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Nadusha1986 [10]
3 years ago
15

Replace * with a number in such a way that the trinomial could be written in the form a(x+b)^2 or a(x-b)^2.

Mathematics
2 answers:
weqwewe [10]3 years ago
6 0

Answer:

  • a) 6
  • b) 3.125 or 25/8

Step-by-step explanation:

a)

  • 1.5x² + 6x + * =
  • 1.5(x² + 4x + *) =
  • 1.5(x² + 2*2x + 4) =
  • 1.5(x + 2)²
  • * = 1.5*2² = 6

b)

  • 2x² - 5x + * =
  • 2(x² - 2.5x + *) =
  • 2(x² - 2*1.25x + 1.25²)=
  • 2(x - 1.25)²
  • * = 2*(1.25)² = 3.125  or 25/8
Lostsunrise [7]3 years ago
3 0

Answer:

Solution given;

a. 1.5x^2+6x+*

1.5(x²+4x+*)

1.5(x²+2.2x+2²)

1.5(x+2)²

b) 2x^2-5x+*

2(x²-5x/2+*)

2(x²-2×5/4 ×x +(5/4)²)

2(x-5/4)²

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Answer:

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To pay the $40 dollar for the booth she would need to make 9 sales with her current profit

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(2b) A rectangular prism measures 2 &amp; 2/5 inches by 3 &amp; 1/5 inches by 2 inches. How many cubes with edge length 1/5 inch
erastova [34]

Answer:

1920 cubes.

Step-by-step explanation

Turn both the mix numbers into improper fractions.

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Then you will turn 1/5 into its reciprocal and multiply both the improper fractions by it. You can just casually multiply 2 and 5.

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