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4 years ago

14

A boy is building a pyramid out of building blocks. He puts 20 blocks in the first row, then he puts 19 blocks in the row above,

and so on. Find the total number of blocks he needs.

1 answer:

rjkz [21]4 years ago

8 0

Answer:

<h3>The answer is 206 I believe</h3>

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3(4x + 2)<br> Pleaseee helppppp meeeeeee

zlopas [31]

Answer:

12x + 6

Step-by-step explanation:

3(4x + 2)

you distribute the 3 to 4x and 2

12x + 6

hope this helps

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3 years ago

What number is 80% of 660?

ddd [48]

Answer:

528

Step-by-step explanation:

(80:100)*660 =

(80*660):100 =

52800:100 = 528

Now we have: 80 percent of 660 = 528

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3 years ago

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3 years ago

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vova2212 [387]

Answer:

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Step-by-step explanation:

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3 years ago

X is at most 30 represent as an algebraic inequality

masya89 [10]

Answer:

x ≤ 30

Step-by-step explanation:

'at most' means the same as 'less than or equal to'.

The sign 'for less than or equal' to is ≤.

So it's simply x ≤ 30.

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3 years ago