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rosijanka [135]
3 years ago
9

Number 3 Show me how you got it

Mathematics
1 answer:
ELEN [110]3 years ago
7 0
I can’t see all of it
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Which statement is true based on the diagram?
Margarita [4]

Answer:

option B

Step-by-step explanation:

Triangle RST~ TRIANGLE RQP

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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

= x² + 4xy + 4y² - (4x² - 4xy + y²) ← distribute

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

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

= - 1(3x² - 8xy - 3y²) ← factor the quadratic

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.

product = 3 × - 3 = - 9 and sum = - 8

The factors are - 9 and + 1

Use these factors to split the xy- term

3x² - 9xy + xy - 3y² ( factor the first/second and third/fourth terms )

= 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
Evaluate the expression (6 + 9 ÷ 3) × 7.
Katarina [22]

Answer:

63

Step-by-step explanation:

(6+9÷3)×7

division is always first

(6+3)×7

then parenthesis

9×7

multiply

63

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Hi I do not need the help but can I have it so here it is “There are 12 girls and 18 boys in a class. What is the largest number
PolarNik [594]
12 groups in a 1:1 ratio of boys:girls. there are only 12 girls so one in each group + 1 boy per group gives you 12 groups. with a remainder of 6 boys
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What is the function transformation between f(x)=4x+5 and g(x)=- 4x+7 ?
nirvana33 [79]

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2

Step-by-step explanation:

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