Answer:
Step-by-step explanation:
Okay, so you need to create an equation which shows that twice the sum of a number (n) and 7 is 3 times that number. So you need twice the sum of n + 7 and that will equal 3 times n.
2(n + 7) = 3n
Now, multiply
2n + 14 = 3n
2n + 14 -2n = 3n - 2n
14 = n
So the number is 14. Now you can check your answer
2(14 + 7) = 3(14)
2x21 = 42
42 = 42
Step-by-step explanation:
x° + (x - 34)° = 180°. (C-angles)
Thereforr 2x - 34 = 180 and x = 107.
x° = 107°.
(x - 34)° = 73°.
Answer:
=760 ft
Step-by-step explanation:
h=16t^2+126t
Let t=4
h = 16 (4)^2 +126(4)
h = 16*16 +126(4)
=256+504
=760 ft
Answer:
$1.25
Step-by-step explanation:
3.75 x 5 = 18.75
20-18.75 = 1.25
I think this is the right answers i am not sure tho
