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lbvjy [14]
3 years ago
12

Keith sold half of his comic books and then bought nine

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
3 0

Answer:

22 comic books.

Step-by-step explanation:

(20 - 9) * 2 First subtract 9 from 20

11 * 2 Multiply 11 by 2

22 is the product

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murzikaleks [220]

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169.1 unit^2 to the nearest tenth.

Step-by-step explanation:

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a train travels 288km at a uniform speed.if the speed has been 4km per hour more it would have taken one hour less for the same
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Given:

A train travels 288 km at a uniform speed.

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To find:

The initial speed of the train.

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New speed of train = (x+4) km/h

We know that,

Time=\dfrac{Distance}{Speed}

Time taken by the train initially to cover 288 km is \dfrac{288}{x} hours.

New time taken by the train to cover 288 km is \dfrac{288}{x+4} hours.

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Splitting the middle term, we get

x^2+36x-32x-1152=0

x(x+36)-32(x+36)=0

(x+36)(x-32)=0

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We know that the speed cannot be negative. So, the only possible value of x is 32.

Therefore, the speed of the train is 32 km/h.

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A mechanic is paid $61,490 in salary for a year. Assuming there are 26 pays in a year, what is her biweekly (average) salary? $3
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Answer:

$2,365

Step-by-step explanation:

Divide $61,490 by 26...

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