<span> 20% of 40 is 8. so 40</span>
Answer:
4 dimes and 8 quarters
Step-by-step explanation:
Let d = number of dimes.
Let q = number of quarters.
d + q = 12
10d + 25q = 240
-10d - 10q = -120
(+) 10d + 25q = 240
---------------------------------
15q = 120
q = 120/15
q = 8
d + q = 12
d + 8 = 12
d = 4
Answer: 4 dimes and 8 quarters
Answer:
56 days
Explanation:
where A is final amount, Ao is initial amount, t is time taken, h is half life
Here given:
initial amount: 400 millicuries
final amount: 3.125 millicuries
half life: 8 days
time taken: ?
Hence solve for time taken:
<u>insert values given</u>
<u>divide both sides by 400</u>
<u>apply exponent rule</u>
<u />
<u>simplify</u>
<u>multiply both sides by 8</u>
What is the domain and range for {(0,-5),(1,3),(2,2),(0,4)(-5,6),(3,4)}
Inga [223]
The domain are the x values and the range are the y values.
Domain {0, 1, 2, -5, 3}
Range {-5, 3, 2, 4, 6}
Note: you do not repeat a number if it is already in the domain or range.
Answer:
$1.99 is more expensive.
Step-by-step explanation:
Given:
One type of lace edging cost $0.80 per foot
Another type of lace edging cost $1`.99 per foot.
We need to find which is more expensive.
In $0.88 where one's place is 0.
In $1.99 where one's place is 1.
By comparing the one's place obviously $1.99 more expensive.
Hope you will understand the concept.
Thank you.
