517.21 km what is the nearest 10km?

1 answer:

8 0

To round to the nearest 10, we must look at the tens and ones place (1 and 7). Because the ones place has a value greater than or equal to five, it rounds up.
Final answer: 520 km

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Three students are arguing over who can run the fastest. Student A says that she can run 2/3 mile in six minutes. Student B says

Liula [17]

Answer:

student A- can run 2/3 mile in six minutes

1/9 mile/min

student B- can run 1/2 mile in 4 minutes

Speed=1/8 mile/min

student C- can run 4/5 mile in 8 minutes

speed=1/10 mile/min

Step-by-step explanation:

5 0

2 years ago

What is the constant term of the quotient when 2x^3-3x^2 + 4x-2 is divided by x^2-x+2?

AlladinOne [14]

Answer:

-1

Step-by-step explanation:

See the attachment for the polynomial long division. The constant in the quotient is -1.

_____

Here, there is a remainder of -x. If there were no remainder the constant in the quotient is the ratio of the constant in the dividend to the constant in the divisor: -2/2 = -1.

That could be a first guess in a "guess and check" solution approach.

<em>Guess</em>: first term of binomial quotient is (2x^3)/x^2 = 2x; last term of binomial quotient is -2/2 = -1. So, the quotient is guessed to be (2x -1).

<em>Check</em>: (2x -1)(x^2 -x +2) = 2x^3 -3x^2 +5x -2

Subtracting this from the actual dividend gives a remainder of -x. This has a lower degree than the divisor, so no further adjustment of the quotient is required.