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3 years ago

Which number sentence is true?

Mathematics

1 answer:

Alexxx [7]3 years ago

5 0

Answer:

The answer is B

Step-by-step explanation:

Because A is incorrect because the -8.9 is in absolute value which mean it will be an 8.9 which is greater than 5.6

C is Incorrect because - 5.6 is not greater than the absolute value of -8.9 which is 8.9, as you can see is greater than -5.6

D is incorrect because the absolute value of 5.6 is still 5.6 and the absolute value of - 8.9 is 8.9 which is greater that 5.6

<h2>B is correct because the absolute value of -5.6 is 5.6 which makes it less than the absolute value of -8.9 because the absolute value is 8.9 which is greater than 5.6 .</h2>

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Answer:

2 ( - x + 2 )

Step-by-step explanation:

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3 years ago

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Drupady [299]

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3 years ago

Factor completely x^3+7x^2-2x-14

Ahat [919]

Answer:

Step-by-step explanation:

Notice that x + 7 is a factor of the first two terms, and that it is also a factor of the last two terms. Thus,

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3 years ago

Jimmy decides to mow lawns to earn money. The initial cost of his electric lawnmower is $350. Electricity and maintenance costs

hodyreva [135]

Answer:

a) C(x) = 4x + 350

b) 13x; $13

c) 39

Step-by-step explanation:

a) Initial cost of lawnmower = $350

Maintenance cost for 1 lawn = $4

Maintenance cost for x lawns = 4x

Total cost function, C(x) = 4x + 350

b) Revenue = Cost + Profit

= C(x) + P(x)

= 4x + 350 + 9x - 350

= 13x

Charge per lawn = $\frac{\text{Revenue}}{\text{Number of lawns}}$

= $\frac{13x}{13} = \$13$

c) For Jimmy to make a profit, P(x) must be greater than zero i.e.

$P(x) >0$

$9x-350 >0$

$9x >350$

The smallest integer value of x that satisfies this inequality is 39. Therefore, Jimmy needs to mow 39 lawns in order to start making profit.

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4 years ago