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3 years ago

What is the value of 7x squared + 2x when x = 3

Mathematics

1 answer:

Vadim26 [7]3 years ago

7 0

Answer:

The value of equation is 69 at x=3

Step-by-step explanation:

Given Equation:

$7x^2+2x$

We have to find the value of the expression at x=3

Putting the value of 'x' in the given equation.

= $7(3)^2+2(3)\\$

= $(7*9)+6\\63+6\\69$

The value of the above expression at x=3 is 69.

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tigry1 [53]

The total distance that was covered by the sprinter in Kilometers is:

2.4 Km

<h3>How much is the total distance covered?</h3>

To obtain the total distance covered by the sprinter, we need to first realize that 1 Km is equal to 1000 meters. That said, the question above requires us to change 2400 meters to kilometers.

Thus we will have:

2400 Meters * 1 km / 1000 meters

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Step-by-step explanation:

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Strike441 [17]

Answer:

See explanation

Step-by-step explanation:

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