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Leviafan [203]
3 years ago
15

Basketball shoes are on sale for 22%off. what is the reagular price if the sale price is $42?

Mathematics
1 answer:
Brrunno [24]3 years ago
4 0

Answer:

The regular price was $53.85

Step-by-step explanation:

78% = $42

42 ÷ 78 x 100 = 100% = $53.85 (when rounded to 2 d.p)

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For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a
Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

k {x}^{2}  + 20x + k = 0

The discriminant of this equation is given by;

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where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

{20}^{2}  - 4 \times k \times k = 0

Simplify to get:

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This implies that:

400  = 4  {k}^{2}

100 =  {k}^{2}

Take square root to get:

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3 0
3 years ago
One half of a watermelon is divided 6 peoples at a picnic
Eduardwww [97]

Answer:

Each person will get 1/6 of the half or 1/12 of the whole melon.

Step-by-step explanation:

8 0
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Read 2 more answers
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