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2 years ago

Please help :((

Mathematics

1 answer:

yanalaym [24]2 years ago

5 0

Answer:

C = 2 * π * R = 2 * π * 14 = <u>87.9646 cm</u>

Step-by-step explanation:

All this means is that the perimeter, or circumference, is the distance or length around a shape or object. And the area is the amount of space inside the thing.

In today’s geometry lesson, you will review the formulas for finding the area and perimeter of basic geometric shapes.

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(Giving LOTS OF POINTS!!!) What is the discriminant of the following equation: x^2 − 2x + 2 = 0 Options: -8 -4 -12 12

frosja888 [35]

Answer:

-4

Step-by-step explanation:

Discriminant = b² - 4ac

= 4 - 4(1)(2)

= 4 - 8

= -4

6 0

3 years ago

Read 2 more answers

A circle has a diameter of 4 meters.

Slav-nsk [51]

Answer:

Step-by-step explanation:

r = d/2

r = 4/2

r = 2

pi = 3.14

Circumference = 2 * pi * r

Circumference = 2 * 3.14 * 2

Circumference = 12.56

Area = pi r^2

Area = 3.14 * 2^2

Area = 4 * 3.14

Area = 12.56

7 0

3 years ago

CAN SOMEONE PLS ANSWER-If W(- 10, 4), X(- 3, - 1) , and Y(- 5, 11) classify AEXY by its sides . Show all work to justify your an

AnnZ [28]

Answer:

WX = $\sqrt{74} \approx 8.6023253\\\\$
XY = $2\sqrt{37} \approx 12.1655251\\\\$
WY = $\sqrt{74} \approx 8.6023253\\\\$
Classify: Isosceles

============================================================

Explanation:

Apply the distance formula to find the length of segment WX

W = (x1,y1) = (-10,4)

X = (x2,y2) = (-3, -1)

$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-10-(-3))^2 + (4-(-1))^2}\\\\d = \sqrt{(-10+3)^2 + (4+1)^2}\\\\d = \sqrt{(-7)^2 + (5)^2}\\\\d = \sqrt{49 + 25}\\\\d = \sqrt{74}\\\\d \approx 8.6023253\\\\$

Segment WX is exactly $\sqrt{74}$ units long which approximates to roughly 8.6023253

-------------------

Now let's find the length of segment XY

X = (x1,y1) = (-3, -1)

Y = (x2,y2) = (-5, 11)

$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-3-(-5))^2 + (-1-11)^2}\\\\d = \sqrt{(-3+5)^2 + (-1-11)^2}\\\\d = \sqrt{(2)^2 + (-12)^2}\\\\d = \sqrt{4 + 144}\\\\d = \sqrt{148}\\\\d = \sqrt{4*37}\\\\d = \sqrt{4}*\sqrt{37}\\\\d = 2\sqrt{37}\\\\d \approx 12.1655251\\\\$

Segment XY is exactly $2\sqrt{37}$ units long which approximates to 12.1655251

-------------------

Lastly, let's find the length of segment WY

W = (x1,y1) = (-10,4)

Y = (x2,y2) = (-5, 11)

$d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-10-(-5))^2 + (4-11)^2}\\\\d = \sqrt{(-10+5)^2 + (4-11)^2}\\\\d = \sqrt{(-5)^2 + (-7)^2}\\\\d = \sqrt{25 + 49}\\\\d = \sqrt{74}\\\\d \approx 8.6023253\\\\$

We see that segment WY is the same length as WX.

Because we have exactly two sides of the same length, this means triangle WXY is isosceles.

8 0

3 years ago

Let the marked price be x .if you buy a radio for rs 1350 at 25% discount,find marked price.

Stella [2.4K]

Step-by-step explanation:

Marked price (MP) = x

Selling Price after discount (SP after discount)

= Rs. 1350

Discount rate = 25%

Now

SP after discount = MP - discount % of MP

1350 = x - 25 % of x

1350 = x - x / 4

1350 = 3x / 4

1350 * 4 =3x

5400 / 3 = x

Therefore x = Rs. 1800

The marked price is Rs. 1800

4 0

3 years ago

Write -5x-12y=12 in slope intercept form

TiliK225 [7]

Answer:

y = (-5/12)x - 1

Step-by-step explanation:

The fastest way in which to express -5x-12y=12 in slope-intercept form is to solve -5x-12y=12 for y:

Add 5x to both sides, obtaining -12y = 12 + 5x.

Next, divide both sides by -12, obtaining y = -1 - (5/12)x, or y = (-5/12)x - 1.

6 0

4 years ago