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ELEN [110]
3 years ago
10

Evaluate piecewise functions

Mathematics
1 answer:
Vika [28.1K]3 years ago
5 0

Answer:

F(4) = 9

Step-by-step explanation:

Notice that for f(4), we need to use the function definition for the partitioned Domain that includes x = 4, and that is the expression :

f(x) = x^2-7

Therefore:

f(4) = 4^2-7 = 16-7 =9

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Pls help 25 points and brainliest.
puteri [66]

This is an equation that calculates potential energy and converts the value into its commercial unit.

<u>Step-by-step explanation:</u>

Step 1:

Given equation is 2 kg × 9.81 m/s² × 40 m. From the units, find the corresponding measurements. kg is the unit of mass (m), 9.81 m/s² is the acceleration due to gravity (g) and m is the unit of length or height (h).

This shows that this equation is to find potential energy. It is then converted into the commercial unit of energy (Joules).

⇒ Potential Energy = mgh = 2 kg × 9.81 m/s² × 40 m

                                            = 784.8 kg m²/s²

                                            = 784.8 N-m (Since unit of force, 1 N=kg m/s²)

                                            = 784.8 J (1 Newton-m = 1 Joule)

     

3 0
3 years ago
Read 2 more answers
5 plus 2 minus 6 times 4​
nevsk [136]

Answer:

714

Step-by-step explanation:

5+2=7

7-6=1

1x4=4

3 0
4 years ago
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The volume of two spheres are in the ratio 27:125. What is the ratio of their areas?
ExtremeBDS [4]

The volume of two spheres are in the ratio 27:125. The ratio of their areas is 9:25

6 0
2 years ago
Name:
Nina [5.8K]

Answer:

Step-by-step explanation:

1.

Tu=8

WU=10

Tx=5.65

Tv=11.3

3 0
3 years ago
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In a large population of adult rabbits, the mean ear length is 4.5 inches with standard deviation 1.25 inches. Suppose 16 rabbit
skelet666 [1.2K]

Answer:

(4.5, 0.3125)

Step-by-step explanation:

given that

The mean is 4.5 inches

the standard deviation is 1.25 inches

and, the sample of 16 rabbits is selected

we need to find out the approximate distribution

so,

= (4.5, 1.25 ÷√16)

= (4.5, 0.3125)

hence, the same is to be considered

3 0
3 years ago
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