3 years ago

What are the following solutions to 2x^2-8x-90

Mathematics

1 answer:

Nostrana [21]3 years ago

7 0

You're 2 solutions are

(9,0)(-5,0)

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nikdorinn [45]

Answer:

The population will be at 65.45 in 2007.

Step-by-step explanation:

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3 years ago

Which of the following is the function of FX if F^-1 (x) = ×/8 +3

Anton [14]

Answer:

F(x)=8(x-3)

Step-by-step explanation:

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2 years ago

Add.<br> (-x^3+26x^2-7-13)+(6x^4-x^3+8x+27)<br> express the answer in standard form.

Alex777 [14]

$(-x^3+26x^2-7-13)+(6x^4-x^3+8x+27)\\\\=-x^3+26x^2-7-13+6x^4-x^3+8x+27\\\\=6x^4+(-x^3-x^3)+26x^2+8x+(27-7-13)\\\\=\boxed{6x^4-2x^3+26x^2+8x+7}$

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2 years ago

The area of a circle is 43.25cm2.<br> Find the length of the radius rounded to 2 DP.

Monica [59]

Answer:

3.71 cm

Step-by-step explanation:

Hi there!

Area of a circle equation: $A=\pi r^2$ where r is the radius

Plug in the area 43.25 cm²

$43.25=\pi r^2$

Divide both sides by π to isolate r²

$\frac{43.25}{\pi} =\frac{\pi r^2}{\pi} \\\frac{43.25}{\pi}=r^2$

Take the square root of both sides to isolate r

$\sqrt{\frac{43.25}{\pi}} =r\\3.71=r$

Therefore, the length of the radius rounded to 2 decimal points is 3.71 cm.

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2 years ago

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MrRissso [65]

Answer:

Step-by-step explanation:

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3 years ago