3 years ago

Share £120 in the ratio 5:2:1

Mathematics

1 answer:

4vir4ik [10]3 years ago

7 0

Answer: 75:30:15 in the same order

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3 years ago

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What is the equation of a line passing through the point (4,-1) and parallel to the line whose equation is 2y-x=8

Ksivusya [100]

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Answer:

2y -x = -6

Step-by-step explanation:

You can use the same x- and y-coefficients. You just have to change the constant on the right. Put the point values into the left expression to see the new constant.

2y -x = 2(-1)-(4) = -6

The parallel line is ...

2y -x = -6

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4 years ago

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3 years ago

What is the simplified form of the rational expression below 6x^2-54 / 5x^2+15x

Vladimir [108]

Answer:

$\large\boxed{\dfrac{6x^2-54}{5x^2+15x}=\dfrac{6(x-3)}{5x}=\dfrac{6x-18}{5x}}$

Step-by-step explanation:

$6x^2-54\qquad\text{distributive}\\\\=6(x^2-9)=6(x^2-3^2)\qquad\text{use}\ a^2-b^2=(a-b)(a+b)\\\\=6(x-3)(x+3)\\\\5x^2+15x\qquad\text{distributive}\\\\=5x(x+3)\\-----------------\\\\\dfrac{6x^2-54}{5x^2+15x}=\dfrac{6(x-3)(x+3)}{5x(x+3)}\qquad\text{cancel}\ (x+3)\\\\=\dfrac{6(x-3)}{5x}=\dfrac{6x-18}{5x}$

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3 years ago

What is the discount and sale price of a $300 item that has been discounted 10%?

Ede4ka [16]

10% = 0.10

300 x 0.10 = 30
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4 years ago

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Share £120 in the ratio 5:2:1​

Share £120 in the ratio 5:2:1