Answer:
(x, y) = (8, 6)
Step-by-step explanation:
given the 2 equations
2x - y = 10 → (1)
2x - 2y = 4 → (2)
rearrange equation (1) expressing y in terms of x
y = 2x - 10 → (3)
Substitute y = 2x - 10 in equation (2)
2x - 2(2x - 10) = 4
2x - 4x + 20 = 4
- 2x + 20 = 4 ( subtract 20 from both sides )
- 2x = - 16 ( divide both sides by - 2 )
x = 8
substitute x = 8 in equation (3)
y = (2 × 8) - 10 = 16 - 10 = 6
solution is (8 , 6)
Answer:
false the answer is false
Step-by-step explanation:
3x + 15< = 7 (that’s a less than or equal to sign)
Answer:
D. 19/20 mile
Step-by-step explanation:
Combine the fractions by finding a common denominator.
1/5 --> 4/20
1/4 --> 5/20
1/2 --> 10/20
4 + 5 + 10 = 19
19/20
Maria walked 19/20 of a maile