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3 years ago

The area of a semicircle is A=1/2(3.14)r^2 solve for r

Mathematics

1 answer:

Inessa05 [86]3 years ago

7 0

First divide bot sides of the formula by 1/2(3.14):-

2A / 3.14 = r^2

r = sqrt (2A/3.14)

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Write the inequality for the graphs

Irina18 [472]

A. -3 < x < 1
b. x < = 4 or x > = 6

4 0

3 years ago

Use point-slope form to write the equation of a line that passes through the point

Ymorist [56]

Answer:

y= -2x-22.

Step-by-step explanation:

1) the slope-interception common form is y=s*x+i, where 's' and 'i' are the slope and interception, unknown numbers;

2) if x₁= -3; y₁= -16, and s=-2, then the equation of the required line can be written in the point-interception form y-y₁=s(x-x₁); ⇔ y+16= -2(x+3);

3) the required equation in slope-interception form is:

y+16= -2x-6; ⇒ y= -2x-22.

note, the provided solution is not the only and shortest way.

5 0

2 years ago

The monthly salaries of a sample of 100 employees were rounded to the nearest ten dollars. they ranged from a low of $1,040 to a

never [62]

1720 - 1040 = 680
680/7 = 97.1

I would put them in intervals of 100

6 0

3 years ago

Find the coordinates of the other endpoint of the segment, given its midpoint and one endpoint. (Hint: Let (x,y) be the unkno

makkiz [27]

Step-by-step explanation:

Hey, there!!

Here, one point is A(10,8) and P(8,5) is the midpoint.

Let B(x,y) be the another end point.

Now,

Using midpoint formulae,

$p(x.y) = \frac{x1 + x2}{2} . \frac{y1 + y2}{2}$

$p(8.5) = ( \frac{10 + x}{2} . \frac{8 + y}{2} )$

Since they are equal,equating with their corresponding elements we get,

$8 = \frac{10 + x}{2}$

or, 16 = 10 + x

or, x=16-10

Therefore, x = 6

Now,

$5 = \frac{8 + y}{2}$

or, 10 = 8 + y

or, y = 2

Therefore, The coordinates of another point are B(6,2)

Hope it helps .....

8 0

4 years ago

gizmo_the_mogwai [7]

Answer:

the selling price is $28.50

i m confused on part b if you explain it i could help

Step-by-step explanation:

6 0

3 years ago