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Hatshy [7]
3 years ago
6

Perform the indicated operation (-2i+3i)+(-1-4i)

Mathematics
1 answer:
Shtirlitz [24]3 years ago
4 0

Answer:

  -1 -3i

Step-by-step explanation:

It is unusual to have two imaginary terms grouped together like this. Taking the question at face value, we treat i as though it were a variable, and collect terms in the usual way.

  (-2i +3i) +(-1 -4i) = i(-2+3-4) -1 = -1 -3i

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Use area of squares to visualize Pythagorean theorem
docker41 [41]

We know that the Pythagorean Theorem is a² + b² = c² and that the area of a square is l x w.

Firstly, we'll have to find the two measures of the triangle that correspond to the areas.

Since the figures are squares, we know that the length and width values must be the same.

We could square the numbers to find the side lengths, however we would have to square them again when substituting for the Pythagorean Theorem, so we can leave them as-is and adjust the equation accordingly.

(33) + b² = (44)

Next, we'll subtract our smaller value from our larger.

b² = (11)

Once again, we could find the square root of this number, but we'd just have to square it again to find the area of the square, so we can just simply write our answer as 11 units.

Therefore, the area of the square is 11 units!

<em>Hope this helped! :)</em>

5 0
3 years ago
What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3
Georgia [21]

Answer:

9

Step-by-step explanation:

6.4(x)+2.8y=44.4

6.4(3)+2.8y=44.4

19.2+2.8y=44.4

2.8y=25.2

y=9

7 0
2 years ago
Read 2 more answers
Jennifer earns $39 for 6 hours of babysitting.how much will she earn for 10 hours
nadya68 [22]
Find the unit rate.

39/6 = 6.5

$6.50 an hour

multiply this by ten to find the cost for 10 hours

$6.5 x 10 = $65

she will earn $65 in ten hours.
 hope this helps! :D

4 0
3 years ago
Read 2 more answers
In June, the price of a pair of inline skates is $165. The price changes each of the next 3 months.
Natasha2012 [34]

Answer:

july: $153 august: $155 september: $156

Step-by-step explanation:

8 0
3 years ago
Answer for brainilest and 10 points
Firdavs [7]

Answer:15625

Step-by-step explanation:

5^2 is 25

5^4 is 625

625*25 = 15625

8 0
3 years ago
Read 2 more answers
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