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3 years ago

The diameter of a circle is 2 kilometers. What is the circle's circumference? d=2 km Use 3.14 for . kilometers?

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

3 0

Answer:

6.28km

Step-by-step explanation:

C=314/100×2

I think that the answer is 6.28km

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Factor completely 3x^2+9x-3<br>3(x^2+3)<br>3(x^2+3-1)<br>3x(x^2+3x-1)<br>prime

Firdavs [7]

Answer:

Answer from the answer data to choose from

Factor completely

$3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)$

Step-by-step explanation:

$3x^2+9x-3=(3)(x^2)+(3)(3x)-(3)(1)\\\\=(3)(x^2+3x-1)\\\\\text{For}\ x^2+3x-1\ \text{use the quadratic formula}\\\\x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x^2+3x-1\to a=1,\ b=3,\ c=-1\\\\x=\dfrac{-3\pm\sqrt{3^2-4(1)(-1)}}{2(1)}=\dfrac{-3\pm\sqrt{9+4}}{2}=\dfrac{-3\pm\sqrt{13}}{2}=-\dfrac{3\pm\sqrt{13}}{2}\\\\3x^2+9x-3=3\left(x+\dfrac{3-\sqrt{13}}{2}\right)\left(x+\dfrac{3+\sqrt{13}}{2}\right)$

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3 years ago

What is the Slope of the line passing through the points (0,4) and (-8, -1

Contact [7]

Slope = (y2 - y1) / (x2 - x1)
(0,4)...x1 = 0 and y1 = 4
(-8,-1)...x2 = -8 and y2 = -1
now we sub and solve
slope = (-1 - 4) / (-8 - 0) = -5/-8 = 5/8 <=

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3 years ago

Read 2 more answers

Write a word promblem that u can solve using multiples to estimate the quotient include a solution

Svetradugi [14.3K]

Here is your answer; ITS CALLED GOOGLE.

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3 years ago

Alekssandra [29.7K]

Answer:

$39.68

Step-by-step explanation:

12.40÷2.4=4.96

4.96×8=39.68

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3 years ago

Solve for x ................

AleksandrR [38]

Step-by-step explanation:

complementary angles are 90°,supplementary are 180°

(3x+25)+2x=180(supplementary angles)

2x +3x is 5x

5x=180-25=155

5x=155÷5=31

x=31

5 0

3 years ago

The diameter of a circle is 2 kilometers. What is the circle's circumference? d=2 km Use 3.14 for ​. kilometers?

The diameter of a circle is 2 kilometers. What is the circle's circumference? d=2 km Use 3.14 for . kilometers?