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Eva8 [605]
2 years ago
13

The diameter of a circle is two times its radius. Which equation shows another way to represent the area of a circle?

Mathematics
1 answer:
horrorfan [7]2 years ago
4 0
If the area for a circle is A= \pi  r^{2}, you can write it in terms of its diameter like this: A= \pi ( \frac{1}{2}d) ^{2}
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Can someone please help me with math
DaniilM [7]

Answer:

B

Step-by-step explanation:

they want us to find the equation in slope intercept form

which is y= mx + b

where m = slope and b = y intercept

the slope is change in y over change in x

as y goes up 1 x goes up 1 so the slope is 1 or m=1

the y intercept is at point (0,1)

so the y intercept is 1

now we add it all together and get that the equation Is

y=x+1

8 0
3 years ago
In California in 2000, the ballot included an initiative to add "none of the above" to the list of options in all candidate race
sveticcg [70]

Answer:

No, because the sample was randomly selected.

Step-by-step explanation:

In this example, the main element that we need to focus on is the way in which the sample was determined. We learn that the sample was taken in California with 1000 people. However, this sample was random, and the survey was conducted in both English and Spanish. The fact that this was a random sample means that it is representative of the population. The size of the population does not affect the accuracy of a random sample.

4 0
3 years ago
A ball is thrown upward from the top of a 40 foot high building at a speed of 80 feet per second. The ball's height above
tekilochka [14]

it takes 5 seconds to reach a height of 40 ft. and It takes 2.5 seconds to reach maximum height.

Let h(t) represent the height of the ball at time t.

Given that the height is given by:

h(t) = -16t² + 80t + 40

1) For the ball to reach a height 0f 40 ft, h(t) = 40, hence:

40 = -16t² + 80t + 40

16t² - 80t = 0

t(t - 5) = 0

t = 0 or t = 5

Hence it takes 5 seconds to reach a height of 40 ft.

2) The maximum height is at h'(t) = 0,

h'(t) = -32t + 80

-32t + 80 = 0

32t = 80

t = 2.5

It takes 2.5 seconds to reach maximum height.

Find out more at: brainly.com/question/11535666

5 0
2 years ago
Please Help me with this
Elden [556K]
1) he is not reasonable because pounds per feet would mean you would do 7.3/14.6 which is a decimal

hope this helped :)
7 0
3 years ago
In the diagram below,
sergey [27]
Can you attach a picture because this is very hard to read
5 0
2 years ago
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