All categories

2 years ago

Please help. I’ll mark you as brainliest if correct!

Mathematics

1 answer:

Sergeu [11.5K]2 years ago

8 0

Answer:

a = 13

b = 0

Step-by-step explanation:

Conjugate of -3 + 2i is -3 - 2i

(-3 + 2i) (-3 - 2i)

We need to expand:

9 + 6i + -6i + -4i^2

-4i^2 =(-4)(-1) = 4

9 + 4 = 13

a = 13

b = 0

You might be interested in

(19) mx+nx=p<br> How do you solve it

hodyreva [135]

Answer:m=p/x - n, n=p/x-m

Step-by-step explanation: I hope this is what you are looking for.

3 0

3 years ago

A mirror is 24 inches high and 28 inches wide. The center of the mirror will hang 514 feet from the floor on a wall that is 8 fe

Vanyuwa [196]

The distance from the top of the mirror to the ceiling once the mirror is hung on the wall is 21 inches

The dimension of the mirror is given as:

$Height = 24\ in$

$Width = 28\ in$

From the center of the mirror to the floor of the wall, the distance is:

$Distance =5\frac14\ ft$

So, the distance to the top of the mirror will be:

$Top = 5\frac 14\ ft + \frac 12 \times Height$

Substitute 24 for height

$Top = 5\frac 14\ ft+ \frac 12 \times 24\ in$

$Top = 5\frac 14\ ft+ 12 \ in$

Convert feet to inches

$Top = 5\frac 14\times 12\ in+ 12 \ in$

$Top = 63\ in+ 12 \ in$

$Top = 75 \ in$

The distance from the top of the mirror to the ceiling is the difference between the height of the wall and 75 inches.

So, we have:

$Distance = 8\ ft - 75\ in$

Convert feet to inches

$Distance = 8\times 12\ in - 75\ in$

$Distance = 96\ in - 75\ in$

$Distance = 21\ in$

Hence, the distance is 21 inches

Read more about lengths at:

brainly.com/question/10545161

3 0

2 years ago

Which product has 4 zeros after the digit 3?

sineoko [7]

In order for the product of some numbers to end in a zero, the prime factors of ... So 1 x 2 x 3 x ... x 98 x 99 x 100 (AKA 100!) has 24 zeroes at the end

6 0

3 years ago

#4 need help asap will give brainly

pychu [463]

total surface area Stot = 1180 in2

lateral surface area Slat = 920 in2

top surface area Stop = 130 in2

bottom surface area Sbot = 130 in2

3 0

3 years ago

What is the equation of the line that is parallel to the line 5x + 2y = 12 and passes through the point (-2,4)?

pav-90 [236]

Answer:

y=-5/2x-1

Step-by-step explanation:

change the equation to slope intercept form

y=-5/2x+6

graph the point (-2, 4)

use the slope of the equation to find the y intercept

y intercept = -1

write equation of the parallel line using the same slope of the first line

-5/2x

and the y intercept of the new parallel line -1

y=-5/2x-1

7 0

3 years ago