A. both the equations are identities , i’m pretty sure
consider first number is = x
formula,
(n / 2)(first number + last number) = sum,
7/2(x+x+6)= 945
2x+6= 945×2/7
2x+6 = 270
2x= 270-6
x=264/2= 132
Answer the smallest number is 132.
17) 146 min.
18) 5 hrs and 31 min
19) -1/6
Answer:
$28.05
Step-by-step explanation:
If you want to find how much the photo album is after the markup, you first have to find 10% of the original price. 10% of $25.50 is $2.55, so you add $2.55 and $25.50 to find the price after the markup.
Hope this helps!
The answer is 27. because 9 times 3 =27 and 3 times 9 = 27. so they are both constant of proportionality.
