3 years ago

Is this how you work this out or am I doing it wrong

Mathematics

1 answer:

Sauron [17]3 years ago

8 0

You’re doing it right

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2 years ago

Calculate the volume of the cylinder: 10 yd 7 yd

Evgesh-ka [11]

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Step-by-step explanation:

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3 years ago

Factor the trinomial. Factor out the GCF first.<br> 5x^2y - 30xy^2 - 35y^3

anzhelika [568]

Answer: $5x^2y - 30xy^2 - 35y^3=5y(x+y)(x-7y)$

Step-by-step explanation:

GCF = Greatest common factor.

For example: 6 is the GCF of 12 and 18.

The given expression: $5x^2y - 30xy^2 - 35y^3$

It can be written as

$5x^2y - (5\times6)x( y\times y) - (5\times7)(y^2\times y)$

Taking out common factor $5y$ , we get

$5y(x^2-6xy-7y^2)\\\\ =5y(x^2+xy-7xy-7y^2)\ \ [\because-6xy=xy-7xy]\\\\=5y(x(x+y)-7y(x+y))\\\\= 5y((x+y)(x-7y))\\\\=5y(x+y)(x-7y)$

Hence, $5x^2y - 30xy^2 - 35y^3=5y(x+y)(x-7y)$

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3 years ago

A rectangular painting is 42 centimeters wide and 51 centimeters long. What is the perimeter of this painting?

Alex

186cm
You add all the sides up, so 42+42+51+51 which equals 186cm

6 0

2 years ago

Is this how you work this out or am I doing it wrong​

Is this how you work this out or am I doing it wrong