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worty [1.4K]
3 years ago
9

If f(x)=3x, g(x)=x+4, and h(x)=x2-1, find the value of f[g(1)]

Mathematics
1 answer:
Strike441 [17]3 years ago
4 0

Answer:

15.

Step-by-step explanation:

The given functions are

f(x)=3x

f[g(1)]=f[(1)+4]

h(x)=x^2-1

We need to find the value of f[g(1)].

f[g(1)]=f[(1)+4]          [\because f[g(1)]=f[(1)+4]]

f[g(1)]=f[5]

f[g(1)]=3(5)           [\because f(x)=3x]

f[g(1)]=15    

Therefore, the value of f[g(1)] is 15.

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lisabon 2012 [21]

Answer:

The first listed equation is the correct equation to solve

The correct answer is: t = 5 seconds

Step-by-step explanation:

Let me mention first that there is an error in the statement that the gravitational pull of the Earth is 16 ft/s^2. It is in fact 32 ft/s^2, and the actual equation uses half of the acceleration multiplied by the square of the variable time, so it gives as final expression :

y(t)=-16\,t^2+ 0 \,t +400

and we want to find the value/s for "t" that make this equation equal zero (when it reaches the ground and the object just touches the ground. This makes the equation we want to solve:

0=-16\,t^2+ 0 \,t +400\\16\,t^2+0\,t -400=0

which solving for "t" becomes:

16\,t^2-400 =0\\16\,t^2=400\\t^2=\frac{400}{16} \\t^2=25\\t= +/- 5\,\,sec

So we adopt the positive answer (positive time) since the negative value has no physical meaning for this problem.

That is: t = 5 seconds

6 0
3 years ago
When muiltplying two exponents, If the base numbers are DIFFERENT can u add the two exponents?
aleksley [76]
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8 0
3 years ago
If each person gets 3/4 pound of squash, how many people can evenly split a 9-pound basket of squash from the farmer's market?
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Step-by-step explanation:

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How do I do this I really don't understand anything here
Lera25 [3.4K]

The red arrows show that the lines are parallel, but using the stuff given you can make an equation.
its hard to explain without drawing but starting from the 60 if you can make a Z you will get alternate angles and that mean that the given equation MUST be equal to 60. So,

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x=8 (is your answer)

hope you understand


8 0
4 years ago
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