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Mathematics, 21.01.2020 20:31 softballlover487

2. the coordinates of the vertices of abc are a (5, 2), b (2, 4), and c (7, 5). determine whether abc is a right triangle.

3. the coordinates of the vertices of quadrilateral qrst are q (5, 1), r (8, 7), s (14, 10) and t (10, 2). iron man states that quadrilateral qrst is a parallelogram. prove or disprove iron man’s statement. explain your method (fill out the brainstorming area) and show your work.

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Answer from: hePandaKing3750

Part 2) Triangle ABC is a right triangle (see the explanation)

Part 3) Quadrilateral QRST is not a parallelogram (see the explanation)

Step-by-step explanation:

Part 2) we have

A (5, 2), B (2, 4), and C (7, 5)

Plot the figure to better understand the problem

see the attached figure

we know that

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

step 1

Find the length side AB

A (5, 2), B (2, 4)

substitute the values in the formula

$d=\sqrt{(4-2)^{2}+(2-5)^{2}}$

$d=\sqrt{(2)^{2}+(-3)^{2}}$

$d_A_B=\sqrt{13}\ units$

step 2

Find the length side BC

B (2, 4), C (7, 5)

substitute the values in the formula

$d=\sqrt{(5-4)^{2}+(7-2)^{2}}$

$d=\sqrt{(1)^{2}+(5)^{2}}$

$d_B_C=\sqrt{26}\ units$

step 3

Find the length side AC

A (5, 2), C (7, 5)

substitute the values in the formula

$d=\sqrt{(5-2)^{2}+(7-5)^{2}}$

$d=\sqrt{(3)^{2}+(2)^{2}}$

$d_A_C=\sqrt{13}\ units$

step 4

Verify if the triangle ABC is a right triangle

we know that a right triangle must satisfy the Pythagorean Theorem

so

BC^2=AB^2+AC^2

Remember that the hypotenuse is the greater side

substitute the values

$(\sqrt{26})^2=(\sqrt{13})^2+(\sqrt{13})^2$

26=13+13

26=26 ----> is true

therefore

Triangle ABC is a right triangle

Part 3) we have

Q (5, 1), R (8, 7), S (14, 10) and T (10, 2)

we know that

The opposite sides of a parallelogram are parallel and congruent

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

Step 1

Find the length side QR

Q (5, 1), R (8, 7)

substitute in the formula

$d=\sqrt{(7-1)^{2}+(8-5)^{2}}$

$d=\sqrt{(6)^{2}+(3)^{2}}$

$d_Q_R=\sqrt{45}\ units$

Step 2

Find the length side RS

R (8, 7), S (14, 10)

substitute in the formula

$d=\sqrt{(10-7)^{2}+(14-8)^{2}}$

$d=\sqrt{(3)^{2}+(6)^{2}}$

$d_R_S=\sqrt{45}\ units$

Step 3

Find the length side ST

S (14, 10), T (10, 2)

substitute in the formula

$d=\sqrt{(2-10)^{2}+(10-14)^{2}}$

$d=\sqrt{(-8)^{2}+(-4)^{2}}$

$d_S_T=\sqrt{80}\ units$

Step 4

Find the length side QT

Q (5, 1), T (10, 2)

substitute in the formula

$d=\sqrt{(2-1)^{2}+(10-5)^{2}}$

$d=\sqrt{(1)^{2}+(5)^{2}}$

$d_Q_T=\sqrt{26}\ units$

Step 5

Compare the length of the opposite sides

QR and ST

$\sqrt{45}\ units \neq \sqrt{80}\ units$

$d_Q_R \neq d_S_T$

RS and QT

$\sqrt{45}\ units \neq \sqrt{26}\ units$

$d_R_S \neq d_Q_T$

Opposite sides are not congruent

therefore

Quadrilateral QRST is not a parallelogram

2. the coordinates of the vertices of abc are a (5, 2), b (2, 4), and c (7, 5). determine whether 

ansver

Answer from: Quest

answer: 26

step-by-step explanation:

well, michelle wanted to measure the height of her school's flagpole she placed a mirror on the ground 48 feet from the flagpole then walk backwards until she was able to see the top of the pole in the mirror her eyes were 5 feet above the ground and she was 12 ft from the mirror using similar triangles find the height of the flagpole to the nearest tenth of a foot find the geometric mean of them pair of numbers. its easy math

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Answer from: Quest

the transverse axis of a hyperbola is the line that contains the two vertices and the two focuses.

in this example (hyperbola of equation x^2/2 - y^2/4 = 1), the transverse axis is the x-axis .

step-by-step explanation:

Which of the following statements best describes the transverse axis of a hyperbola?

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