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vredina [299]
2 years ago
14

8(10)2y = 7200 What the answer

Mathematics
1 answer:
garik1379 [7]2 years ago
7 0

Answer:

y = 45

Explanation:

(8)(10)(2)y = 7200

[ Simplify both sides of the equation ]

160y = 7200

[ Divide both sides by 160 ]

160y / 160 = 7200 / 160

y = 45

Check:

8(10)2(45) = 7200

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What must be added to both sides in 4x² + 24x + 8 = 32 in order to complete the square?
Sergeu [11.5K]

Answer:

16

Step-by-step explanation:

To solve a quadratic equation by using the completing the square method, the coefficient of the square term i.e x² must be one (1).

Therefore, we would have to first make the coefficient of x² to be equal to 1.

4x² + 24x + 8 = 32

We would simplify the equation;

4x² + 24x = 32 - 8

4x² + 24x = 24

Divide all through by 4;

x² + 8x = 24

The value to be added = (8/2)² = 4² = 16

x² + 8x + 16 = 8 + 16

x² + 4x + 4x + 16 = 24

x(x + 4) + 4(x + 4) = 24

(x + 4)² = 24

Taking the square root of both sides;

x + 4 = ± 4.9

x = -4 ± 4.9

x = -4 + 4.9 = 0.9

or

x = -4 - 4.9 = - 8.9

<em>Therefore, 16 must be added to solve the quadratic equation by completing the square method. </em>

6 0
3 years ago
what is 900+100 I'm stuck 100 points for the people who can answer i know its 1000 still 100 points go listen to (joey trap) bar
charle [14.2K]

Answer:

1000

Step-by-step explanation:

x = 1, y = -1, and z = 2

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2 years ago
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Rashid [163]

Answer:

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step by step explanation:
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Ann [662]

Answer:

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Step-by-step explanation:

Let the unit place be ‘x'

Tenth place be y

The number is 10y+x

x+y = 9 (according to the condition) (1)

Digits are interchanged Unit place' y ‘& tenth place ‘ x'

New no is 10x +y

This is 9 more than the original number

10x+ y = 10y+x +9

10x-x+y-10y = 9

9x-9y= 9

x-y = 1 (dividing by 9) (2)

Adding the two equations

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x= 5

Substituting the value of x in first equation

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