Which angles are obtuse?
2 answers:
Answer:
B. ∠DBC
Step-by-step explanation:
Obtuse angles are angles larger than 90 degrees.
We can easily tell that ∠GFC and ∠MLK aren't obtuse, since ∠GFC is acute and ∠MLK is a right angle. <u><em>Right angles and acute angles are always less than obtuse.</em></u>
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Now, for a trickier one. Let's look at ∠DBA and ∠DBC
It's easer to find out what type of angles they are by separating them. (look at image)
See? ∠DBA is acute. And we can easily tell that ∠DBC is an obtuse angle.
<h3><em><u></u></em></h3><h3><em><u>Hence, ∠DBC is the correct answer</u></em></h3><h3><em><u></u></em></h3><h2>Hope this helps! (Brainliest?)</h2>
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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.