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larisa86 [58]
3 years ago
13

Factorise: a^2 + 8a - 20

Mathematics
2 answers:
dusya [7]3 years ago
8 0
That would be
(a-2)(a+10)
Likurg_2 [28]3 years ago
3 0
 a² + 8a - 20 = a² + 2*4*a - 20 = a² + 8a + 16 -16 - 20 = (a + 4)² - 36 = (a + 4)² - 6² = (a + 4 - 6)(a + 4 + 6) = (a - 2)(a + 10)
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Mr. Marcucci received a bonus of $496 from his employer. He has to pay 33% of his bonus to taxes. How much will Mr. Marcucci pay
tiny-mole [99]
Edit: 33% is not \frac{1}{3}, therefore my solution is wrong. The correct answer is 0.33 x 496, which is $163.68

The following is the original solution, which is incorrect. 
33% = \frac{1}{3}. Multiply the bonus of $496 by \frac{1}{3} to get the solution of \frac{496}{3}, or 165 and \frac{1}{3}

Therefore the solution is $165.33


7 0
3 years ago
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3.3(n-8)-n=1.2<br><br> Simplify! ::)
nydimaria [60]

Answer:

n=12

Step-by-step explanation:

3.3(n-8)-n=1.2

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3.3n -26.4 -n = 1.2

Combine like terms

2.3n -26.4 = 1.2

Add 26.4 to each side

2.3n -26.4+26.4 = 1.2 +26.4

2.3n = 27.6

Divide each side by 2.3

2.3n/2.3 = 27.6/2.3

n=12

8 0
3 years ago
5/6+5/12 <br><br> For brainliest
Amiraneli [1.4K]

Answer:

5/4

Step-by-step explanation:

5/6+5/12

or, {(5×2)+5}/12

or, 15/12 = 5/4

8 0
3 years ago
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Juli2301 [7.4K]

Answer:

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Step-by-step explanation:

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Answer:

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8 0
2 years ago
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