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EastWind [94]
3 years ago
8

Which of these equations are true when the value of y is 27?

Mathematics
1 answer:
charle [14.2K]3 years ago
4 0

Answer: i and lll

Step-by-step explanation:

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Factor the trinomial by grouping.<br> 9x^3 - 3x^2 -30x
katen-ka-za [31]

Answer:

3x(3x+5)(x-2)

Step-by-step explanation:

9x^3-3x^2-30x= \\\\3x(3x^2-x-10)= \\\\3x(3x^2+5x-6x-10)= \\\\3x(x(3x+5)-2(3x+5))= \\\\3x(3x+5)(x-2)

Hope this helps!

4 0
3 years ago
Solve the equation for all values of x in simplest form (x + 3)^2 = -16
Arlecino [84]

Answer:

x = -7 or  x = 1

Step-by-step explanation:

Given expression:

    (x + 3)²  = -16

 

Problem;

   Solve for x;

Solution:

 To solve for x; we use the factorization method;

     Take -16 to the left of the equation;

      (x + 3)²  = -16

         (x + 3)² + 16 = 0

       (x+ 3)² + 4²  = 0

if    x² + y²  = (x + y)(x - y)

     So;

       (x + 3 + 4) (x + 3 - 4) = 0

       (x + 7)(x - 1) = 0

       x + 7  = 0 or x - 1 = 0

      x = -7 or  x = 1

6 0
3 years ago
Can someone pls help out
weqwewe [10]

Answer:

A. 99.87%

Step-by-step explanation:

i don't explain things good

6 0
3 years ago
I think the answer might be 2 1/3, square root of 5,2.5, and square root of 8
Marat540 [252]

Answer:

Step-by-step explanation:

We will squared each, we will find

49/9 5 6.25 8 then the correct order

Square root 5

2 1/3

2.5

Square root 8

5 0
3 years ago
Please help serious answers only
Stolb23 [73]

Answer: Maybe it's the third one I'm not completely sure. don't take my word for it.

Step-by-step explanation:

6 0
2 years ago
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