2 years ago

Multiply the following complex numbers (7 + 2i)(2+3i) O A. 20-25i B. 8-25i O C. 8+ 25i O D. 20-25i

Mathematics

1 answer:

ruslelena [56]2 years ago

5 0

Đáp án là C: 8+25i nhé

8+ 25i

You might be interested in

Michael pays $30 to enter a state fair, plus $4 for each ride. Which of the following equations represents his total cost? A. y=

omeli [17]

He spends 30 to enter and 4 per ride

y = 4x + 30....with x being the number of rides and y being the total cost

4 0

3 years ago

Read 2 more answers

If a cylinder with height 9 inches and radius rr is filled with water, it can fill a certain pitcher. How many of these pitchers

katrin2010 [14]

Answer:

9 pitchers

Step-by-step explanation:

Given

Cylinder 1:

$Radius = r$

$Height = 9$

Cylinder 2:

$Radius = 3r$

$Height = 9$

Required

How many pitchers' cylinder 2 can fill

First, we calculate the volume of both cylinders

Volume is calculated as:

$Volume = \pi r^2h$

For A:

$V_A = \pi r^2*9$

$V_A = 9\pi r^2$

For B:

$V_B = \pi (3r)^2 * 9$

$V_B = \pi *9r^2 * 9$

$V_B = 9* 9\pi r^2$

In (a): $V_A = 9\pi r^2$

So, we have ve:

$V_B = 9*V_A$

$V_B = 9V_A$

<em>If the first cylinder can fill 1, then the second can fill 9 pitchers</em>

7 0

2 years ago

A) A designer has a circular tablecloth with radius 0.5 m. He wants to sew a fringe around the cloth. The fringe is sold by the

Andrei [34K]

1) 0.5m . 2 = 1 meter
2) 4.70$
3) (r^2) / 2 = 81/2 = 40.5m^2

5 0

2 years ago

In the diagram below, E T, E, T, end overline is parallel to W A, W, A, e. Find the perimeter of △ P A W △PAWtriangle, P, A, W.

svetlana [45]

Answer:

20.5

Step-by-step explanation:

8 0

2 years ago

PLEASEEE HELP 100 POINTSSS AND BRAINLIEST!!!! THANKSSSSS <33

Sergio039 [100]

Answer:

The answer would be a

Step-by-step explanation:

An acute angle is an angle with two similar sides an obtuse angel is an very wide trianglee

8 0

1 year ago

Read 2 more answers

Multiply the following complex numbers (7 + 2i)(2+3i) O A. 20-25i B. 8-25i O C. 8+ 25i O D. 20-25i​

Multiply the following complex numbers (7 + 2i)(2+3i) O A. 20-25i B. 8-25i O C. 8+ 25i O D. 20-25i