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3 years ago

Add or subtract. Simplify, show your work for each problem.

Mathematics

1 answer:

Shtirlitz [24]3 years ago

4 0

Answer:

184

Step-by-step explanation:

Parentheses first, then powers, then then multiplication and division, then adding and subtraction. 6^2=36, then add the other numbers in the parentheses.(4)(36+3+7)=(4)(46) and 4 times 46 equals 184.

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Answer:

Step-by-step explanation:

KL = 12 because the triangle is isosceles ( base angles are congruent)

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the perimeter is

P = 9 + 12 + 12 +12 = 9 +36 = 45

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3 years ago

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3 years ago

Total surface area of a cube is 1014cm^2. It's volume will be :

Karolina [17]

Answer:

Option A (2197 cm³)

Step-by-step explanation:

For a cube with length of each side "a" , it's

Total Surface Area = 6a²
Volume = a³

_____________________________________________

According to the question ,

Total Surface Area = 1014 cm²

Let the length of each side of cube be 'a'.

Using the formula ,

$6a^{2} =1014$

$=> a^{2} =\frac{1014}{6} = 169$

$=> a = \sqrt{169} = +13 \: or -13$

But length can't be negative . So , length of each side = 13 cm

∴ Volume of cube = 13³ = 2197 cm³

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3 years ago