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patriot [66]
2 years ago
9

a train moves at a constant speed of 8 Miles every four minutes fill in the table below to show how far the train according to d

ecorate amount of time​
Mathematics
1 answer:
WITCHER [35]2 years ago
4 0

Answer: Well theres no table added but it probably looks like this

X               Y

8mph     4 min

2mph     1 min

I think you can do the rest

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Which of the following of x and y would make up the following expression represent a real number? (4+5i)(x+yi)
salantis [7]

Answer:

x = 4 and y = - 5

Step-by-step explanation:

note that the product of a complex number and it's conjugate is real

That is

(a + bi)(a - bi) where a, b are real

= a² - abi + abi - b²i²

= a² + b² ← a real number

For (4 + 5i)(x + yi) to be real

we require (x + yi) to be the conjugate of 4 + 5i , that is 4 - 5i

(4 + 5i)(4 - 5i) ⇒ x = 4 and y = - 5



8 0
2 years ago
Justin wants to cover the top of a circular swimming pool to keep insects out of the pool. If the diameter of the pool is 20 fee
evablogger [386]

Answer: The area is approximately 314 ft^2

Step-by-step explanation:

Well if the diameter is 20  feet then the radius will be 10 because the radius is half the diameter, and to find the area of a circle, you use the formula

A= \pi r^{2}  where A is the area and pi times the radius squared.

We will represent pi by 3.14  

A= 3.14* 10^2

A= 3.14 * 100

A = 314

6 0
3 years ago
Find the sum of the terms. <br><br><br><br><br>The numerator of the simplified sum is .
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3 0
2 years ago
Q.1 Thee are five girls and three boys in a group. The teacher chose one person at random. How could the teacher make a random c
Hatshy [7]

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Q1: She can write names of each Student on separate Papers and choose one Randomly, the Result may be 5:3 Girls to Boys

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4 0
3 years ago
Pa tulong po pleasee
astraxan [27]

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1. 7

2. 54÷2=27

only this I know please put brainlest

5 0
3 years ago
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