2 years ago

To convert a fraction to a decimal, you have to divide by the _?

2 answers:

6 0

To convert a fraction to a decimal, you have to divide the denominator by the numerator.

<em>HOPE THIS HELPS! HAVE A GREAT DAY!!!</em>

sesenic [268]2 years ago

4 0

the top number of a fraction is the numerator, the bottom number is the denominator

to turn a fraction into a decimal divide the numerator by the denominator (Top number by the bottom number)

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A jewellery shop sells 240 necklaces in a month 180 of the necklaces were sold via the shop website work out the simplest form

Dovator [93]

Answer:

3 : 1

Step-by-step explanation:

A jewellery shop sells 240 necklaces in a month 180 of the necklaces were sold via the shop website work out the simplest form. The rest were sold in a High Street shop.

Work out the ratio of online sales to shop sales.

Give your answer in its simplest form.

Necklace sold in the shop = 240 - 180 = 60

180 : 60

to convert to simplest form, divide both numbers by 60

3 : 1

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2 years ago

If (a+b)^2=54, and (a-b)^=46, then a^2+b^2=?

erastovalidia [21]

$(a+b)^2 =a^2 +b^2 + 2ab = 54~~~.....(i)\\\\(a-b)^2 = a^2 +b^2 -2ab = 46~~~.....(i)\\\\\\(i)+(ii):\\\\(a+b)^2 +(a-b)^2 = 54+46\\\\\implies a^2 +b^2 + 2ab + a^2 +b^2 - 2ab =100\\\\\implies 2a^2 +2b^2 =100\\\\ \\\implies 2(a^2 +b^2) =100\\\\\implies a^2 +b^2 = \dfrac{100}2 = 50$

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2 years ago

What are the coordinates of the vertex for f(x) = 2x2 + 4x + 9?

Vlada [557]

Your equation $f(x)=2x^2+4x+9$ is in the form $y=ax^2+bx+c$
The vertex only relies on "a" and "b" though, so that +9 doesn't really matter in this case. The vertex of a parabola is located where
$x=\frac{-b}{2a}=\frac{-4}{2(2)}=-1$
So your x-coordinate is -1. You need to find f(-1) to find your y-coordinate, and then you list it in the form (-1, y).

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3 years ago

To convert a fraction to a decimal, you have to divide ________ by the _________?

To convert a fraction to a decimal, you have to divide by the _?