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3 years ago

7.85-2.15c=20.75 solve this boii

1 answer:

4 0

Simplifying 7.85 + -2.15c = 20.75 Solving 7.85 + -2.15c = 20.75 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '-7.85' to each side of the equation. 7.85 + -7.85 + -2.15c = 20.75 + -7.85 Combine like terms: 7.85 + -7.85 = 0.00 0.00 + -2.15c = 20.75 + -7.85 -2.15c = 20.75 + -7.85 Combine like terms: 20.75 + -7.85 = 12.9 -2.15c = 12.9 Divide each side by '-2.15'. c = -6 Simplifying c = -6

Happy studying ^_^

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Dan has 4 groups of 10 and 3 left over.

Alexxx [7]

Is there anything else? Like what is the question asking?

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3 years ago

What is the value of i 97 – i? –i 0 –2i i Superscript 96

Valentin [98]

The question is not clearly readable, but I'm assuming the expression which makes more sense, so you can have a clue

Answer:

$i^{97}-i=0$

Step-by-step explanation:

Powers of The Imaginary Unit

The imaginary unit i is defined as

$i=\sqrt{-1}$

The first powers of i are

$i^0=1$

$i^1=i$

$i^2=(\sqrt{-1})^2=-1$

$i^3=i.i^2=-i$

$i^4=i^2.i^2=1$

And so on the cycle repeats every four numbers. To find the value of $i^{96}$ we can find the remainder of 96/4=0. So $i^{96}=i^0=1$

The given expression is

$i^{97}-i$

Factoring

$i(i^{96}-1)$

Since $i^{96}=1$

$=i(1-1)=0$

The required value is 0

6 0

3 years ago

Read 2 more answers

An animal shelter houses dogs, cats, and rabbits. there are 126 animals at the shelter. of the animals, 1/3 are cats. three four

viva [34]

Given that an animal shelter houses three kinds of animals: dogs, cats and rabbits and it has a total of 126 animals. 1/3 of the animals are cats. This means, 1/3 of 126 is 42. So there are 42 cats. 3/4 of the remaining animals, which is 84 are dogs. So 3/4 of 84 is 63. So there are 63 dogs. 63 dogs plus 42 cats is 105 animals. 126 minus 105 is 21. Therefore, there are only 21 rabbits. Hope this helps.

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3 years ago

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valkas [14]

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2 years ago

Please show an actual answer i need help

jek_recluse [69]

Answer:

1. wire is approx. 143.96 ft

2. pole is approx. 106.55 ft

Step-by-step explanation:

Mapping the information on the SOHCAHTOA picture below:

Φ = 46

wire = hypotenuse

adjacent side = 100

CAH is most suitable:

cos 46° = 100/wire => wire = 100/cos 46 ≈ 143.96

pole = opposite side + 3

TOA is most suitable:

tan 46° = (pole-3)/100 => pole = 3 + 100 * tan 46 ≈ 106.55

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3 years ago