3 years ago

2 Divided by 1 / 5. Rlly need help on this

Mathematics

1 answer:

Natasha_Volkova [10]3 years ago

3 0

Answer:

The answer will be 10

Step-by-step explanation:

2/1/5=10

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Step-by-step explanation:

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3 years ago

One positive integer is 6 less than twice another. The sum of their squares is 801. Find the integers

xxTIMURxx [149]

Answer:

$\large \boxed{\sf 15 \ \ and \ \ 24 \ \ }$

Step-by-step explanation:

Hello,

We can write the following, x being the second number.

$(2x-6)^2+x^2=801\\\\6^2-2\cdot 6 \cdot 2x + (2x)^2+x^2=801\\\\36-24x+4x^2+x^2=801\\\\5x^2-24x+36-801=0\\\\5x^2-24x-765=0\\\\$

Let's use the discriminant.

$\Delta=b^4-4ac=24^2+4*5*765=15876=126^2$

There are two solutions and the positive one is

$\dfrac{-b+\sqrt{b^2-4ac}}{2a}=\dfrac{24+126}{10}=\dfrac{150}{10}=15$

So the solutions are 15 and 15*2-6 = 30-6 = 24

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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