MZLON is a straight angle. a mZLOM = 4x + 30° mZMON = 8x + 90° Find mZMON:
2 answers:
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Given:
Total number of coins (Quarters and dimes) = 60
Total amount = $12.45
To find:
The number of quarters and dimes.
Solution:
Let x be the number of quarters and y be the number of dimes.
We know that,
1 quarter = 0.25 dollar
1 dime = 0.10 dollar
Total coins: ...(i)
Total amount: ...(ii)
From (i), we get
...(iii)
Putting this value in (ii), we get
Divide both sides by 0.15.
Putting x=43 in (iii), we get
So, the number of quarters is 43 and the number of dimes is 17.
Therefore, the correct option is b.
<em> The radius of a circle is 10 m. Find its area to the nearest whole number.</em>
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We're asked to find the area of the circle, which we can find using the following formula:-
Where:-
- π = pi [3.14...]
- r=radius (10 m)
Substitute 10 for r and 3.14 for π:-
On simplification,
On further simplification,
The Area is:-
Note:- Area is always measured in units² (units squared)