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3 years ago

I don't know what this equals??

Mathematics

1 answer:

iren [92.7K]3 years ago

5 0

Answer:

A decagon has 10 sides so its interior angles add up to 180(10) - 360 = 1440 degrees. Therefore, on average, each interior angle is 144 degrees and each exterior angle is 36 degrees. The sum of the exterior angles is 10 x 36 = 360 degrees.

Step-by-step explanation:

The total sum of the interior angles of a simple decagon is 1440°

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Roman55 [17]

Answer:

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Step-by-step explanation:

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3 years ago

What theorem or postulate proves the two triangles congruent?

Sav [38]

the theorem is SAS that proves the two triangles are congruent

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3 years ago

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A shop sells a party hat at x dollars and a mask at y dollars. On a particular morning, 3 hats and 4 masks were sold for $27. In

Aleks [24]

Answer:

Cost of each hat: $5

Cost of each mask: $3

Step-by-step explanation:

Let be "x" the cost in dollars of a party hat and "y" the cost in dollars of a mask.

Set up a System of equations using the information given in the exercise:

$\left \{ {{3x+4y=27} \atop {3x+6y=33}} \right.$

You can use the Elimination Method to solve this System of equations:

1. You can multiply the first equation by -1.

2. Then you must add the equations.

3. Solve for "y".

Then:

$\left \{ {{-3x-4y=-27} \atop {3x+6y=33}} \right.\\.....................\\2y=6\\\\y=\frac{6}{2}\\\\y=3$

4. Now you can substitute the value of "y" into any original equation.

5. Finally, solve for "x" in order to find its value.

Then:

$3x+4(3)=27\\\\3x=27-12\\\\x=\frac{15}{3}\\\\x=5$

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4 years ago

15 times what equals 45

Olenka [21]

15 times 3 is 45. 15+15+15=45 and since that's 3 15's, 15 times 3=45

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3 years ago

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Another unit used to measure computer memory is a bit. There are 8 bits in a byte. Explain how you can convert the number of byt

soldier1979 [14.2K]

Answer:

By multiplying the number of bytes times 8

Step-by-step explanation:

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4 years ago

I don't know what this equals??​

I don't know what this equals??