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Fofino [41]
3 years ago
11

Choose Yes or No to tell whether the symbol will be reversed when the variable is isolated in each inequality.

Mathematics
1 answer:
balu736 [363]3 years ago
8 0

Answer:

  • No, no, yes, yes

Step-by-step explanation:

–10.5 < 3a ⇒ -3.5 < a ⇒ a > -3.5

  • <u>no</u> as variable has positive coefficient

b/6 ≤ 7 ⇒ b ≤ 42

  • <u>no</u> as variable has positive coefficient

–4.5c > 9 ⇒ c < - 2

  • <u>yes </u>as variable has negative coefficient

–21/5 ≤ –5/2d ⇒ (-21/5)*(-2/5) ≥ d ⇒ d ≤ 42/25

  • <u>yes</u> as variable has negative coefficient
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Answer:

<u>Given :</u>

length offshore = CS=√(1+X^2)

Cable charged = 5000√(1+X^2)

onshore length = 4-X

laying cost = 3000(4-X)

total cost:

C=5000√(1+X^2) +3000(4-X)

DC/DX

= [5000*(0.5)*2X/{√(1+X^2)}]-3000=0... for optimum

5000X=3000√(1+X^2)

25X^2=3+3X^2

22X^2=3

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3 years ago
How do I convert 82.1, 7.3, 9.3 in a fraction form
nalin [4]

Answer:

Step-by-step explanation:

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if there is 1 number to the right of the decimal, put that number over 10....not the whole number, just the number to the right of the decimal. Leave the number to the left of the decimal alone.

if there were 2 numbers to the right of the decimal, then put those two numbers over 100.

example :

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2.76 = 2 76/100

if there were 3 numbers to the right of the decimal, put those 3 numbers over 1000

example :

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you understand ?

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nataly862011 [7]

Answer:

Step-by-step explanation:

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Answer:

Factored form: 2x(2x^2+x+1)

Step-by-step explanation:

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