Answer:
Step-by-step explanation:
we subtract to find how much they saved, 40-24=16
now we divide 16 by 40 to get the percent 16/40 = 0.4
40%
Answer:
zero
Step-by-step explanation:
The answer to that question is best found by looking at the value of the <em>discriminant</em>.
For quadratic ax^2 +bx +c = 0, the value of the discriminant is ...
d = b^2 -4ac
Here, you have a=3, b=8, c=7, so the discriminant is ...
d = 8^2 -4(3)(7) = 64 -84 = -20
When the discriminant is negative, both solutions are complex (not real).
There are zero real solutions to this equation.
Answer:
It'll take a bucket loads of 
to empty world's ocean
Step-by-step explanation:
Given
To get the number of bucket loads, we simply divide the size of the ocean by the size of the bucket;
Expand the numerator
Recall that
So, the expression becomes
Simplify the numerator using laws of indices
Expand the denominator
Split fraction
Simplify fraction using laws of indices
Hence, it'll take a bucket loads of to empty world's ocean
(3,750 people
60%=did shop
40%=did not shop =2,500
2,500/40 = x/100
40x = 2,500x100
40x=250,000
x = 250,000/40
x=6,250
6,250 =all people at the mall
6,250 - 2,500 =3,750 (60%)
OR
(2,500 x60)/40 = 3,750
Let 
be the number of minutes.
The first tank starts with 1500 liters, and loses 4 liters per minute, so after minutes there will be
liters of water.
The second tank is filled at 6 liters per second, i.e.
liters per minute.
So, there will be
liters of water in the second tank after minutes.
The two quantities will be equal when
so, approximately, after 3.3 minutes.
