3 years ago

The graph show me the function f(x)=3^x. What is the value of x when f(x)=9?

Mathematics

1 answer:

Oliga [24]3 years ago

8 0

Answer:

The answer would be 2 as 3^2 is equivalent to 3x3 which is 9.

Step-by-step explanation:

1. 9=3^x

2. (3)^2=3^x

3. Bases are similar look at exponents

3. x=2

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Solve system of equations y=3/4x+2 5x+4y=-24

satela [25.4K]

Answer:

$\left \{ {{y=-1} \atop {x=-4}} \right.$

Step-by-step explanation:

$\left \{ {{y=\frac{3}{4} x+2} \atop {5x+4y=-24}} \right. \left \{ {{y=\frac{3}{4}x+2 } \atop {5x+4*(\frac{3}{4}x+2)=-24 }} \right. \left \{ {{y=\frac{3}{4}x+2 } \atop {5x+3x+8=-24}} \right. \left \{ {{y=\frac{3}{4}x+2 } \atop {8x=-32}} \right. \\\left \{ {{y=\frac{3}{4}x+2 } \atop {x=-4}} \right. \left \{ {{y=\frac{3}{4}*(-4)+2 } \atop {x=-4}} \right. \left \{ {{y=-3+2} \atop {x=-4}} \right. =>\left \{ {{y=-1} \atop {x=-4}} \right.$