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3 years ago

What is the cost of buying 5 kg of cheese worth $9.00 per kg?

Mathematics

2 answers:

mart [117]3 years ago

8 0

Cost of 1 kg = $9

So, cost of 5 kg = $9 × 5 = $45

topjm [15]3 years ago

6 0

$45

Hope this helps you

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Perform the indicated operation and express the result as a simplified complex number. I need help with 35

skelet666 [1.2K]

Given:-

$\frac{3+4i}{2-i}$

To find:-

The simplified form.

At first we take conjucate and multiply below and above.

The conjucate is,

$2+i$

So now we multiply. we get,

$\frac{3+4i}{2-i}\times\frac{2+i}{2+i}$

Now we simplify. so we get,

$\frac{3+4i}{2-i}\times\frac{2+i}{2+i}=\frac{6+3i+8i+4(i)^2}{2^2-i^2}$

We know the value of,

$i^2=-1$

Substituting the value -1. we get,

$\begin{gathered} \frac{6+3i+8i+4(i)^2}{2^2-i^2}=\frac{6+3i+8i+4(-1)_{}^{}}{2^2-(-1)^{}} \\ \text{ =}\frac{6-4+11i}{2+1} \\ \text{ =}\frac{2+11i}{3} \end{gathered}$

So now we split the term to bring it into the form a+ib. so we get,

$\frac{2+11i}{3}=\frac{2}{3}+i\frac{11}{3}$

So the required solution is,

$\frac{2}{3}+i\frac{11}{3}$

3 0

1 year ago

What is the unit rate of 405 rotations in 5 minutes

Harrizon [31]

405 rotations in 5 minutes

Divide

405/5 = 81

81 rotations per minute.

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3 years ago

7. (0) + (-9) * (+8) =

ivolga24 [154]

Answer:

-72

Step-by-step explanation:

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3 years ago

A standard deck of cards is made up of four suits: diamonds, spades, hearts, and clubs. What is the probability that you draw a

Oksi-84 [34.3K]

Answer:

1/2, because there's 4 suits, and so the probability of choosing 2 is 1/2.

Step-by-step explanation:

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3 years ago

The perimeter of the school crossing sign is 102 inches what is the length of each side

Afina-wow [57]

The perimeter of the school crossing sign is 102 inches
length of each side = ?
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6 0

3 years ago