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3 years ago

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Problem 4. Determine which of the following properties: 1. Memoryless 2. time invariant 3. linear 4. causal hold, and which do n

ot, for each one of the following continuous- and discrete-time systems: (a) y(t) = x(t − 1) + x(1 − t).

1 answer:

LenaWriter [7]3 years ago

7 0

-24 G g Gg f f f f f g g g g f f.

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Evaluate the expression when x= -3.<br><br> x2-5x-8

never [62]

Step-by-step explanation:

x²-5x-8

When x=-3, then

(-3)²-5×(-3)-8
9+15-8
24-8
16

4 0

2 years ago

Read 2 more answers

a circular garden has a diameter of 12 feet. what is the best approximation for the circumference of the garden? use 3.14 to app

Nuetrik [128]

Answer:

37.68

Step-by-step explanation:

C(circumference)= 2pi r

If the diameter is 12, the r adius is 6

plug into equation

2(pi)(6)

=12pi

=37.68

3 0

2 years ago

Quality control finds on average that 0.026% of the items from a certain factory are detective. One month, 4000 items are checke

telo118 [61]

Given that 4000 items are checked in one month, let the number of detective items be represented as y.

Quality control finds on average that 0.026% of the items in the factory are detective. This implies that

$\text{Number of }\det ective\text{ items = }\frac{\text{0.026}}{100}\times\text{Total number of items checked}$

When 4000 items are checked, we have the number of detective items to be evaluated as

$\begin{gathered} \text{Number of }\det ective\text{ items = }\frac{\text{0.026}}{100}\times\text{Total number of items checked} \\ y=\frac{0.026}{100}\times4000 \\ \Rightarrow y=1.04 \end{gathered}$

Hence, the number of detective items is 1.04.

7 0

11 months ago

-2 1/8 divided by 1 1/4

attashe74 [19]

Answer:

$-1\frac{7}{10}$

Step-by-step explanation:

Convert the mixed numbers into improper fractions: $\frac{-17}{8}$ ÷ $\frac{5}{4}$
Apply the fractions formula for division: $\frac{-17*4}{8*5} = \frac{-68}{40}$
Simplify: $-1\frac{7}{10}$

6 0

3 years ago

Oliver works at a bookstore.He packed 20 identical paperbacks and 9 identical textbooks in a box. The total mass of the books wa

olchik [2.2K]

If we let p and t be the masses of the paper and textbook, respectively, the equations that would best represent the given in this item are:
(1) 20p + 9t = 44.4
(2) (20 + 5)p + (9 + 1)t = 51

The values of p and t from the equation are 0.6 and 3.6, respectively. Thus, each paperback weighs 0.6 pounds and each textbook weighs 3.6 pounds.

7 0

3 years ago