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Tatiana [17]
3 years ago
11

What is a correct expansion of (3x + 2)(3x^2 + 4)

Mathematics
1 answer:
worty [1.4K]3 years ago
3 0
It would be 9x^3+6x^2+12x+8

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Which of the following number sentences is true?<br> A -9=9<br> B-9=-(9)<br> C 9=(-9)<br> D 9=-(-9)
kondaur [170]

Answer:

A and D are the true number sentences

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2 years ago
Determine whether the quadrilateral is a parallelogram. Justify you answer.
agasfer [191]

Answer:

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3 years ago
How to add 4/12 and 1 2/3
kolbaska11 [484]

Answer:

1 3/5

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3 0
2 years ago
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The length of a photograph is 3cm less than twice the width. The area is 54cm². Find the dimentions of the photograph.
AnnyKZ [126]
L=2w-3 

w(2w-3)=54

2w²- 3w-54=0

A= 2 , B= -3, C= -54

sub values into quadratic formula
 i attached picture of formula

Final answer:  you will be given 2 answers 6 and -4.5. -4.5 is rejected since a negative value cannot represent length because that just doesn't make sense.

w=6

Check:
L=2w-3
=2(6)-3
=12-3
=9
  9*6=54

Therefore the dimensions of the photograph are 6 cm by 9 cm



3 0
3 years ago
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Theo can run 1/2 mile in 1/10 hour. If theo continues at this rate how far can he run in a hour?
kirill [66]
1/2 mile x 10 = 5 miles
5 0
3 years ago
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