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Art [367]
4 years ago
9

Simplify this expression (-4-9i)+(5-7i)

Mathematics
2 answers:
Charra [1.4K]4 years ago
8 0
To simplify you combine like terms. 
You open parenthesis-
-4 - 9i + 5 - 7i
combine like terms-
1 - 16i   is your answer. 
Hope this helps!

swat324 years ago
8 0
You can simplify the real and imaginary parts independently:

-4+5 = 1
-9i-7i = -16i

So the simplified expression is 1-16i
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3 years ago
A large recipe calls for 3.18kg of sugar. Your bags of sugar are measured in pounds (lb). Remembering that 1kg=2.20462lb, how ma
evablogger [386]

Answer:

You will need to buy 5 1.50lb bags of sugar to make your recipe.

Step-by-step explanation:

This problem can be solved by consecutive rules of three.

A large recipe calls for 3.18kg of sugar. Your bags of sugar are measured in pounds (lb). Remembering that 1kg=2.20462lb

How many lbs of sugar you will need to buy?

1 kg - 2.20462lb

3.18 kg - x lb

x = 3.18*2.20462

x = 7 lb

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x bags - 7 lb

1.5x = 7

x = \frac{7}{1.5}

x = 4.67

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8 0
3 years ago
Which division problem is represented with this model? 14÷3 15÷3 13÷2 15÷4
stich3 [128]

Answer:

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Step-by-step explanation:

Required

Interpret the division model

A division model is of the form: Dividend ÷ Divisor

In the attached figure (in the question), there are 5 vertical partitions.

This vertical partitions represents the result of the model

Also from the question attachment;

The horizontal partitions on the left, if traced to the right side of the diagram means that each vertical partition is divided into 3 and this represents the divisor of the model.

So, we have:

Divisor = 3

To get the quotient of the model, I'll make use of my attached file.

Counting the number of boxes, we can see that there are 15 boxes in total.

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Dividend = 15

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4 0
3 years ago
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8 0
3 years ago
i need to find an equation for this problem that applies to any step (e.g. step 100) but my brain doesn't work
Anton [14]

Answer:

its

Step-by-step explanation:

b

6 0
3 years ago
Read 2 more answers
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