5x + 10x = 180
15x = 180
X = 12
5 x 12 = 60
10 x 12 = 120
The angles are 60° and 120°
Answer:
all work is pictured and shown
The answer is D if you graph it it falls into those equations in the intersection they make
Answer: 24 times
Step-by-step explanation:
volume of cone: (1/3)×5^2×π×10=250π/3 cm^3
volume of cylinder: 10^2×π×20=2000π cm^3
2000π/(250π/3 )=2000π×(3/250π)=24
Answer:
a) x = 1 , y = 3
Step-by-step explanation:
a) 7x + 3y = 16
y = 4x - 1
or
3y + 7x = 16 ... (i)
y - 4x = -1 ... (ii)
Solving the simultaneous equation by substitution;
Equation (ii) tells us that y = 4x - 1
Substituting that in (i) gives;
3(4x - 1) + 7x = 16
12x - 3 + 7x = 16
19x = 16 + 3 = 19
x = = 1
y = 4(1) - 1 = 3