20x26=520
The answer is D 520.
Hope it helps.
Okay. This is a little tricky because your question isn't quite as clear as I would like it to be, but I can work with it nevertheless. I am going to assume that you are asking how many tenths you would get when you add 0.12 and 0.9, which are the equivalent to 12 tenths and 9 tenths. The answer to this would be 0.21, or 21 tenths, or if you want to get really technical and use the absolute correct term, 21 hundredths. If this answer was not clear, please ask! Happy home-working!
Answer:
14. x = 16; y = 23
15. x = 9; y = 13
Step-by-step explanation:
14. (4x + 4) = (7x - 44) (alternate exterior angles are congruent)
4x + 4 = 7x - 44
Collect like terms
4x - 7x = -4 - 44
-3x = -48
Divide both sides by -3
x = -48/-3
x = 16
39° + (8y - 43)° = 180° (consecutive exterior angles are supplementary)
39 + 8y - 43 = 180
Add like terms
-4 + 8y = 180
Add 4 to both sides
8y = 180 + 4
8y = 184
Divide both sides by 8
y = 184/8
y = 23
15. (15x - 26)° = (12x + 1)° (alternate exterior angles are congruent)
15x - 26 = 12x + 1
Collect like terms
15x - 12x = 26 + 1
3x = 27
Divide both sides by 3
x = 27/3
x = 9
28° + (12x + 1)° + (4y - 9)° = 180° (sum of interior angles of ∆)
Plug in the value of x
28 + 12(9) + 1 + 4y - 9 = 180
28 + 108 + 1 + 4y - 9 = 180
Add like terms
128 + 4y = 180
Subtract 128 from each side of the equation
4y = 180 - 128
4y = 52
Divide both sides by 4
y = 52/4
y = 13
N represents the number of payment periods. Supposing you arranged for a mortgage to buy a house; you'd have to make n payments of so many dollars per month to pay off the mortgage (the total amount due,with interest).
If the annual interest rate were r, and payments were due monthly (12 payments per year), then the monthly interest rate would be r/n = r/12. The typical 30-year mortgage involves monthly payments over a 30 year time span. This comes to 360 monthly mortgage payments.
