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2 years ago

Seven less than a number, divided by five, is -2

Mathematics

2 answers:

Anna35 [415]2 years ago

7 0

X-7/5 = -2
x- 7 = -10
x = -3
The number is -3

nikklg [1K]2 years ago

7 0

Answer:

Step-by-step explanation:

( x - 7 ) ÷ 5 = -2

( <u>-3</u> - 7 ) ÷ 5 = -2

( -10 ) ÷ 5 = -2

-10 ÷ 5 = -2

<h2><em>The answer is -3</em></h2>

<em>The answer is negative 2 because if you minus negative 3 by 7 first, it will give you negative 10. When you divide negative 10 by 5, you get negative 2, which is the answer to the equation.</em>

<em>Hope this helps! <3</em>

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Material for a dress costs £5.50 per metre.<br> find the cost of 10cm and 70cm

Zielflug [23.3K]

Answer:

<em>The cost of 10 cm and 70 cm are £0.55 and £3.85 respectively.</em>

Step-by-step explanation:

Material for a dress costs £5.50 per meter.

We know that, <u>1 meter = 100 cm</u>.

Suppose, the cost of 10 cm material is $x$ and the cost of 70 cm material is $y$

Now, <u>according to the ratio of "cost" to the "length of material"</u> , we will get.......

$\frac{x}{10} =\frac{5.50}{100}\\ \\ 100x=10*5.50=55\\ \\ x=\frac{55}{100}=0.55$

and

$\frac{y}{70} =\frac{5.50}{100}\\ \\ 100y=70*5.50=385\\ \\ x=\frac{385}{100}=3.85$

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Step-by-step explanation:

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