step-by-step explanation:
To fine the value of the expression 4m-6 when m = 12, we can plug our value for x (12) into or expression, and then simplify.
So first,
4(12) - 6
Multiply our 4 and 12 ==>
48 - 6
Now subtract the 6 ==>
42
And we have our answer!
Hope this helped!
Answer:
Step-by-step explanation:
i just did this problem wrong and it showed me the correct answer