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Svetlanka [38]
3 years ago
11

Is .57 repeated, irrational or rational

Mathematics
1 answer:
Mama L [17]3 years ago
6 0
Rational. This is kind of a trick question because rational numbers don't repeat but irrational numbers do.
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9 is what percent of 20?
liberstina [14]
So percent means parts out of 100 so
1%=1/100

so 9/20=x/100
a hack withought using legit math is
20 times 5=100 so
9/20 times 5/5=x/100
9 times 5=45
20 times 5=100
45/100
45% is the answer
8 0
3 years ago
What is the area if the shape above
IgorLugansk [536]

Answer:

I'd be happy to help, but I can't see the image! Maybe you can try editing your current one or reposting another one! :)

Step-by-step explanation:

8 0
3 years ago
Evaluate the expressions and match them to the integers.
alexira [117]

Answer:

See below.

Step-by-step explanation:

-7(6) = -42

-1(-10) = 10

2(-5) = -10

-3(-14) = 42

-32/-4 = 8

-2(-2)(-2) = -8

4 0
3 years ago
determine the quadratic function f whose graph is given. the vertex is (2,-7) and the y-intercept is -3
Marina CMI [18]

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8 0
4 years ago
The sum of squares of three consecutive numbers is 77 find the numbers​
ollegr [7]

Answer:

4,5,6 are the three consecutive numbers. 16, 25 and 36 are their squares.

Step-by-step explanation:

Let the three consecutive numbers be x, (x+1), (x+2)

Now, the squares of these three numbers are  x^{2} ,(x+1)^{2} ,(x+2)^{2}

Sum = 77

∴by the problem ,

x^{2} +(x+1)^{2}+(x+2)^{2}  = 77\\x^{2} +(x^{2} +2x+1)+(x^{2}+4x +4) = 77\\x^{2} +x^{2} +2x+1+x^{2} +4x +4 = 77\\3x^{2} +6x+5 = 77\\3x^{2} +6x = 77-5\\3x^{2} + 6x = 72\\3x^{2} +6x-72= 0\\

{Taking 3 common }

x^{2} +2x- 24 = 0\\

{By factorization}

x^{2} +2x- 24 =0\\ x^{2} +6x-4x-24=0\\x(x+6)-4(x+6)=0\\(x+6)(x-4)=0\\

Therfore,

x= -6,4\\

<em>X can't be negetive </em>

∴ x =4\\x+1=5\\x+2=6

The squares of the three consecutive numbers are 16, 25, 36

The three consecutive numbers whose sum is 77 are 4, 5, 6

3 0
4 years ago
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