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Sergio [31]
3 years ago
12

Mary owns 13 shares of a certain stock. Yesterday the value of each share went up by 4 dollars. What was the total change in val

ue of her shares?
Mathematics
1 answer:
Ede4ka [16]3 years ago
4 0

Answer: +52

Step-by-step explanation:

From the question, we are informed that Mary owns 13 shares of a certain stock and that the value of each share went up by 4 dollars.

The total change in value of her shares will be gotten by multiplying the number of shares that Mary has by 4. This will be:

= 13 × 4

= 52

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Answer:

3x^2−4x−4

Step-by-step explanation:

3x^2−8x−2+4x−2

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=(3x^2)+(−8x+4x)+(−2+−2)

=3x^2+−4x+−4

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Step-by-step explanation:

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7 0
3 years ago
Simplify completely the quantity x squared plus x minus 12 over quantity x squared minus x minus 20 divided by the quantity 3 x
posledela
X² + x - 12 / x² - x - 20  ÷ 3x² - 24x + 45 / 12x² - 48x - 60

x² + x - 12 / x² - x - 20 * 12x² - 48x - 60 / 3x² - 24x + 45

<u>(x² + x - 12)(12x² - 48x - 60)</u>
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<span><u>12x^4 - 48x³ - 60x² + 12x³ - 48x² - 60x - 144x² + 576x + 720</u>
</span>3x^4 - 24x³ + 45x² - 3x³ + 24x² - 45x - 60x² + 480x - 900
<span>
<u>12x^4 - 48x³ + 12x³ - 60x² - 48x² - 144x² - 60x + 576x + 720</u></span>
3x^4 - 24x³ - 3x³ + 45x² + 24x² - 60x² - 45x + 480x - 900

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<u>4(</u><span><u>x^4 - 3x³ - 21x² + 43x + 60)  </u>
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4 0
3 years ago
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Answer:

E

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let a, b, c represent the number of students in 6th, 7th, 8th grade

ratio of students : teachers = 28 : 1

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Then

a + b + c = 2296 , that is

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b + c = 1468 → E

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3 years ago
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