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hram777 [196]
3 years ago
12

The price of a watch was increased by 20% to £144. What was the price before the increase?

Mathematics
1 answer:
Zinaida [17]3 years ago
6 0

Answer:

120 pounds

Step-by-step explanation:

Since the new cost is 144 pounds and this is 20% more,  this is 120% of the original price. Remember 100+20 = 120. To find the original price set up a proportion with these values:

\frac{144}{x}=\frac{120}{100}

Solve for the original price by cross multiplying numerator with denominator.

x(120) = 144(100)

120x = 14400

x= 120 pounds



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sukhopar [10]

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y -x = 8

$12y - $6x = $236

<h3>Defining the variables </h3>

Let:

x = number of large tables the designer can make.

x = number of small tables the designer can make.

<h3>Simultaneous equations</h3>

Simultaneous equations are sets of equations that must be solved together in order to determine the required variables. Methods of solving simultaneous equations include:

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5 0
2 years ago
Write a rule for the nth term of the geometric sequence for which a1=−6 and a5=−486
patriot [66]

The geometric rule for the nth term of the geometric sequence for which a1 =−6 and a5=−486 is -6 × 3^(n - 1)

<h3>The nth term of a geometric sequence</h3>

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a5 = ar^(n - 1)

-486 = -6 × r^(5-1)

-486 = -6r⁴

r⁴ = -486 / 6

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r = 4√81

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Learn more about geometric sequence:

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7 0
2 years ago
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3 0
4 years ago
Y=300-5x in standard form
Akimi4 [234]
<span>y = 300 - 5x

Standard form:
ax + by = c

</span>y = 300 - 5x
<span>5x + y = 300

Then to find the y-intercept, insert a 0 into the 'x'.
5(0) + y = 300
y = 300
The y-intercept is 300.

To find the x-intercept, insert a 0 into the 'y'.
5x + (0) = 300
5x = 300
x = 60

The x-intercept is 60.</span>
8 0
3 years ago
Read 2 more answers
I need help within the next 15 mins
abruzzese [7]

Answer:30

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3 0
3 years ago
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