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2 years ago

Which statement is true about this quadratic equation? y=x^(2)-11x+7

Mathematics

1 answer:

Sliva [168]2 years ago

6 0

Answer: This quadratic equation has two real solutions.

Step-by-step explanation:

$y=x^{2} -11x+7\\\\D=(-11)^{2} -4 \cdot 7=121-28=93 \: > 0\\\\x=\dfrac{11 \pm \sqrt{93} }{2}$

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If a cube with the length of the side of 4 cm is cut into smaller cubes with the length of the side of 1 cm, then what is the pe

ValentinkaMS [17]

Answer:

300 %

Step-by-step explanation:

Length of the larger cube =4 cm

So volume $V=side^3=4^3=64cm^3$

Length of the smaller cube = 1 cm

Volume of the smaller cube $V=side^3=1^3=1cm^3$

So total number of smaller cube $=\frac{64}{1}=64$

Surface area of the larger cube $A=6\times side^2=6\times 4^2=144cm^2$

Surface area of the 64 smaller cube $A=64\times 6\times side^2=64\times 6\times 1^2=384cm^2$

So percentage increase in surface area $=\frac{384-96}{96}\times 100=300$ %

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3 years ago

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3 years ago

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Hatshy [7]

Answer:

Angle 2 = 48

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3 years ago

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Answer:

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Step-by-step explanation:

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Read 2 more answers

Help this is due in a few minutes!!

zloy xaker [14]

I think it’s a im not that sure though

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2 years ago