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Alinara [238K]
3 years ago
5

A bracelet was marked up $50 from cost, which amounts to a 20% increase. Find the original cost of the bracelet.

Mathematics
2 answers:
diamong [38]3 years ago
7 0
260 is the original cost of the bracelet
Damm [24]3 years ago
6 0

Answer:

The original cost of the bracelet was $250.

Step-by-step explanation:

A bracelet was marked up $50 from cost, which amounts to a 20% increase.

Let the original cost be x.

We can understand in simpler terms that 20% of x is $50.

So, we can find x.

0.20\times x=50

x=\frac{50}{0.20}

x = 250

Hence, the original cost of the bracelet was $250.

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Log explanation below; answer is at bottom.

If the length, l, is 12 units longer than the width, w, then w = l - 12. If the perimeter, p,

p = 2l +2w,

is 7 x w, then

w = p/7

When two things are set equal to the same variable, they are equal to each other, so,

l - 12 = p/7

Now you need to get rid of the p so you are only working with one variable. To do this you plug in whatever p is equal to for p, so,

l - 12 = (2l + 2w)/7 now to get rid of the w do the same thing we did with p just for w. So,

l - 12 = (2l + 2(l - 12))/7

To solve this you want to multiply both sides by 7 first to get rid of the fraction.

7l - 84 = 2l + 2(l - 12)

Next you want to distribute the 2 over the l and the 12.

7l - 84 = 2l + 2l - 24

Next you want to combine like terms on each side.

7l - 84 = 4l - 24

Next add 84 and subtract 4l from sides to isolate the variable.

3l = 60

Now divide each side by 11 to get your answer.

l = 20.

To find the width,

w = l - 12  

Just plug in and solve.

w = 20 - 12

w = 8

So your length and width are 20 and 8.

l = 20

w = 8

7 0
3 years ago
Use the GCF to factor this expression: 90x + 4
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Write the equation of a line in slope intercept form that is parallel to the line y= 1/3x + 5 and passes through (-9, 5)
vladimir2022 [97]
Find the slope of line 1
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Find the slope-intercept form of equation, with m = 1/3 and (-9,5)
General formula
y - y₁ = m(x - x₁)

Input the number to the formula
y - y₁ = m(x - x₁)
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7 0
3 years ago
Rick and lulu each went on a family vacataion.Rick drove 375 miles in 5 hours; Lulu drove for 6 hours and 30 minutes.If they tra
sveticcg [70]

Answer:

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Answer:

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