Answer:
Step-by-step explanation:
Given the simultaneous equation
3x+4y=15. Equation 1
3x-y=30. Equation 2
Using elimination method
Sutract equation 2 from 1
Then, will have
3x-3x+4y--y=15-50. -×-=+
4y+y=-15
5y=-15
Divide Both sides by 5
y=-15/5
y=-3
From equation 2
3x-y=30
3x--3=30
3x+3=30
3x=30-3
3x=27
Divide both side by 3
x=27/3
x=9
Then, x=9 and y=-3
Answer:
x = 4, y = 2
Step-by-step explanation:
Using the sine ratio in the right triangle and the exact value
sin30° = , then
sin30° = = = ( cross- multiply )
x = 4
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Using the tangent ratio in the right triangle and the exact value
tan30° = , then
tan30° = = = ( cross- multiply )
y = 2
Answer:
x=3
Step-by-step explanation:
If all of the angles and sides are congruent, then you would just subtract 7 by 4 and get 3 for x.
Answer:(p.s) i lable the charts a b c
5+7-11=a 11-5+7=c 11-(5-7)=c 5-11+7+b
Step-by-step explanation:
Answer:
1.)B
2.A
Step-by-step explanation: