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Jobisdone [24]
3 years ago
7

Solve the quadratic equation for x. What is one of the roots? 5x2 − 45 = 0

Mathematics
1 answer:
AlladinOne [14]3 years ago
7 0

Answer:

x = ± 3

Step-by-step explanation:

Given

5x² - 45 = 0 ( divide through by 5 )

x² - 9 = 0 ( add 9 to both sides )

x² = 9 ( take the square root of both sides )

x = ± \sqrt{9} = ± 3

Thus the roots are x = - 3, x = 3

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Answer:

hcf:3x^3-6x^2+y^2-3x+54

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2 years ago
A plant foreman wanted to know how many hours had been spent on a particular project. He asked his supervisors to report the hou
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Answer:

828.7 hours.

Step-by-step explanation:

To answer a question in which the total time has to be calculated of all the activities, first of all, all the times have to be converted to a single form. There are two types: decimals and fractions. Convert the fractions into decimals.

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Therefore, the total number of hours spent on this project by all four departments. is the sum of all the above numbers. 202.50 hours + 212.75 hours + 198.25 hours + 215.20 hours = 828.7 hours.

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3 0
3 years ago
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140 equals the sum of k and 38
Mandarinka [93]

Answer:

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Step-by-step explanation:

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2 years ago
What is the distance from Cto D?
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Given:

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