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3 years ago

Help me plz plz i need help

Mathematics

1 answer:

adoni [48]3 years ago

5 0

Try 3.14 times 18 dived by 2 might help because formula is /2

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What is the least common denominator for 1/2 & 2/3 ?

IrinaVladis [17]

Answer: 6

Step-by-step explanation:

1/2 = 3/6

2/3 = 4/6

4 0

3 years ago

{1,3,5,7,9,11} find the subsets and proper subsets

vaieri [72.5K]

Answer:

Step-by-step explanation:

now gimme a brainliest

6 0

3 years ago

a wire of length 200 cm is cut into two parts and each part is bent to form a square.If the area of the larger square is 9 times

diamong [38]

Answer:

The perimeter of the larger square is $150cm.$

Step-by-step explanation:

First of all, let one part of it be " $x$ "

and the other part of it " $200-x$ "

Now to solve this :

The area of the square = $L^2$

The area of one part of the square = $x^2$

The area of the other part of the square = $(200-x)^2$

$9x^2= (200-x)^2\\9x^2=40000-400x+x^2$

Now, add, $-4x^2$ to both the sides :

$9x^2-9x^2=40000-400x+x^2-9x^2\\-1(8x^2+400x-40000)=0$

Now, take out the "8" which is common :

$-8(x^2+50x-5000)=0$

Now, divide it by $-8$ :

$x^2+100x-50x-5000=0\\x(x+100)-50(x+100)=0\\(x+100)(x-50)=0\\$

$x=-100$ or $50$

So, now we know that :

One of the part is = $50cm$

And the other part is = $150cm$

Thus the perimeter of the larger square is = $150cm$

3 0

3 years ago

Identify two ratios that are equivalent to 3:5

s344n2d4d5 [400]

The correct answer is 15:25

7 0

3 years ago

At a children's concert there were 80 boys. There were 1 1/2 times the number of girls as boys. What percentage of the total num

beks73 [17]

Answer:

60% are girls

Step-by-step explanation:

80 x 1.5 = 120 which is the amount of girls

120 out of 200 is 12/20 or 3.5 which is 60%

4 0

3 years ago