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3 years ago

1

Mathematics

1 answer:

jeka57 [31]3 years ago

8 0

Answer:

The answer would be C) x < - 2

Step-by-step explanation:

I have attached a picture that shows how the number line looks like!

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MATLAB Simulation. Develop a Matlab script to simulate the modulation of a 30 kHz carrier with a 0.5 kHz message signal. Use 40%

iren2701 [21]

Answer:

MATLAB code for DSB-SC modulation.

fc=154000; % carrier signal frequency

fm=fc/10; % message signal frequency

fs=100*fc;

t=0:1/fs:4/fm;

xc=cos(2*pi*fc*t);

xm=10*cos(2*pi*fm*t); % amplitude of sinusodial is 10

figure(1)

subplot(2,1,1),plot(t,xc);

title('carrier signal of 154 khz');

xlabel('time (sec)');

ylabel('amplitude');

subplot(2,1,2),plot(t,xm);

title('message signal of 15.4 khz');

xlabel('time (sec)');

ylabel('amplitude');

% DSB-SC MODULATION

z1= xm.*xc;

figure(2)

subplot(2,1,1),plot(t,z1);

title('DSB-SC MODULATION IN TIME DAOMAIN');

xlabel('time (sec)');

ylabel('amplitude');

l1=length(z1);

f=linspace(-fs/2,fs/2,l1);

Z1=fftshift(fft(z1,l1)/l1);

subplot(2,1,2),plot(f,abs(Z1));

title('DSB SC MODULATION IN FREQUENCY DOMAIN');

xlabel('frequency(hz)');

ylabel('amplitude');

axis([-200000 200000 0 3]);

Step-by-step explanation:

6 0

3 years ago

Frank currently rents an

hammer [34]

9514 1404 393

Answer:

monthly payment $690.25
total interest $123,490
total repaid $248.490
difference from rent $9.75

Step-by-step explanation:

Frank's monthly payment will be $690.25.

The total of all payments will be $690.25 × 360 = $248,490.00.

The interest Frank will pay is $248,490 -125,000 = $123,490.00.

The difference between Frank's rent and his loan payment is ...

$700 -690.25 = $9.75

6 0

3 years ago

Pam bought 82.68 yards of striped fabric and 44.38 yards of floral fabric. How many more

lawyer [7]

Answer:

$8 per yard of fabric

1 yard is equal to 3 feet

8 divided by 3 = 2.67(rounded)

$2.67 per foot of fabric

1 foot is equal to 12 inches

2.67 divided by 12 =0.22(rounded)

1 inch of fabric cost $0.22

3 0

3 years ago

Read 2 more answers

What's the difference between 126 1/4 and 78 2/3

anygoal [31]

126 1/4 - 78 2/3 = ?
turn into mixed fractions
504/4 - 236/3 =?
find the least common denominator
1512/12 - 944/12 = ?
subtract
568/12
turn into improper fraction
47 1/3

The difference <span>between 126 1/4 and 78 2/3 is 47 1/3</span>

5 0

3 years ago

Which of the following statements best describes the effect of replacing the graph of f(x) with the graph of f(x) − 3?

exis [7]

Answer:

The graph shifts 3 units down.

Step-by-step explanation:

5 0

3 years ago