Answer:
A) 4
Step-by-step explanation:
10 divided by 2 = 5
15 divided by 3 = 5
so 20 divided by 4 = 5
C- multiply both sides by 12
Answer:
A = 125 degrees and C = 35 degrees
Step-by-step explanation:
Since angles A, B, and C are all part of a triangle, we know that they add up to 180 degrees (because all angles of a triangle add to 180). So:
A + B + C = 180
We know that A = 6x - 1, B = 20, and C = x + 14, so we can plug these into the equation and solve for x:
(6x - 1) + 20 + (x + 14) = 180
7x + 33 = 180
7x = 147
x = 21
We want to find A and C, so we plug x back in:
A = 6x - 1 = 6 * 21 - 1 = 125 degrees
C = x + 14 = 21 + 14 = 35 degrees
Thus, A = 125 degrees and C = 35 degrees.
Hope this helps!
No solution exists for -3x+y=-18 and -3x+y=-6
Answer:
The price of the television before taxes is $420
Step-by-step explanation:
* Lets explain how to solve the problem
- The purchased price = cost price + taxes
- A new television set was recently purchased for the common room
in a residence hall for $436.80
- This price including tax
- The tax rate is 4%
- We need to find the price of the television before taxes
* <em>Lets solve the problem</em>
- Assume that the price of the television before tax is 100%
∵ The tax rate is 4%
∵ The price after tax = price before tax + tax
∵ The price before tax = 100%
∴ The price after tax = 100% + 4% = 104%
∵ 104% equivalent to $436.80
∴ 100 ⇒ ?
104 ⇒ 436.80
- <em>By using cross multiplication</em>
∴ ? =
∴ The price of the television before taxes is $420