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2 years ago

6

Please help me someone

1 answer:

Airida [17]2 years ago

3 0

I think the last one but I could be wrong

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Find the area of this circle.

SashulF [63]

Answer:

not sure man... goodluck tho

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2 years ago

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What is the median of the ages in this stem-and-leaf plot? 43 45 46 47

ICE Princess25 [194]

To find a median of an even amount of numbers, add the two middle numbers, and divide by two.

45 + 46 = 91

91/2 = 45.5

45.5 is your median

hope this helps

6 0

2 years ago

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A parabola can be drawn given a focus of (-4,10) and a directrix of y=-4 write the equation of the parabola in any form

sweet-ann [11.9K]

Answer:

$(x+4)^2=28(y-3)$

Step-by-step explanation:

The directrix of the parabola is the horizontal line with the eqaution $y=-4.$ The focus of the parabola is at point (-4,10), than the axis of symmetry of the parabola is the perpendicular line to the directrix passing through the focus. Its equation is $x=-4$

The distance between the directrix and the focus is $|10-(-4)|=14,$ so $p=14$ and the vertex is at point $\left(-4,10-\dfrac{14}{2}\right)\rightarrow (-4,3)$

Parabola goes in positive y-direction, hence its equation is

$(x-x_0)^2=2p(y-y_0),$

where $(x_0,y_0)$ is the vertex, so the equation of this parabola is

$(x+4)^2=28(y-3)$

8 0

3 years ago

I need help!! Can an awesome genius please help me out?

tensa zangetsu [6.8K]

Answer:

D

Step-by-step explanation:

7 0

2 years ago

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What is the distance from (−4, 0) to (2, 5)? Round your answer to the nearest hundredth. Explain your answer.

11Alexandr11 [23.1K]

Answer:

A 7.81

Step-by-step explanation:

Use the distance formula to find the distance between coordinates.

$d = \sqrt{(2--4)^2 + (5-0)^2} \\d = \sqrt{(2+4)^2 + (5)^2} \\d = \sqrt{(6)^2 + (5)^2} \\d = \sqrt{36 + 25} \\d = \sqrt{61} \\d=7.81$

5 0

2 years ago