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hammer [34]
3 years ago
8

Solve the following quadratic equation using the completing the square method. x² - 10x + 4 = 0

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
7 0

Answer:

x is equal to 5 ± i√21

Step-by-step explanation:

x² -10x + 4 = 0

x²- 10x -25 = -21

(x - 5)² = -21

x - 5 = √(-21)

x = 5 ± √(-21)

x = 5 ± i√21

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-4x + 11y = 15<br><br> x=2y<br><br><br> Solve for y and x
Stolb23 [73]

Answer:

to find Y

-4x + 11y = 15

x - 2y = 0

.

equal= -3x + 9y= 15

since x=2y

-3(2y) + 9y = 15

-6y + 9y =15

3y = 15

y = 15/ 3

y = 5

.

to find x

using x=2y

since

y=5

,therefore

x= 2(5)

x= 10

8 0
3 years ago
Explain or show how you know that 600:450, 60:45, and 4:3 are all equivalent.
saw5 [17]
600:450 divided by 10 = 60:45
60:45 divided by 15 = 4:3
so 4:3 x 15 = 60:45 x 10 = 600:450
5 0
2 years ago
1. Which of the following is not a solution to the equation −2x + 3y = 9.
Kruka [31]

Answer:

1. Answer is D) (1, -3)

2. Answers are B) (0,4) and D) (4,-14)

Step-by-step explanation:

You can substitute the values of x and y from the options in the equations and hence, you'll get the answers.

Hope it helps you

4 0
3 years ago
Hhhhhhhhhhhhhhhheeeeeeeeeeeeeeeeeelllllllllllllllpppppppppppppppp
OLga [1]

Answer:

69

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A store donated 2 1/4 cases of crayons to a day care center.Each case holds 24 boxes of crayons ; each box holds 8 crayons, How
aleksandr82 [10.1K]

2 1/4 x 24 x 8

9/4 x 24= 54

54 x 8 = <u>432 crayons</u>

7 0
3 years ago
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