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2 years ago

(1/2)²+(2/3)². . . ................

Mathematics

1 answer:

Hunter-Best [27]2 years ago

8 0

Answer:

0.61

Step-by-step explanation:

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You are reading a book that has 560 pages. You have read about 11/20 of the book. What percent of the book have you read

Assoli18 [71]

11/20 x 5/5 = 55/100
.55 = 55%

4 0

2 years ago

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There is a balcony that forms part of a circle around a stage, and they need to put up a safety railing. How long of a railing d

alexandr1967 [171]

A sector is a part of a circle that is formed by two radii, and an arc. So that the length of the safety railing required is 31.4 feet.

A sector is a part of a circle that is formed by two radii, and an arc, thus forming a central angle.

Thus the required length of safety railing can be considered as the arc of the sector.

So that;

length of an arc = (θ / $360^{o}$ ) * 2 $\pi$ r

where θ is the measure of the central angle of the sector, and r is the radius of the sector.

From the given question, θ = 45°, and r = 40 feet.

So that,

length of the safety railing = (45° / $360^{o}$ ) * 2 * 3.14 * 40

= 0.125 * 2* 3.14* 40

length of safety railing = 31.4

Therefore, the length of the safety railing required is 31.4 feet.

For more clarifications on the length of an arc, visit: brainly.com/question/2005046

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6 0

1 year ago

I NEED HELP !! PICTURE IS UP THERE ^

Fynjy0 [20]

Answer:

$\angle 1 = 99^\circ$

$\angle 3 = 99^\circ$

$\angle 4 = 81^\circ$

Step-by-step explanation:

Given

$\angle 2 = 81^\circ$

Required

Determine: $\angle 1 . \angle 3 , \angle 4$

Solving for $\angle 1$ , we have:

$\angle 2 + \angle 1 = 180^\circ$ --- angle on a straight line

So, we have:

$\angle 1 = 180^\circ-\angle 2$

$\angle 1 = 180^\circ-81^\circ$

$\angle 1 = 99^\circ$

To solve for $\angle 3, \angle 4$ , we have:

$\angle 3 = \angle 1$

$\angle 4 = \angle 2$ --- Vertically opposite angles

So:

$\angle 4 = 81^\circ$

$\angle 3 = 99^\circ$

4 0

2 years ago

FYI I thank to everyone and give brainliest!!!!!!!!!

Kobotan [32]

To find (f+g)(x), add the equations and simplify by combining like terms.

(x/2)-2+2x^2+x-3
2x^2+ (x/2) +x -5
2x^2 + (1/2)x+x -5
2x^2+ (3/2)x -5

Final answer: C

Remember that (x/2) is the same as (1/2)x. They both represent half of x.

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2 years ago

The equation of the line of best fit of a scatter plot is y = 7x − 9. What is the slope of the equation?

damaskus [11]

The slope of the equation is 7 hope this helps you

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3 years ago

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