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boyakko [2]
3 years ago
10

Evaluate the expression 2x + 3 + (x*x), for x=4 please help!

Mathematics
1 answer:
larisa [96]3 years ago
3 0
Answer is 27
2(4) + 3 + (4*4) = 8 + 3 + 16= 27
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Nick planted a cedar tree. It grew 10 cm in ½ of a year. What will the height of the tree be at the end of 6 years?
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Answer:

120 cm

Step-by-step explanation:

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Using the rule of three, 10 cm is to 6 months what x is for 72 months so

x = (72 * 10) / 6 = 120

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3 years ago
The power P produced by a wind turbine is directly proportional to the cube of the wind speed S. A wind speed of 37 miles per ho
vfiekz [6]

Answer:the output for a wind speed of 40 miles per hour is 810.8 kilowatts.

Step-by-step explanation:

The power P produced by a wind turbine is directly proportional to the cube of the wind speed S. This means that

P is directly proportional to S

Introducing a constant of proportionality, k, it becomes

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The expression becomes

P = 20.27S

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3 years ago
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Step-by-step explanation:

7 0
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