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2 years ago

When is x - y = 4x - 4y

Mathematics

1 answer:

Setler79 [48]2 years ago

3 0

The answer is
When x = 4
Y = 4
Maybe the answer is correct

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What is the solution of the equation when solved over the complex numbers?

kumpel [21]

Answer:

$x=+i\sqrt{20}\approx+4.472i$

$x=-i\sqrt{20}\approx-4.472i$

Step-by-step explanation:

Starting from $x^2+20=0$ , we do $x^2=-20$ , which means $x=\pm\sqrt{-20}$ , which can be written as $x=\pm\sqrt{(-1)(20)}$ , which gives us $x=\pm\sqrt{(-1)}\sqrt{(20)}$ , which we know is $x=\pm i \sqrt{(20)}$ , so our solutions are:

$x=+i\sqrt{(20)}$

$x=-i\sqrt{(20)}$

Which can be approximated to:

$x\approx+4.472i$

$x\approx-4.472i$

3 0

3 years ago

23 less than a number p

Oxana [17]

Answer:

can u express ur question

Step-by-step explanation:

23-p it doesn't make sense cause I write a number with=

5 0

2 years ago

PLZ HELP ASAP!!!

ozzi

Answer:

Part 1: Angle = 36°

Part 2: Angle = 72°

Step-by-step explanation:

If we have an angle "x", then

Its complement is 90 - x, and

supplement is 180 - x

Let's write equations and solve.

Complement = 1.5 times angle

90 - x = 1.5x

90 = 1.5x + x

90 = 2.5 x

x = 90/2.5 = 36

Now using 2nd equation:

3 * angle = 2 * Supplement

3x = 2 (180 - x)

3x = 360 - 2x

3x + 2x = 360

5x = 360

x = 360/5 = 72

7 0

2 years ago

What number decreased by 3.5 equals 12.7?

mihalych1998 [28]

Answer:

16.2

Step-by-step explanation:

you add 3.5 to 12.7

3.5 + 12.7 = 16.2

hope this helps

5 0

2 years ago

Show work or reported!

Black_prince [1.1K]

Answer:

8(A.)

9(maybe D.)

(B.)

Step-by-step explanation:

7 0

2 years ago