Ask question

Ask question

All categories

Artyom0805 [142]

3 years ago

6

jane paid $40 for an item after she received a 20% discount. janes friend says this means that the original price of the item is

$48 IS janes friend correct why or why not

1 answer:

Semenov [28]3 years ago

8 0

48x0.2= $9.6
$48-9.6=$38.40 Her friend is incorrect.
40/48 =0.83 or about 83% So, in this case she only got 17% off. :)
Hope I helped

You might be interested in

Find the minimum of the data set.

Natalija [7]

Answer:

23,600.

Step-by-step explanation:

23|6

7 0

3 years ago

Common factors of 20w and 40wz

Alla [95]

I hope this helps you

6 0

3 years ago

What number does y stand for in this equation?<br> 2y - 7 = 35

timama [110]

Answer:

y stands for 21 in this equation.

Step-by-step explanation:

2y - 7 = 35

2y = 42

y = 21

3 0

3 years ago

Read 2 more answers

One of the main contaminants of a nuclear accident, such as that at Chernobyl, is strontium-90, which decays exponentially at a

igor_vitrenko [27]

Answer: $P=0.975^t$

Step-by-step explanation:

We know that the general form of the exponential decay formula is

$y=A(1-r)^t$ , where y is final amount remaining after t time, A is the original amount and r is the rate of decay

Now, the ratio of strontium-90 remaining, p , as a function of years, t , since the nuclear accident. $P=\frac{A(1-0.02)^t}{A}=\frac{(0.975)^t}{1}$

Hence, the ratio of remaining since the nuclear accident is $P=0.975^t$

3 0

3 years ago

Read 2 more answers

Which expressions are equivalent to z + (z + 6)?

katrin2010 [14]

Answer:

z=3 because in the 2(z+3) is like (z+2)+(z+6)

3 0

3 years ago