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Elina [12.6K]
3 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.
Mathematics
1 answer:
rjkz [21]3 years ago
8 0

Answer:

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

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Select the correct answer. Two exterior angles of a triangle measure 135° and 100°. What are the measures of the interior angles
ozzi

Answer:

C

Step-by-step explanation:

interior angle + exterior angle are supplementary

interior angle = 180° - exterior angle

⇒ interior angle = 180° - 135° = 45°

and interior angle = 180° - 100° = 80°

The sum of the 3 angles in a triangle = 180°

To find the third interior angle, subtract the sum of the 2 interior angles from 180

third interior angle = 180° - (45 + 80 )° = 180° - 125° = 55°

interior angles are 45°, 55° and 80°


4 0
3 years ago
Thank you for your help
olya-2409 [2.1K]

Answer:

I'm not completely sure but if they want exponents for 6 * 6 * 6 then it should be 6^{3}

Step-by-step explanation:

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2 years ago
7 watermelons cost $8.96.Which equation would help determine the cost of the 5 watermelons?
postnew [5]

Answer: ($8.96 / 7) * 5                        or $6.40

Step-by-step explanation: You need to find the price for one watermelon then multiply it by 5 to find the price of 5.

4 0
3 years ago
Read 2 more answers
What are the steps to find (2+2i)(5+3i)?
WITCHER [35]

(2+2i)(5+3i)
10+6i+10i+6i^2
10+16i+6(-1)
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When you have an “i^2”, you also have a negative one. The simplified answer is 4+16i
6 0
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Read 2 more answers
2 ways to write y divided by three in algebra expression
JulijaS [17]

Answer:

y/3. 1/3y

Step-by-step explanation:

1/3y is y/3 because 1*y=y

7 0
3 years ago
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