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3 years ago

14

Damon has five dimes and some nickels in his pocket, worth of a total of $1.20. To find the number of nickels Damon has a, stude

nt wrote the equation 5n + 50 = 1.29. Find the error in the students equation

1 answer:

Agata [3.3K]3 years ago

6 0

The answer to the equation should be in cents whereas it is in dollars which would be incorrect

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3 years ago

What is the volume of a cone with a radius of 6cm and a height of 12cm?

kompoz [17]

Answer:

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By putting the values,

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Will give brainliest, please help fast

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Answer:

Converting the equation $x^2-20x+13=0$ into completing the square method we get: $\mathbf{(x-10)^2=87}$

Step-by-step explanation:

we are given quadratic equation: $x^2-20x+13=0$

And we need to convert it into completing the square method.

Completing the square method is of form: $a^2-2ab+b^2=(a-b)^2$

Looking at the given equation $x^2-20x+13=0$

We have a = x

then we have middle term 20x that can be written in form of 2ab So, we have a=x and b=? Multiplying 10 with 2 we get 20 so, we can say that b = 20

So, 20x in form of 2ab can be written as: 2(x)(10)

So, we need to add and subtract (10)^2 on both sides

$x^2-20x+13=0\\x^2-2(x)(10)+(10)^2-(10)^2+13=0\\(x^2-2(x)(10)+(10)^2) \:can\: be\: written\: as\: (x-10)^2 \\(x-10)^2-100+13=0\\(x-10)^2-87=0\\(x-10)^2=87$

So, converting the equation $x^2-20x+13=0$ into completing the square method we get: $\mathbf{(x-10)^2=87}$

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3 years ago

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Step-by-step explanation:

bro its not that hard, y1-y2 divided by x1-x2

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Jlenok [28]

Answer:

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