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Zinaida [17]
3 years ago
7

Which set of angles will be complimentary

Mathematics
1 answer:
White raven [17]3 years ago
3 0

∠1 + ∠3 + 90° = 180°

∠1 + ∠3 = 90°

∠3 = ∠4 (vertically opposite angles)

∠1 + ∠4 = 90°

Therefore, the answer is ∠1 + ∠4

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Please help!! I'm super confused :(
Kobotan [32]

Answer:

90 lb/1 x 0.45 = 40.5

Step-by-step explanation:

To convert pounds to kilograms you would have to multiply the pounds by 0.45. So you have to multiply 90 by 0.45.

5 0
3 years ago
Explain how using basic facts can help you find 10×20×30×40 mentally?
Katena32 [7]
So all you have to do is take the first numbers of each multiple and multiply them. 
1 x 2 x 3 x 4 = 24 
Now you just add the 4 zeros to your answer. 
240,000 

Our answer even checks! 
10 x 20 x 30 x 40 = 240,000 

Good Luck! :)
3 0
4 years ago
How do I find the measure of these two supplementary angles using algebra?
nikdorinn [45]

Answer:

70 and 110

Step-by-step explanation:

The two angles add to 180 degrees since they form a straight line

2x+10 +3x+20 =180

5x+30 = 180

Subtract 30 from each side

5x+30-30 =180-30

5x = 150

Divide by 5

5x/5 =180/5

x = 30

The left angle is 2x+10 = 2*30+10 = 60+10 =70

The right angle is 3x+20 = 3*30 +20 = 90+20 = 110

7 0
3 years ago
Senpai help me what is 657×678​
labwork [276]

Answer:

The answer is 445,446

Step-by-step explanation:

have a great day everyone :)

8 0
3 years ago
Read 2 more answers
You have a 1.5 litre bottle of water and drink 295 millilitres. Your friend drinks 135 millilitres. How much is left?
inna [77]
Convert liters to milliliters so that you have one unit for all of the amounts in the question.

1 liter is equal to 1000 milliliters, so multiply the 1.5 liters you have by 1000:

1.5 * 1000 = 1500

Since you drank 295 milliliters, and your friend drank 135 milliliters, you will subtract those values from the amount in the bottle:

1500 - 295 - 135 = 1500 - 430 = 1070

There is 1070 milliliters of water left in the bottle. 

If you want to find the amount remaining in the bottle in liters, divide the amount remaining by 1000 to convert milliliters to liters:

1070 / 1000 = 1.07

Converted back into liters, there is 1.07 liters of water left in the bottle.
6 0
3 years ago
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