All categories

3 years ago

The sets of numbers 3, 4, 5 and 5, 12, 13 are examples

Mathematics

2 answers:

Wewaii [24]3 years ago

8 0

Answer:

8, 15, 17 — yes
15, 20, 25 — yes
20, 48, 52 — yes
2, 9, 11 — no
39, 80, 89 — yes

Step-by-step explanation:

The squares of the three numbers in each of the given triples are listed. When the sum of the first two numbers is equal to the third, the set of numbers in the triple is a Pythagorean triple.

{64, 225, 289}, yes

{225, 400, 625}, yes — a 3,4,5 triple multiplied by 5

{400, 2304, 2704}, yes — a 5,12,13 triple multiplied by 4

{4, 81, 121}, no*

{1521, 6400, 7921}, yes.

___

* the smallest set of integers that is a Pythagorean triple is {3, 4, 5}. The number 2 in this group tells you this cannot be a PT.

7nadin3 [17]3 years ago

5 0

Answer:

15 20 25 yes

Step-by-step explanation:

You might be interested in

Describe the transformation that would Change f(x) in the following ways: 1. Vertical reflection across the x axis 2. Vertical s

ElenaW [278]

You have to add the same number to keep

3 0

2 years ago

What is the approximate value of k?

lesya692 [45]

Hello from MrBillDoesMath!

Answer:

5.06

Discussion:

Angle J = 180 - (120 + 40) = 180 - 160 = 20 degrees,

From the law of sines

sin(120)/k = sin(20)/2 =>

sin(120) = k * ( sin(20)/2) ) (multiply both sides by "k")

k = sin(120)/ ( sin(20)/2) (divide both sides by sin(20)/2)

k = (0.866) / ( 0.171) = 5.06

Regards,

MrB

P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!

6 0

3 years ago

The length of a rectangle is 4 less than twice the width. If the perimeter of the rectangle is 130, find the length of the recta

Alchen [17]

Answer:

Let L be the length of the rectangle and w be the width of the rectangle.

"The lenght of a rectangle is one less than twice the width" means L=2W-1

Using perimeter formula of a rectangle which is P=2(L+W) you have:

P=2(L+W)

130=2(2W-1+W)

Solve equation above to find W

130=2(3W-1)

130=6W-2

130+2=6W

132=6W

W=22

From here you find L=2W-1=2x22-1=43

Only thing left is to find area A=LxW

4 0

3 years ago

Plz help 2×3+6×9×2×1×4-68-1+86= plz help

nordsb [41]

The final answer would be 455

5 0

3 years ago

Feliz [49]

Answer:

PRT%

Step-by-step explanation:

PRT

$= 320 \times 2.3 \times 20 \div 100 = 1472$

5 0

3 years ago