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xz_007 [3.2K]
3 years ago
7

Use a common denominator to determine whether the ratios form a proportion.

Mathematics
1 answer:
Marysya12 [62]3 years ago
6 0
Well, the common denominator of6 and 15 would be three so you would get 2 and 3

the common denominator of 30 and 80 would be 10 and it would equal 3 and 8
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Can you simplify -3(x+7)
egoroff_w [7]

Answer:-3x-21

Step-by-step explanation: use the distributive property

6 0
3 years ago
Read 2 more answers
Time 6:20 +35 mins time =
IRISSAK [1]
20 mins + 35 mins = 55 mins
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6 0
3 years ago
Convert to the given unit.<br> 3 T=___lb
damaskus [11]

Answer:

1 ton is equal to 2000 lbs

To find how many lbs is 3 tons, multiply 2000 by 3

2000 times 3 is 6000

So, 3 T = 6000 lbs

Hope I helped!

3 0
3 years ago
Dude this should be so easy but this is going in one ear and out the other how do I do this send help ​
kipiarov [429]

Answer:

0.5 hours

Explanation:

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Formula:

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6 0
2 years ago
Find sin(u/2) if tan(u)=-7.721 and u is in quadrant 4
morpeh [17]

Answer:

.6601

Step-by-step explanation:

to find u, which we assume is an angle of course, we can take arctan of both sides.  so arctan(-7.721) = -1.4420.  this angle is in quadrant 4, but it is not in the range.  In this instance you just go around the circle again, or add 2pi, which gets us 4.8412.  You can check and you get the same answer if you take the tangent of either.

So now we have a number in the appropriate range  in the appropriate quadrant.  That means we have the correct angle.  The question asks what is sine of that angle cut in half.  so sin(4.8412/2), which gets you your answer.  let em know if something didn't make sense.  

7 0
3 years ago
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