All categories

3 years ago

Z2 + (2j – 3)z + (5 – j) = 0

Mathematics

1 answer:

BARSIC [14]3 years ago

4 0

Answer:

2z+(2j-3)z+(5-j)=0

2z +2jz-3z+5-j=0

2z-3z+2jz-j=-5

-z+2jz-j=-5

2jz-z-j=-5

I hope this help

You might be interested in

Plz help with math problems I'm confused. Giving brainlist :D

kati45 [8]

5 - substitute the numbers 1-10 for n in (3n-4) and add up all your answers. So (3(1)-4) + (3(2)-4)...

5 0

4 years ago

How much lighter is 345 g than 1,1 kg

NemiM [27]

Answer:

755 gram lighter

Step-by-step explanation:

Convert 1.1kg into gram by multiplying it with 1000

1.1 x 1000= 1100 and we take this amount and subtract it with 345g

1100-345= 755g

3 0

3 years ago

John has a boat that will travel at the rate of 15 kph in still water. He can go upstream for 35 km in the same time it takes to

Otrada [13]

Answer:

The boat traveling at 24 kph when John goes downstream.

Step-by-step explanation:

We are given the following in the question:

John has a boat that will travel at the rate of 15 kph in still water.

Let x be the speed of the current.

Speed of boat in upstream

$(15-x)\text{ kph}$

Speed of water in downstream

$(15+x)\text{ kph}$

Relation:

$\text{Speed} = \dfrac{\text{Distance}}{\text{Time}}$

We have to find the speed of boat in downstream.

Time to travel upstream for 35 km = Time to travel 140 km downstream

$\displaystyle\frac{35}{15-x}=\frac{140}{15+x}\\\\35(15+x) = 140(15-x)\\525 + 35x = 2100 - 140x\\175x = 1575\\x = 9$

Thus, speed of current is 9 kph.

Speed of boat in downstream = 15 + 9 = 24 kph.

Thus, the boat traveling at 24 kph when John goes downstream.

4 0

3 years ago

A triangle has angle measures 23° and 35°. What is the measure of the third angle ?

frozen [14]

23 + 35 + A=180
58 + a =180
-58 -58
-------------------
A = 122 degrees

7 0

3 years ago

Read 2 more answers

What is the solution to this inequality x-7>8

Veronika [31]

Answer:

Choice a: $x>5$

Step-by-step explanation:

All you have to do on this one is add the 7 on both sides.

$x-7>8\\x>5$

So the answer is anything greater than 5.

7 0

3 years ago