All categories

3 years ago

Find the value of x and y if: (x-yi)+ 7-2i =9-i

Mathematics

1 answer:

Kruka [31]3 years ago

7 0

Answer:

x=2, y=-1

Step-by-step explanation:

$(x+7)+(-y-2)i=9-i$

the (x+7) part corresponds to the 9 and the (-y-2) corresponds to the coefficien of i.

$x+7=9$

$x=2$

$-y-2=-1$

$y=-1$

You might be interested in

Marisa wants to buy a quality phone for least $200.She has already saved $125 and plans to save an additional $10 each week.Writ

eduard

Answer:

The inequality can be represented as:

$10w+125\geq200$

where $w$ represents the number of weeks in which Maria will be able to buy a phone for least $200.

On solving it we get : $w\geq 7.5$

Step-by-step explanation:

Given:

Maria wants to buy a phone for at least $200.

She has savings of $125.

She plans to save $10 every week.

To write an inequality for the situation.

Solution:

Let the number of weeks in which Maria will be able to buy a phone be = $w$

If she saves $10 each week.

Then, in $w$ weeks she will save in dollars = $10w$

She already has savings = $125

So her total savings in $w$ weeks in dollars will be = $10w+125$

She wants to buy a phone for at least $200.

Thus, the inequality can be represented as:

$10w+125\geq200$

Solving for $w$

Subtracting both sides by 125.

$10w+125-125\geq 200-125$

$10w\geq 75$

Dividing both sides by 10.

$\frac{10w}{10}\geq \frac{75}{10}$

$w\geq 7.5$

Thus Maria needs at least 7.5 weeks to be able to buy a phone for atleast $200.

5 0

4 years ago

I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

NemiM [27]

Answer:

$- (x - 1) {}^{2} + 5$

Step-by-step explanation:

F(x) is a transformation from h(x).

So our starting equation is

$- (x - 1) {}^{2} - 1$

F(x) is also facing the same direction h(x) is so we dont have to reflect nothing across the x or y axis.

There isn't a vertical or horizontal stretch, compressions.

There isn't a horizontal shift as the x values stay in the same place.

There is a vertical shift. We can simply move h(x) up 6 units to get to f(x).

So our equation looks like.

$- (x - 1) {}^{2} + 5$

8 0

3 years ago

A social studies teacher orders several large maps for his classroom. The maps are to be shipped in a cylindrical

makvit [3.9K]

A.) 36 inches is the right answer

7 0

3 years ago

An airplane on a transatlantic flight took 4 hours 20 minutes to get from New York to its destination, a distance of 3,000 miles

ankoles [38]

738.

3200/4.33= 739.01

The closest to that is 738

4 0

3 years ago

A taxi driver charges a fixed rate of $2 and he charges $19.50 for a 7-mile trip

KiRa [710]

You will pay $2.78 per mile for a total of 7 miles you will pay $19.50, but you must remember the taxi driver charges a $2.00 fixed rate so your final total will be $21.50

7 0

3 years ago

Find the value of x and y if: (x-yi)+ 7-2i =9-i​

Find the value of x and y if: (x-yi)+ 7-2i =9-i