What time is 7 1/2 hours before 2:12 am

Mathematics

1 answer:

Advocard [28]3 years ago

5 0

It's 7:18... Because you have to because 7 subtract 2:12 is 7, and half is 30 min...

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Please help! Use Pythagorean theorem to find perimeter

astraxan [27]

Answer:

18 units.

Step-by-step explanation:

A classic right triangle is the 3, 4, 5 triangle. Essentially, 3^2 + 4^2 = 5^2 . Otherwise known as, 9 +16 = 25. With that said, there are two of those that we can make by drawing horizontal lines along the grid. We also know from counting the two vertical sides are each 4 units. To summarize, two sides are 5 units and two are 4 units. We add them together, 5 + 5 + 4 + 4 = 18

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3 years ago

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larisa86 [58]

Question:- how many 50 cents coins are there in $10.50

Answer:-

Total amount-> $ 10.50

So amount in cents

$ 1 is equal to 100 cents

$10.50 is equal to 1050 cents

According to the question

$Number \: of \: the \: 50 \: cents= \frac{ Total \: cents}{ 50 \: cents } \\$

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3 years ago

Solid A is dilated using a scale factor of 2⁄5, resulting in Solid B. Solid B is also dilated using a scale factor of 2⁄5, resul

Lyrx [107]

Answer:

28.8 and 180

Step-by-step explanation:

you just times B by 2/5 to get C and divide it by 2/5 to get A

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We know the answers make sense because A shrinks to get B and B shrinks to get C, and our answers match that.

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3 years ago

Without measuring, how can you determine whether two sides of a polygon are congruent?

Alinara [238K]

Ow... this geometry is sure hard!!
.
Wait a second. Nope.
.
TWO SIDES!!
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ITT!!
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CONVERSE ITT!!
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Converse Isosceles Triangle Theorem!
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Look at the picture I attached.
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Two angles equal... THE SIDES ADJACENT TO IT EQUAL!!
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PERFECTO!!
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Hope I helped!!

Source: I am learning Honors Geometry, near end of course.