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4 years ago

Plz help math this is worth 20 points

Mathematics

2 answers:

tekilochka [14]4 years ago

8 0

I’m pretty sure it’s proportional but the closest to the answer I got was 3/2.

Gwar [14]4 years ago

6 0

idk the answer to this

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If i have 10% off the regular price of 3.30 what is the slae price

SashulF [63]

Answer:

0.33

Step-by-step explanation:

6 0

3 years ago

Help please!!!!!.....

GarryVolchara [31]

Answer:

294

Step-by-step explanation:

7*7*6=294

6 0

4 years ago

Read 2 more answers

Examine the figure below.

goldfiish [28.3K]

The correct angle measures are m/JKL = 37° and mZKLM = 126°. Option A and C

<h3>How to determine the angle</h3>

Given that;

∠ K = (4x + 5)°

∠ J = 6x + 1

∠ L = 8x + 30 = 180 ( angles on a straight line)

Note that the sum of the angles of a triangle is 180°

∠ K + ∠ J + ∠ L = 180

6x + 1 + 4x + 5 + 8x + 30 = 180

collect like terms

18x = 180 - 36

18x = 144

Make 'x' the subject

x = 144/ 18

x = 8

Substitute the values

∠ JKL = (4x + 5)° = 4(8) + 5 = 37°

∠KJ L = (6x + 1)° = (6(8) + 1) = 49°

∠ KLM = 8x + 30 = 8(8) + 30 = 94°

∠ JLK = 8x + 30 = 180 = 180 - 94 = 86°

Thus, the correct angle measures are m/JKL = 37° and mZKLM = 126°. Option A and C

Learn more about a triangle here:

brainly.com/question/7620723

#SPJ1

5 0

2 years ago

Test the claim that the proportion of people who own cats is significantly different than 90% at the 0.1 significance level.

miss Akunina [59]

Answer:

The right answer is Option B:

$H_0: \pi=0.9\\\\H_1: \pi\neq0.9$

Step-by-step explanation:

In this case we have to perform a hypothesis test on the proportion of the people owning cats.

The claim is that the proportion is significantly different than 905, what means it can be greater or smaller than 90% to reject the null hypothesis. Because of that, the null hypothesis has to state an equality (H0:p=0.9).

The right answer is Option B:

$H_0: \pi=0.9\\\\H_1: \pi\neq0.9$

4 0

3 years ago

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