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kykrilka [37]
4 years ago
13

Catherine studied 1.25 hours for her science test. This was 0.5 hours less than she studied for her algebra test. Write and solv

e a subtraction equation to find how long she studied for her algebra test.
Mathematics
1 answer:
tia_tia [17]4 years ago
7 0
1.25 - 0.5 = 0.75


1.25 hours = 1 hour 15 minutes
0.5 hours = 30 minutes

1 hour 15 minutes - 30 minutes = 45 minutes
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Triangle ABC is formed by two parallel lines and two other intersecting lines. Find the measure of each angle A, B, and of the t
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Answer:

<u>A = 61°</u>

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Step-by-step explanation:

Well, first of all, we can see that:

61^{\circ}+47^{\circ}+B^{\circ}=180^{\circ}

So, we can find angle B.

B=180^{\circ}-47^{\circ}-61^{\circ}

B=72^{\circ}

Now, we can see to that angle C is just 47°

Finally, we know that the sum of all angles in a triangle is 180°, so we have:

B+A+C=180^{\circ}

A=180^{\circ}-47^{\circ}-72^{\circ}

A=61^{\circ}

I hope it helps you!

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