Find the sum of 3 - 7i and 8 + 4i.

2 answers:

3 0

Thanks for your equation!

This problem seems tricky, but is pretty simple.

All we have to do is add:

3 - 7i + 8 + 4i

And combine like terms:

-3i + 11

Hope this helps!

alexira [117]3 years ago

3 0

This problem looks tricky but in truth is very simple:
You simply add 3-7i+8+4i
You combine terms and it equals to- 11-3i

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Evaluate A+4 when a=7

guajiro [1.7K]

Answer:

a = 11

Step-by-step explanation:

if A is 7 in the equation A + 4, the it could also be written as 7 + 4.

then it would just be simple addition, because you would add 7 + 4, which equals 11.

Hope this helps!

8 0

3 years ago

Solve the following equation. Then place the correct number in the box provided. 3x/7-2=15

seraphim [82]

3x/7-2=15

3x/7 = 17

3x = 119

x = 39.67

5 0

3 years ago

In the figure above, quadrilateral ABCD is a parallelogram. Let x represent the measure of angle GBF, y represent the measure of

ira [324]

Answers:
measure angle x = 40°
measure angle y = 35°
measure angle z = 55°

Explanation:
Part (a): getting angle x:
In triangle BED, we have:
measure angle BED = 90°
measure angle BDE = 50°
Therefore:
measure angle DBE = 180 - (90+50) = 40°
Now, we have angle DBE and angle GBF vertically opposite angles.
This means that they are both equal. Therefore angle GBF = 40°
Since angle GBF is x, therefore:
x = 40°

Part (b): getting angle y:
We know that the sum of measures of angles on a straight line is 180.
This means that:
angle GBF + angle GBC + angle CBE = 180
We have:
angle GBF = 40°
angle GBC = 105°
angle CBE = y
Therefore:
40 + 105 + y = 180
y = 35°

Part (c): getting angle z:
In triangle BCE, we have:
measure angle BCE = z
measure angle BEC = 90°
measure angle CBE = 35°
Therefore:
z + 90 + 35 = 180
z = 55°

Hope this helps :)