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joja [24]
3 years ago
7

Is (-1,0),(2,1),(0,6),(-5,-3),(-1,8) a function (how is it a function?)

Mathematics
1 answer:
Helga [31]3 years ago
8 0

Answer:

no

Step-by-step explanation:

Look at the x's if they repeat then its not a function

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Pls help 15. Find the exact area of the shaded region of the circle shown in the diagram.
konstantin123 [22]

Answer:

  • The shaded region is 9.83 cm²

Step-by-step explanation:

<em>Refer to attached diagram with added details.</em>

<h2>Given </h2>

Circle O with:

  • OA = OB = OD - radius
  • OC = OD = 2 cm

<h2>To find</h2>

  • The area of segment ADB.

<h2>Solution</h2>

Since r = OC + CD, the radius is 4 cm.

Consider right triangles OAC or OBC:

  • They have one leg of 2 cm and hypotenuse of 4 cm, so the hypotenuse is twice the short leg.

Recall the property of 30°x60°x90° triangle:

  • a : b : c = 1 : √3 : 2, where a- short leg, b- long leg, c- hypotenuse.

It means OC: OA = 1 : 2, so angles AOC and BOC are both 60° as adjacent to short legs.

In order to find the shaded area we need to find the area of sector OADB and subtract the area of triangle OAB.

Area of <u>sector:</u>

  • A = π(θ/360)r², where θ- central angle,
  • A = π*((mAOC + mBOC)/360)*r²,
  • A = π*((60 + 60)/360))(4²) =  16.76 cm².

Area of<u> triangle AO</u>B:

  • A = (1/2)*OC*(AC + BC),  AC = BC = OC√3 according to the property of 30x60x90 triangle.
  • A = (1/2)(2*2√3)*2 = 4√3 = 6.93 cm²

The shaded area is:

  • A = 16.76 - 6.93 = 9.83 cm²

8 0
2 years ago
Which relation is a functiona) {(2.4), (2,-7) (2,11), (2,-15)}
tia_tia [17]
D is a function  because  there are no repeated x values 

for example b is not a function because we have (0,-7) and (0,-9)
6 0
3 years ago
Hour how much does davon charge per hour for a skateboard rental HELPP I BEG
Setler79 [48]

Answer:

$7

Davon charges $7 per hour of rental

6 0
3 years ago
Please help! Need answer ASAP!
REY [17]
ANSWER:

A ) It also increases.

EXPLANATION:

When the measure of angle A increases im the trianes, the measure of angle A on line p also increases. This is angle A in the triangle and angle A on line p are equivalent to each other. Hence, if there is an increase to one of the angle As then there is also an increase to the other.

Therefore, the answer must be:

A ) It also increases.
8 0
3 years ago
Read 2 more answers
The temperature at the center of the sun, where thermonuclear processes take place, is approximately 1. 4500 k, as shown by suns
frosja888 [35]
The answer is 3. i hope this helped
7 0
3 years ago
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