Answer:
9x10^7 is your scienctific notation, which is also 90000000 in expanded form
Answer:
• lateral area: 36√3 square units
• total surface area: (36 +36√3) square units
Step-by-step explanation:
The area of an equilateral triangle of side length s is given by ...
A = (√3)/4·s^2
Your pyramid has four (4) such faces of side length 6 units, so the total (lateral) area of the triangular faces is ...
LA = √3·(6 units)^2 = 36√3 square units
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Of course the area of the square base is simply the square of its edge length, so is ...
A = (6 units)^2 = 36 square units
That means the total surface area, the lateral area plus the base area, is ...
(36 +36√3) square units
Answer:
B
Step-by-step explanation:
Given
2(5x + 8) = 6x + 20 ← distribute parenthesis on left side
10x + 16 = 6x + 20 ( subtract 6x from both sides )
4x + 16 = 20 ( subtract 16 from both sides )
4x = 4 ( divide both sides by 4 )
x = 1 → B
Answer: x= -2
Step-by-step explanation: use pemdas
10x + 8 = 3(x - 2) distribuite parenthesis
10x + 8 = 3x - 6
10x + 8 = 3x - 6 add like terms
7x +8= -6 add like terms
7x= -14 divide to get x alone
x= -2
