3 years ago

Moreeeeee freeeeeee pointsssssssssss have a great dayyyyyyyy

Mathematics

2 answers:

AfilCa [17]3 years ago

6 0

THANKSSSSSSSSS hhhhhhhhhhhhhhhhhhhh

damaskus [11]3 years ago

3 0

Answer:

Thanks for the free points.

Step-by-step explanation:

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when two complex numbers are added the sum is 5+6i. If one of the numbers is -4-5i, what is the other number?

Dahasolnce [82]

Answer:

$x = 9 + 11i$

Step-by-step explanation:

let's make the other number x and add it with -4-5i, equate to 5+6i

$- 4 - 5i + x = 5 + 6i$

add 4 and 5i to both sides to get x on its own:

$x = 5 + 6i + 4 + 5i$

collect like terms. This is the other number.

$x = 9 + 11i$

3 0

3 years ago

the length of a rectangle is 3 times the width, and the perimeter is 144cm what is the length and with

solong [7]

Answer:

Width = 18 cm

Lenght = 54 cm

Step-by-step explanation:

L = 3W

P = 2L + 2W

The perimeter of a rectangle:

144 = 2 (3W) + 2W

144 = 8W

144/8 = W

W = 18

L = 3W = 3(18) = 54

I hope this help you

4 0

2 years ago

A rectangle with an area of 110m^2 has a length of 20m, find the width?<br> Area=lw

pochemuha

Answer:

5.5

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

12<br> ∑ 20(0.5)^n-1<br> n=3

Alex17521 [72]

Assuming n starts from 1.
∑ $20 (0.5)^{n-1}$ ; n = 1 to 3
$=20 (0.5)^{1-1}+20 (0.5)^{2-1}+20 (0.5)^{3-1} \\ =20 (0.5)^{0}+20 
(0.5)^{1}+20 (0.5)^{2} \\ =20(1)+20(0.5)+20(0.25) \\ =20+10+5 \\ 
=35$

8 0

3 years ago

Pleeeaaaaasssnnsnsnsnnanannananannanamnanw

olga2289 [7]

Answer:

Angle PQR = 120°

Step-by-step explanation:

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3 years ago