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3 years ago

I spent $3 for every $8 saved. In all, I saved $200. How much more money did I save than spend?

Mathematics

2 answers:

geniusboy [140]3 years ago

5 0

3 x 8 + 200
24 + 200
224

Pani-rosa [81]3 years ago

3 0

(3x8) + 200
24 + 200
=224

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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

A group of circus bears made a pyramid. 3 bears fell of the top, leaving 3 on the bottom. How many bears made the pyramid?

kvasek [131]

Answer:

6, right?

Step-by-step explanation:

6 0

3 years ago

Evaluate the derivative of the given function for the given value of x. Yequalsstartfraction 3 x minus 6 over 4 x plus 5 endfrac

geniusboy [140]

no rurio greob tryo yeu

3 0

3 years ago

3/4-1/8=? thank you❣️

Helen [10]

Convert them into similar fractions, so you take 3/4 and multiply the top and bottom by 2. Now you have 6/8

So, you do not subtract the denominators (bottom number) only the numerators (top number).

6-1 = 5

Afterwards, you put it back over 8, giving you 5/8

7 0

3 years ago

#20 can you help????

Ipatiy [6.2K]

I think It might be 136 because 1c=8 oz and 1g=128 oz and adding that together is equal to 136

4 0

3 years ago

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