The answer is the first one in the options
If the area of one is 20, that the area of 30 is 20*30=600 square inches.
Answer:
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Step-by-step explanation:
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The answer would be 36.
Following PEMDAS, you'd solve what's in the parenthesis first. 2^2 = 4 and 3^2 = 9. This leaves you with 10 + (4 + 9) x 2. Add 9 and 4 to get 13, and then the parenthesis are done.
Next, you'd multiple 13 and 2 (since it's the next step in PEMDAS) to get 26.
Finally, you add together 10 and 26 to get the answer, which is 36.
I hope this helps!
27y^3 -343 starts out with 27y^3, and 343 is the cube of 7. Thus, we know immediately that 27y3 -343 is the diffeence of two squares.
The appropriate rule is a^3 - b^3 = (a - b)(a^2 + ab + b^2).
Here, we have 27y3 -343 = (3y - 7)(9y^2 + 12y + 49)
