Answer:
x = 10 and y = 5
Step-by-step explanation:
We are given:
the system of equations
-4x+11y=15... Equation 1
x=2y....... Equation 2
We substitute 2y for x in Equation 1
-4(2y) + 11y = 15
-8y + 11y = 15
3y = 15
y = 15/3
y = 5
Solving for x
2y = x
2(5) = x
10 = x
Therefore,
x = 10 and y = 5
Answer:
4n+13
Step-by-step explanation:
combine like terms.
Answer:
257.8°
Step-by-step explanation:
rad × 180/π = °
4.5*180=810
810/π=257.8
Sin∠R = ST/RS ⇒ ST = RS * sin40° = 9 * 0.6428 ≈ 5.8
-2x + x/4 + 1 = 5
-2x + x/4 = 4
-7x/4 = 4 (By using the same denominator)
x = -16/7
