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3 years ago

Can someone please help me out with this. I need this done by tomorrow. :(

Mathematics

2 answers:

Lera25 [3.4K]3 years ago

7 0

Answer:

i got u its UMMMMMMMMMMMMMMMMMMMMM nvm

Step-by-step explanation:

Nikolay [14]3 years ago

6 0

Just multiply and you’ll get the answer

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Find the coordinates of the circumcenter of △PQR with vertices P(−2,5), Q(4,1), and R(−2,−3).

mel-nik [20]

Answer: (1/3,2)

Step-by-step explanation:

Let O(x,y) be the circumference of the triangle PQR,

Thus, by the property of circumcenter all the vertices of the triangle are at same distance from this circumcenter.

Thus, PO = QO

By the distance formula,

$(x+2)^2+(y-5)^2 = (x-4)^2+(y-1)^2$

$\impliesx^2+ 4x + 4 + y^2+ 25 - 10 y = x^2+16 - 8 x + y^2+1 - 2y$

$\implies 4x + 4 + 25 - 10 y = 16 - 8 x + 1 - 2y$

$\implies 4x +8x-10y+2y = 16 + 1 -25-4$

$\implies 12x - 8y = 17 - 29$

$\implies 12 x - 8 y = - 12$ ---------(1)

Similarly, QO = RO

$\implies (x-4)^2 + (y-1)^2 = (x+2)^2+(y+3)^2$

$\implies x^2 + 16 - 8x + y^2+ 1 - 2y = x^2+ 4 + 4 x +y^2+ 9 + 6 y$

$\implies 16 - 8x + 1 - 2y = 4 + 4 x + 9 + 6 y$

$\implies - 8x -4x-2y-6y=4+9-16-1$

$\implies -12 x - 8 y = 13 - 17$

$\implies 12 x + 8 y = 4$ ------------(2)

By adding equation (1) and (2),

24 x = - 8

x = 1/3

By putting this value in equation (1),

We get,

Thus, 4 - 8 y = -12

8 y = 16

y = 2

7 0

3 years ago

It is 30 points and will give brainliest

allochka39001 [22]

Answer:

4a2−4ab+b2

Step-by-step explanation:

(2a−b)2 =(2a+−b)(2a+−b)

=(2a)(2a)+(2a)(−b)+(−b)(2a)+(−b)(−b)

Sooo our equation =4a2−2ab−2ab+b2

Hoped I helped -

Sleepy~

7 0

3 years ago

Find measure jk <br> Answers are 52, 128, 154 & 180

Mamont248 [21]

Answer:

b. 128°

Step-by-step explanation:

arc LJ = 2 (26) = 52°

arc KL = 180° (half circle)

arc JK = 360° - (arc LJ + arc KL)

arc JK = 360° - 232°

arc JK = 128°

Answer

b. 128°

8 0

4 years ago

To determine customer satisfaction with their service department, an automobile dealer randomly selects 20 hybrid-vehicle owners

Brrunno [24]

Answer:

The answer is stratified.

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

What the answer to <br> 4 x 4 x 4

serious [3.7K]

4x 4 x 4 = 64. I hope this helps.

3 0

3 years ago