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3 years ago

1/2 minus 2/3 minus 3/4 divided by 1/4

Mathematics

1 answer:

amm18123 years ago

7 0

I believe that the answer would be -0.35416666666

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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

Please answer kxjjsjnsssmsmmxmdmxmxmmxx

elena-s [515]

What................?

4 0

2 years ago

Read 2 more answers

Please answer both questions.

mario62 [17]

Answer:

1) (x-6)^2=49

2) C

Step-by-step explanation:

Subtract 12 x and you get

-x^2-12x+13=0

You will be left with, after making a perfect square

(x-6)^2=49

To get rid of the squared/2nd power, add plus or minus to the opposite side and square root both sides. You will be left with

x-6=plus or minus 7

Your answer comes out to the to problem. Setting both to 0, you get -13, and 1. -6 plus 7 is 1, and -6 plus a -7 is -13.

6 0

1 year ago

Find the product. -a 2b 2c 2(a + b - c)

ratelena [41]

Answer:

I think the answer is

${ - 8a}^{2} {b}^{2} - {8ab}^{3} + {8ab}^{2} c$

4 0

3 years ago

What is the value of a + b?

jolli1 [7]

Answer:

125

Step-by-step explanation:

A is an inscribed angle. The central angle is 90, so angle A is 45.

110/2 = 55

180 - 45 - 55 = 80

Angle B is 80.

80 + 45 = 125

5 0

3 years ago