Questions by Ralph Zhang

Questions by Ralph Zhang

Find the first 10 samples (manual \& code) of the impulse response of the causal system y[n]=x[n]+0.5y[n−1] What type of system is it?

asked Oct 15, 2024

1 answer

4 votes

78.6k views

As the salt KNO₃ dissolves in methanol, the number x(t) of grams of the salt in the solution after t seconds satisfies the differential equation: dx/dt = 0.8 times -0.004 times 2 If x = 50 when t = 0.

asked Aug 8, 2024

1 answer

0 votes

116k views

A researcher claims that the mean of the salaries of elementary school teachers is greater than the mean of the salaries of secondary school teachers in a large school district. The mean of the salaries

asked Jul 11, 2024

1 answer

5 votes

109k views

Which statement is true about the difference between calcium carbonate and calcium oxide? A. Calcium oxide has the same physical properties and the same chemical properties. B. Calcium oxide has the same

asked May 7, 2024

1 answer

5 votes

169k views

the density of solid w w is 19.3 g/cm3. 19.3 g / cm 3 . how many atoms are present per cubic centimeter (cm3) ( cm 3 ) of w?

asked Jan 21, 2024

1 answer

4 votes

25.9k views

Can someone please help me with this, i’m a little stuck

asked Dec 16, 2023

1 answer

5 votes

159k views

Identify the perpendicular lines in the diagram bellow. select all that apply.

asked Dec 13, 2023

1 answer

4 votes

72.5k views

My whole engineering class just got yelled at for screaming Queer

asked Nov 26, 2023

2 answers

25 votes

47.8k views

I will drop a picture

asked Sep 24, 2023

1 answer

5 votes

158k views

Simplify 22/3-26/5+2/3

asked Nov 23, 2022

1 answer

4 votes

33.9k views

What is a crystalline structure?

asked Oct 6, 2022

2 answers

0 votes

182k views

Which of these phrases were invented by Shakespeare? "breaking the ice" "get your money's worth" "flesh and blood" the green-eyed monster" good riddance" dead as a doornail"

asked Aug 14, 2022

2 answers

9 votes

166k views

An item has a listed price of $30. If the sales tax rate is 5%, how much is the sales tax (in dollars)?

asked Jul 9, 2022

2 answers

0 votes

149k views

a 5 kg object is pushed with a 10 n force for 1 second how much will the momentum of the object change?

asked Aug 16, 2021

1 answer

5 votes

80.5k views

How does this passage demonstrate that this culture is a patriarchy? Nnaemeka sends his father a picture from his wedding day. Okeke chooses the woman that Nnaemeka marries. O Nnaemeka does not marry Nene

asked Jul 21, 2021

2 answers

3 votes

130k views

If f(x)= 3x-5 and g(x)= x+2, then what is f(x)+g(x) ?

asked Jun 17, 2021

1 answer

0 votes

153k views

hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeellllllllllllllllllllllllllllllllllllllllpppppppppppppppppppppppppppppppppppppppppp

asked Apr 6, 2021

1 answer

0 votes

10.3k views

What are the coordinates of Z? A: (c – 2a, 0) B: (a – c, 0) C: (0, b) D: (a, 0)

asked Mar 3, 2021

1 answer

0 votes

147k views

What is the solution set for 3x+1≥8 and 10x≤15 A. { x : 1 1/2 ≤ x ≤ 2 1/2 } B. no solution C. { x : 5 < x < 7 } D. { x : x < 5 or x > 7 }

asked Nov 28, 2020

1 answer

2 votes

189k views

Michigan's Isle Royale is an island located in Lake Superior that is 45 miles long and 9 miles wide. Ecologists estimate that the moose population on the island has been there since approximately the year

asked Aug 22, 2020

1 answer

5 votes

177k views

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