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kipiarov [429]
3 years ago
11

Jaydee was going to sell all of her stamp collection to buy a video game. After selling half of them she changed her mind. she b

ought six more. how many did she start with if she now has 22?
Mathematics
1 answer:
vlada-n [284]3 years ago
7 0

Answer:

32

Step-by-step explanation:

22 - 6 = 16.

16 x 2 =32

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vagabundo [1.1K]
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Square root of 16x^2y^4
motikmotik
4xy^2





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Pam likes to practice dancing while preparing for a math tournament. She spends 80 minutes every day practicing dance and math.
Kisachek [45]
80/2= 20 then take away the extra 20 from the math for dance and you have the answer... 20 get it?
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Read 2 more answers
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
The perimeter of a rectangle is 44. The length is 5 less than double the width. What is the length?
OleMash [197]

44 = 2x - 5 \\   \frac{39}{2}   = \frac{2x}{2}  \\ 19.5 = x \\
4 0
3 years ago
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