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Bad White [126]
3 years ago
5

Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 6x + 9 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4

= 0 D. x2 + 5x − 4 = 0
Mathematics
2 answers:
aksik [14]3 years ago
6 0

A.\ x^2+6x+9=x^2+3x+3x+9=x(x+3)+3(x+3)=(x+3)(x+3)\\\\B.\ x^2-x-6=x^2+2x-3x-6=x(x+2)-3(x+2)=(x+2)(x-3)\\\\C.\ x^2+3x-4=x^2+4x-x-4=x(x+4)-1(x+4)=(x+4)(x-1)\\\\D.\ x^2+5x-4\leftarrow ANSWER

Hitman42 [59]3 years ago
4 0

The answer is D, because the others can be solved. A when factored is equal to -3, when B is factored it is equal to 3,-1, when C is factored it is 1,-4. D can be solved but you will only get irrational numbers which can't be used.

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y = -8x +13


5 0
2 years ago
A local art studio offers a new session of drawing classes every 12 days. A competing art studio offers a new session of drawing
Artist 52 [7]
To solve this we are going to find the least common multiple of 8 and 12.
Remember that the least common multiple (LCM) of tow or more numbers is the smallest positive number that is multiple of those two or more numbers. 
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Notice that the first common value between the two list is 24, and that is precisely the number of days it will take for drawing sessions to coincide.

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5 0
3 years ago
What is the Y value of the point that Partitions the directed line segment A.B. into a 1:3 ratio
xenn [34]

Answer:

y = 5

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5 0
2 years ago
Chnstopher earned $142.20. He saved $24.50. He spent the rest on 2 new pairs
pogonyaev

Answer:

$58.25

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142.20 - 24.50 = 117.50

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6 0
3 years ago
Read 2 more answers
6. <br> Which of the following is the graph of the equation y = −2x2 − 3x + 4?
Stells [14]

Answer:

From the looks of the graph, it looks like the answer will be Letter C. (The last graph).

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Direction: Opens Down

Vertex:  ( − 3 /4 ,  41 /8 )

Focus:  ( − 3 /4 ,  5 )

Axis of Symmetry:  x = − 3 /4

Directrix:  y = 21 /4

x                  y

− 3               − 5

− 2                2

− 3                4

41                8

0                 4

1                 − 1

4 0
2 years ago
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