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Dima020 [189]
2 years ago
15

Help ill put the pics below

Mathematics
1 answer:
Aliun [14]2 years ago
6 0

Answer:

A

Step-by-step explanation:

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The formula to calculate the area of a circle from its circumference is:<br><br><br> A =c2/4π
densk [106]

Answer:

(if its a true or false question) True

Step-by-step explanation:

<u>We know-</u>

<u>Area of a circle = </u>

A=(π)r2

<u>Circumference of a circle = </u>

C=2(π)r

<u>Where pi is a constant and r is the radius of the circle.</u>

<u>Using these two formulas we can express A in terms of C as follows:</u>

<u />

c2=[2(π)r]2

⇒ c2=4[(π)2]r2 ⇒ c2=4(π)[(π)r2]

As (π)r2=A ⇒c2=4(π)A

<u>Therefore:</u>

A=c2/4(π)

4 0
2 years ago
A couple plans to have 3 children, what is the probability that atleast two will be boys?
Olin [163]

1/4 or 25 percent because there is a 1/2 chance to get a boy or girl so the probability that will be boys us 1/2 x 1/2= 1/4

6 0
3 years ago
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The distance betwee<br> 4. C(0,0), D(5,2)
MAXImum [283]

Answer:

\sqrt{29}

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What is the equatipn of the linear graph?<br> (-4, 6).<br> (1, -9)
dusya [7]

Answer:

y = -3x - 6

Step-by-step explanation:

first, find the slope

(-4, 6)

(1, -9)

remember the equation for the slope

\frac{y_{2}-y_{1}}{x_{2} - x_{1}} }

insert given points

x_{1} = -4\\y_{1} = 6\\\\x_{2} = 1\\y_{2} = -9

((-9) - (6)) / ((1) - (-4))

simplify

( -9 - 6) / (1 + 4)

= -15/ 5

= -3

now insert it into the equation of the line

remember, the equation of the line is

y = mx + b

where "m" is the slope

and "b" is the y-intercept

to find "b", you just have to plug in a point that is found on the line

we know that (-4, 6) and (1. -9) is found on the line, so let's just use (-4, 6) for this problem

y = mx + b

substitute in the slope of this line

y = -3x + b

now substitute in the given points

6 = -3 * -4 + b

and solve it like any algebra problem, by inverse operations and simplifying

6 = 12 + b

-12      -12

-6 = b

so the equation of the line is

y = -3x -6

3 0
3 years ago
Solve for x in the diagram below.
Elden [556K]

Answer:

x = 45

Step-by-step explanation:

180 = (2x + 45) + x

135 = 2x + x

135/3 = 3x/3

45 = x

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2 years ago
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