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Kisachek [45]
3 years ago
5

Do both of them for 50 points

Mathematics
1 answer:
erastovalidia [21]3 years ago
5 0

Answer:

1) 5.44, 2) 3.9

Step-by-step explanation:

1) a/b + 2b - a^2 when a = 1.4 and b = 0.2

plug in the values:

1.4/0.2 + 2(0.2) - (1.4)^2 = 7 + 0.4 - 1.96 = 5.44

2) a[b-2c]^3 - d/e when a = 2, b = -0.75, c = -1, d = 0, e = -12 5/7 (rewritten to -89/7 = 12.71)

again, plug in the values:

2[-0.75-2(-1)]^3 - 0/12.71 = 2[1.25]^3 - 0 = 2[1.95] = 3.9

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3 years ago
Each side of a rectangle is increased in length by 20%. What is the percentage increase in the area?
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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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Hey there! 

<span>Here is how you solve the question:

1. Write the question out as a fraction.

</span>\frac{72}{20} 
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2. Since percent means, 'Out of 100', get 100 as the denominator. 

</span>\frac{72}{20} = \frac{360}{100}
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So, the answer is 360 cookies.

(If you feel that my answer has helped you, please consider rating it and giving it a thank you! Also, feel free to choose the best answer, the brainliest answer!)
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Thank you for being part of the brainly community! :D
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