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3 years ago

Question 7 Which set of side lengths can be used to form a right triangle?

Mathematics

1 answer:

olga2289 [7]3 years ago

6 0

Answer:

D.30,40,50

Step-by-step explanation:

A.4,5,6

B.2,3,4

C.10,20,30

D.30,40,50

The Pythagoras theorem : a² + b² = c²

where a = length

b = base

c = hypotenuse

4² + 5² = 25 is not equal to the square of 6 which is 36

2² + 3² = 10 . 10 is not equal to the square of 4 which is 16

10² + 20³ = 500. 500 is not equal to the square of 30 which is 900

30² + 40² = 2500. this is equal to the square of 50

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What is the smallest degree of rotation that will map a regular 18 gon on to itself

natali 33 [55]

Answer:

20°

Step-by-step explanation:

Rotating the figure through an angle equal to the central angle of one "sector" will do the required mapping. That is 360°/18 = 20°.

5 0

3 years ago

V +25 <5 And show work. PLZ HELP MEH I DONT KNOWWWWW

lisabon 2012 [21]

Answer:

V+25<5

V<5-25

V<-20

V is less than -20

8 0

3 years ago

Please help ill give u points

Kipish [7]

Answer:

Olá, tudo bem? 

Me chamo Ana Kesia, muito prazer.

Nn entendi sua pergunta! 

Mais, mesmo assim obrigada pelos pontos.

8 0

3 years ago

Solve the system by substitution.

tino4ka555 [31]

As we know y=3/4x-3
Let's put it in the second equation
3/4x-3=1/4x+1
3/4 x -1/4 x = 1+3
2/4 x = 4
X= 4*4/2
x=8
Put x= 8 in first equation
y= 3/4 *8 -3
y=6-3
y=3
Check the answer
3=3/4 *8 -3
3=6-3
3=3
Correct
So(y, x) = (3,8)
Because x=8 and y=3

3 0

3 years ago

Suppose that f(x)=3x+1....

skad [1K]

Answer:

Step-by-step explanation:

f(x) = 3x+1

f(x+h) = 3(x+h)+1 = 3x+3h+1

f(x+h) - f(x)= 3x+3h+1-3x-1 = 3h

3h/h=3

4 0

2 years ago