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lys-0071 [83]
3 years ago
11

a student named sarah hill follow the steps below to find her magic number 1 find the number of letters in her first name 2 find

the number of letters in your last name 3 find the sum of the two numbers 4 multiply the sum by 14 what is Sarah magic number
Mathematics
2 answers:
asambeis [7]3 years ago
7 0
Sarahs magic number is 126
Nata [24]3 years ago
4 0
Her magic number is 126.
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A box resting on a table has a mass of 5.0 kg what is its weight
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Factorize (X + 2 y)square - (2 x minus y) square​
gulaghasi [49]

Answer:

- (x - 3y)(3x + y)

Step-by-step explanation:

Given

(x + 2y)² - (2x - y)² ← expand both parenthesis using FOIL

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= x² + 4xy + 4y² - 4x² + 4xy - y² ← collect like terms

= - 3x² + 8xy + 3y² ← factor out - 1 from each term

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Consider the factors of the product of the coefficient of the x² term and the coefficient of the y² term which sum to give the coefficient of the xy- term.

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The factors are - 9 and + 1

Use these factors to split the xy- term

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= 3x(x - 3y) + y(x - 3y) ← factor out (x - 3y) from each term

= (x - 3y)(3x + y)

Thus

(x + 2y)² - (2x - y)² = - (x - 3y)(3x + y)

3 0
3 years ago
In Zachs class 3/5 of the 25 students are boys. How many boys are in Zachs class?
LUCKY_DIMON [66]

Answer:

15

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(3/5)*25=15

4 0
3 years ago
What is another way to group the factors (3x2)x5
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3*(2*5)
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