4x+2x=84
3x+5y=126
5x+4y=?
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cerco la x nella prima equazione:
4x+2y=84
x=(84-2y)/4
x=(42-y)/2
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cerco la y nella seconda equazione, sostituendo la x:
3x+5y=126
3[(42-y)/2]+5y=126
y= -18
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cerco la x della nella equazione, sostituendo la y:
4x+2y=84
4x+2(-18)=84
x=30
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cerco i totale nella terza equazione, sostituendo i valori della x e della y:
5x+4y= ?
5*30 + 4*(-18)= 150-72 = 78
45x - 18 factored I really need help
Can be rewritten as
9(5x--2)
Answer:
The monument is approximately 86.6 feet tall
Step-by-step explanation:
The given monument parameters are;
The distance of the person from the monument = 50 feet
The angle of depression from the top of the monument to the person's feet = 64°
Given that the angle of elevation to the top of the monument from the person's feet = The angle of depression from the top of the monument to the person's feet, we have;
tan(Angle of depression) = tan(Angle of elevation) = (The height of the monument)/(The distance from the monument)
∴ The height of the monument = tan(Angle of depression) × The distance from the monument
Substituting the known values, gives;
The height of the monument = tan(60°) × 50 ≈ 86.6
The height of the monument ≈ 86.6 feet.
Im a Filipino disguised as an American citizen
Answer:
16$
Step-by-step explanation:
Take away 9 from 17 (17-9=8) and since he used half his allowance on a movie double 8 to get 16$
