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RSB [31]
3 years ago
9

What addition doubles fact can help to find 4+3?

Mathematics
1 answer:
lubasha [3.4K]3 years ago
8 0
4+4=8
right???????????????????????
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A sinusoidal carrier wave has an amplitude of 5 volts, a frequency of 1MHz, and zero phase angle. Select the correct carrier wav
Vedmedyk [2.9K]

Answer:

The correct answer is b.

Step-by-step explanation:

The wave equation is given generally as:

c(x, t) = Acos(kx - wt)

Where A = amplitude

k = wave number

w = angular frequency.

x = horizontal distance moves by the wave.

t = time

The options show to us that the wave depends only on t and not (x, t).

Hence, the wave equation becomes:

c(t) = Acos(wt)

Given that:

A = 5 V

f = 1 * 10⁶ Hz

Angular Frequency, w, is given as:

w = 2πf

w = 2 * π * 1 * 10⁶ Hz

w = 2π(1 * 10⁶)

The wave equation becomes:

c(t) = 5cos(2*π*1*10⁶)

The correct answer is b.

6 0
3 years ago
It is estimated that 26% of the population of Gingerland have red hair. If 10 residents are chosen at random, what is the probab
sveticcg [70]

Answer:

The answer for me would be a) exactly 4 of them have red hair

Step-by-step explanation:

being that there is 26 percent of people in Gingerland that gave red hair I cam assume that that is a lot of people being that Gingelrand is like a city/town so exactly 4 of them is what I assume is the amswer

6 0
3 years ago
A room service waitress at a hotel receives an automatic gratuity of 15% of the food bill. If the food bill is $19.00, how much
Len [333]

Answer:

$2.85 is tipped to the waitress

7 0
3 years ago
Can someone please help me with this question ?
____ [38]
The cost of water would be $615 as he needs 3 acre-feet of water for 205 acre/ft
5 0
3 years ago
Explain how you can tell 5/12 is less than 1/2 without using a model?
castortr0y [4]
5/12 is less than 1/2 because 6/12 = 1/2
Therefore, there are not enough 1/12 pieces to equal or exceed 1/2.
7 0
3 years ago
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