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2 years ago

Factor the expression below. 4x2 - 20x + 25

Mathematics

2 answers:

Mnenie [13.5K]2 years ago

4 0

Answer:

(2x-5)^2 ITS A MINUS NOT A PLUS I JUST. DID HIS ANSWER HES WRONG APEX VERAFIED

Step-by-step explanation:

LiRa [457]2 years ago

3 0

Answer: (2x+5)^2

Step-by-step explanation:

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Which of the following is a rational number

denis-greek [22]

Answer:

so it will be -55

Step-by-step explanation:

$\sqrt{83}$ is not a rational number

-55 is a rational number

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π is not rational number

Let me know if i'm right :(

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2 years ago

Find the equation of the line which passes through (-2,-2) and (2,-4).

Lena [83]

See photo hope it helps

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3 years ago

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the length of a rectangle is 8cm more than the width and its area is 172cm2 .find the width of the rectabgle

nikdorinn [45]

$l-the\ length\\l+8-the\ width\\A=172\ cm^2\\\\A=lengtf\cdot width\\\\subtitute\\\\l(l+8)=172\\\\l^2+8l=172\ \ \ |subtract\ 172\ from\ both\ sides\\\\l^2+8l-172=0\\a=1;\ b=8;\ c=-172\\\\\Delta=b^2-4ac\\\\\Delta=8^2-4\cdot1\cdot(-172)=64+688=752 > 0\\\\l_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ l_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{752}=\sqrt{16\cdot47}=4\sqrt{47}\\\\l_1=\dfrac{-8-4\sqrt{47}}{2\cdot1}=-4-2\sqrt{47} < 0\\\\l_2=\dfrac{-8+4\sqrt{47}}{2\cdot1}=-4+2\sqrt{47} > 0\\\\The\ width:l+8=-4+2\sqrt{47}+8=4+2\sqrt{47}\\\\Answer:\boxed{length=(2\sqrt{47}-4)cm;\ width=(4+2\sqrt{47})cm}$
$length\approx9.71cm;\ width\approx17.71cm$

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3 years ago

Sumy is working in geometry class and is given figure ABCD in the coordinate plane to reflect. The coordinates of point D are (a

Makovka662 [10]

Answer:

(b, a)

Step-by-step explanation:

Example if D was (3, 2) and reflects across y = x, D' will be (2, 3)

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3 years ago

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victus00 [196]

Answer:

13 grados es igual a 0.226893 radianes

Step-by-step explanation:

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2 years ago