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zvonat [6]
3 years ago
13

Write the estimated weight of each dinosaur in scientific notation.

Mathematics
2 answers:
Lubov Fominskaja [6]3 years ago
6 0
Argentinosaurus- 2.2x10^5

Brachiosaurus- 1.0x10^5

Apatosaurus- 6.6x10^4

Diplodocus- 5.0x10^4

Camarasourus- 4.0x10^4

Cetioauriscus- 1.985X10^4

I hope this helps :3
Levart [38]3 years ago
6 0
<span>Argentinosaurus 220,000
</span><span>Apatosaurus 66,000
</span><span>Brachiosaurus 100,000
 </span><span>Cetioauriscus 19,850 
</span> <span>Camarasourus 40,000
 </span><span>Diplodocus 50,000</span> 
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1. First, let us find the probability that the first card is a diamond.

Now, since we are given that there are four suits and there are, assumably, an equal number of cards in each suit, we can say that the probability of choosing a diamond card is 1/4. We can also write this out as such, where D = Diamond:

Pr(D) = no. of diamond cards / total number of cards

There are 52 cards in a deck, and 13 cards of each suit, thus:

Pr(D) = 13/52 = 1/4

2. Now we need to calculate the probability of not choosing a diamond as the second card.

In many cases, when given a problem that requires you to find the probability of something not happening, it may be easier to set it out as such:

Pr(A') = 1 - Pr(A)

ie. Pr(A not happening, or not A) = 1 - Pr(A happening, or A)

This works because the total probability is always 1 (100%), and it makes sense that to find the probability of A not happening, we take the total probability and subtract the probability of A actually happening.

Thus, given that we have already calculated that the probability of choosing a Diamond is 1/4, we can now set this out as such:

Pr(D') = 1 - Pr(D)

Pr(D') = 1 - 1/4

Pr(D') = 3/4

3. Now we come to the final step. To find the probability of something and then something else happening, we must multiply the two probabilities together. Thus, given that Pr(D) = 1/4 and Pr(D') = 3/4, we get:

Pr(D)*Pr(D') = (1/4)*(3/4)

= 3/16

Thus, the probability of choosing a diamond as the first card and then not choosing a diamond as the second card is 3/16.

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