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2 years ago

Factorize (x-3y)^3+27y^3 With explanation Will mark Brainliest for the best one...

Mathematics

1 answer:

drek231 [11]2 years ago

7 0

Use the identity: a^3 + b^3 = (a + b)(a^2 - ab + b^2)
Replace b^3 by 27y^3
x^3 + 27b^3 = (x + 3y)(x^2 - 3xy + 9y^2)

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3) Find “?” 89 A) 91° C) 136° B) 105° D) 100°

Andre45 [30]

Answer:

Step-by-step explanation:

Reason 1: 180 - 89 = 91

Reason 2: It's close to 90 degrees

Hope that helps!

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2 years ago

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Given: 5x + 3 > 4x + 7. Choose the graph of the solution set.

Dimas [21]

<h3>Answer:</h3>

$\boxed{\boxed{\pink{\bf \leadsto Option \ A \ is \ correct . }}}$

<h3>Step-by-step explanation:</h3>

For the number line refer to the attachment :

A linear inequality is given to us . And we need to find the correct number line. So the given linear inequality is :-

$\bf \implies 5x + 3 > 4x + 7 \\\\\bf\implies 5x - 4x > 7 - 3 \\\\\bf\implies \boxed{\red{\bf x > 4 }}$

This implies that the value of x is Greater than 4 . That is the inequality can have all the values more than 4. So when we see the given number lines we see that the first number line represents all values greater than 4 .

<h3>Hence the first graph of the solution set represents the given linear inequality.</h3>

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2 years ago

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erastova [34]

Answer:

6. b

8. d

9. a

Step-by-step explanation:

I'm not sure what 7 is but I can assure you that 6, 8, and 9 are correct

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2 years ago

Which of the following is a reasonable estimated answer to the following problem? 989,867 ÷ 999

kolezko [41]

991 if you round it off.

990.8
Above 5 so go up one

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2 years ago

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Write the equation of the line that passes through the points (-2,-5)(−2,−5) and (8,-8)(8,−8). Put your answer in fully reduced

Nadya [2.5K]

Answer:

y= -0.3x - 5.6

Step-by-step explanation:

m= (-5)-(-8)/(-2)-8

m= -0.3

y=mx+c

-8= -0.3(8)+c

-8= -2.4 +c

-8+2.4=c

c= -28/5

y= -0.3x - 5.6

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2 years ago