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2 years ago

A sporting goods store displays the following sale sign. What percent off is the sale

Mathematics

1 answer:

victus00 [196]2 years ago

8 0

Answer:

The sale is 5% off.

Step-by-step explanation:

$25 regular price.
$18.75 sale price.

You need to find the percentage that deducts $1.25 from the regular price. I start with 5% and work my way up from there until I find the answer.

So, 5% of 25 = ?

5% * 25 = 1.25

You needed $1.25, 5% gives you that.

Therefore, the answer is 5%.

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Answer:

A true

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3 years ago

A scientist has 100 milligrams of a radioactive element. The amount of radioactive element remaining after t days can be determi

grandymaker [24]

The mass of the first shipment at time t is
$m_{1}=100( \frac{1}{2} )^{ \frac{t}{10}}$

The mass of the second shipment at time t is
$m_{2}=100( \frac{1}{2} )^{ \frac{t-3}{10} }$

At time t, the ratio of m₁ to m₂ is
$\frac{m_{1}}{m_{2}} = \frac{100}{100}. \frac{(1/2)^{t/10}}{(1/2)^{(t-3)/10}} \\ = \frac{(1/2)^{t/10}}{(1/2)^{t/10}}. \frac{1}{(1/2)^{-3/10}} \\ = (1/2)^{3/10} \\ = 0.8123$

Therefore as a percentage,
$\frac{m_{1}}{m_{2}} =100*0.8123 = 81.23 \%$

Answer: B. 81.2%

4 0

3 years ago

Tatiana [17]

Multiply original price by 90%

8 0

2 years ago

Read 2 more answers

Find 2/5 of 128. I need help

hammer [34]

So you would multiply if it has the word of in the problem right?

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3 years ago

Find x and y and i just need the answer, no need to show work.

vichka [17]

Answer:

x= 20

y = 60

Step-by-step explanation:

y = 3x

6(3x) = 360

3x = 360/6

3x = 60

x = 20

y = 3*20

y = 60

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1 year ago