Hey there :)
We have two equations:
3a + 2b = 7
2a + 2b = 9
We need to solve simultaneously to find the values of a and b
eq.1 3a + 2b = 7
eq.2 ( 2a + 2b = 9 ) x -1 ) multiply by -1 to cancel 2b
3a + 2b = 7
- 2a - 2b = -9 ( Add both together )
-------------------
a = - 2 Substitute the value you found for a in a in order to find b
3( - 2 ) + 2b = 7 2( - 2 ) + 2b = 9
- 6 + 2b = 7 OR - 4 + 2b = 9
2b = 13 2b = 13
b =
b =
20 and 0 are your answers
Answer:
The ratio of the circumference of a circle to its diameter is approximately 3.14.
Answer:
a. 24.5 $
b. 10.5 $
c. 7/10
Step-by-step explanation:
Given the original price of the sweater is: $ 35.
a) If you pay only
of the price, then the actual amount paid is:
= 24.5 $.
b) Total amount Saved = Actual price - Price you paid
Total Amount Saved = 
= 10.5 $.
c) Fraction of the original price saved = Total amount Spent/Actual Price
Total amount Saved = 
= 