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ratelena [41]
4 years ago
7

Simplify the expression 5/4-(7/4+2i) and write the result in the form a+bi

Mathematics
1 answer:
ivanzaharov [21]4 years ago
6 0

Answer: -1/2 -2i

Step-by-step explanation:

Hi, to answer this question we have to simplify the expression:

First, we have to apple distributive property for the (-) sign. It’s like having the number -1 multiplied by the sum.

5/4-(7/4+2i)

5/4 -1(7/4+2i)

5/4 (-1) 7/4 (-1)2i

5/4 -7/4 -2i

Now we add both numbers (with no variable ⇒5/4 + (-7/4) )

-1/2 -2i or

(-1/2)+ (-2)i

Feel free to ask for more if needed or if you did not understand something.

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Find the surface areas of the figures below. I don't need the work, just the answers.
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Hello!

The surface area of a sphere is found by using the formula: SA = 4πr².

Figure 1

In the first figure, the radius is given which is 18 meters. With that, we can substitute the value of the radius into the formula and solve.

SA = 4π(18)²

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In the second figure, the diameter of the circle is given. The radius is half the diameter, so to find the radius, you need to divide the diameter by 2.

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The conference room can hold fewer than 100 people<br><br> What is the equation for this question
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