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creativ13 [48]
2 years ago
15

Element X is a radioactive isotope such that every 28 years, its mass decreases by

Mathematics
1 answer:
Alex_Xolod [135]2 years ago
5 0

Answer:

21

Step-by-step explanation:

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the nth pyramidal number tells how many cannonballs there are in a square arrangement that is n cannonballs square. a: true b: f
anzhelika [568]
This statement is true.

A pyramidal number tells the number of balls that could be stacked evenly with square bases. If were are looking for the nth pyramidal number, that is a pyramid with a square base that is n by n.
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3 years ago
Alaina’s sugar cookie recipe calls for 21 4 cups of flour per batch. If she wants to make 2 3 a batch of cookies, how much flour
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"Alaina’s sugar cookie recipe calls for 2 1/4

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Answer:

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Step-by-step explanation:

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3 years ago
Can I please get some help with this :D
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