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3 years ago

What is the length of the blue in the circle o below

Mathematics

2 answers:

iVinArrow [24]3 years ago

8 0

Answer:

Option D. 8.53 units

Step-by-step explanation:

we know that

The triangle OAB is congruent with the triangle OCD

because

OA=OB=OC=OD=radius circle O

AB=CD

therefore

The height of both triangles is equal to 8.53 units

The segment blue is equal to 8.53 units

Ganezh [65]3 years ago

3 0

Answer:

D. 8.53 units

Step-by-step explanation:

In the given circle, we can form two triangles:

i) ΔAOB connecting the radius OA and OB

ii) ΔCOD connecting the radius OC and OD.

We know that all the radius in a circle are the same measure.

We are given AB = 12.48 = CD 12.48 units.

Therefore, by SSS (Side-side-side) postulate the triangles AOB and COD are the congruent.

Therefore, the height of the triangle must be equal.

The height of triangle AOB is 8.53 units

The blue line is the height of the triangle COD.

Therefore, the length of the blue is 8.53 units.

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What is the volume of a hemisphere with a radius of 2.1 m, rounded to the nearest tenth of a cubic meter?

Art [367]

Answer:

The volume of hemisphere is 19.4 cubic meter.

Step-by-step explanation:

Given:

A hemisphere is with a radius of 2.1 m.

Now, to find the hemisphere volume with radius 2.1 m.

$Radius\ (r) = 2.1 m.$

So, we put formula to get the volume of hemisphere:

$Volume=\frac{2}{3} \pi r^3\ \ \ \ \ (Taking\ the\ value\ of\ \pi =3.14)\\\\Volume=\frac{2}{3} \times 3.14\times 2.1^3\\\\Volume=\frac{2}{3} \times 3.14\times 9.26\\\\Volume=19.384\ cubic\ meter.$

Hence, the rounded to the nearest tenth of a cubic meter is 19.4 cubic meter.

Therefore, the volume of hemisphere is 19.4 cubic meter.

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2 years ago

the proper scientific notation for 676,000,000,000 is a. .676 × 1012 b. 6.76 × 1011 c. 67.6 × 1010 d. 676 × 109

Iteru [2.4K]

The answer is either c of d but if I had to pick one I would say C.

8 0

2 years ago

Consider this system of equations. x + 2y = 5, –x + 3y = 6 The x- and y-intercepts of the first equation are found below. x-in

vichka [17]

Answer:

Part 1) The x-intercept is the point (-6,0)

Part 2) The y-intercept is the point (0,2)

Step-by-step explanation:

we know that

The x-intercept is the value of x when the value of y is equal to zero

The y-intercept is the value of y when the value of x is equal to zero

we have

$-x+3y=6$

Part 1) Find the x-intercept

For y=0

substitute the value of y in the linear equation and solve for x

$-x+3(0)=6$

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The x-intercept is the point (-6,0)

Part 2) Find the y-intercept

For x=0

substitute the value of x in the linear equation and solve for y

$-(0)+3y=6$

$3y=6$

$y=2$

The y-intercept is the point (0,2)

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NO LINKS PLEASE I ACTUALLY NEED HELP THEY'RE 2 PARTS

eimsori [14]

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Ludmilka [50]

Answer:

Step-by-step explanation:

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2 years ago

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