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Taya2010 [7]
3 years ago
15

Surface area is the sum of the areas of all the surfaces of a three-dimensional object.

Mathematics
1 answer:
Dmitry [639]3 years ago
3 0

Answer: True

Think of a 3D box. It has 6 faces and the surface area is the total of all six individual rectangular faces. This idea applies to any polyhedron.

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if angle A and angle B are supplementary, and angle A and angle C are supplementary. What conclusion is valid
Fantom [35]

Answer:

no angle c is not supplementary

Step-by-step explanation:

 

Angle A and angle B are supplementary

 

A+B=180°   Equation 1

 

The measure of angle B is equal to four times the complement of angle A

 

The complement of angle A=90°-A

 

B=4(90°-A)  

 

B=360°-4A

 

Substitute the value of B in equation 1

 

A+360°-4A=180°

 

-3A=-180°

 

A=60°

 

The measure of angle A=60°

 

B=360°-4A=360°-4(60°)=120°

 

The measure of angle B=120°

6 0
3 years ago
Read 2 more answers
Joseph is making kebabs. He wants each kebab to have 333 pieces of meat and 444 pieces of vegetables.
Paul [167]

Answer:

3 pieces of meat and 4 pieces of vegetables

Step-by-step explanation:

its basicly a ratio the meat is 1 lower than the vegetables.

4 0
3 years ago
A rectangle with a perimeter of 113 units is dilated by a scale factor of 3. Find the
Daniel [21]

Answer:

339 units

Step-by-step explanation:

You simply multiply the perimeter of the original rectangle by three to get the perimeter of the new rectangle.

3 0
3 years ago
23 20' 48" is the same as _____. <br><br> Round to the nearest hundredth of a degree.
pentagon [3]
23° 20' 48" in degrees

Minutes are 1/60 of a degree and seconds 1/60 of a minute.

Let's convert the 48" to minutes.
48/60 = 0.8

23° 20' 48" ⇒ 23° 20.8'

Let's convert the 20.8' to degrees.
20.8/60 ≈ 0.3466667

23° 20.8' ⇒ 23.35°
3 0
3 years ago
Read 2 more answers
HELP ASAP !! easy question and i’ll give brainliest
tia_tia [17]

Answer:

x=38.5

Step-by-step explanation:

\sqrt{23^{2}- 18^{2}}   =\sqrt{205}

cos(x)=\frac{18^{2} +23^{2} -205}{2(18)(23)}

x=38.5(correct to the nearest tenth)

4 0
3 years ago
Read 2 more answers
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