3 years ago

Which of the following are in scientific notation?

Mathematics

2 answers:

horsena [70]3 years ago

8 0

Hi and it’s the 3rd one

ella [17]3 years ago

6 0

Answer:

5.23x10^-2, 8.7x10^-2

Step-by-step explanation:

Scientific notation is basically any number(eg121) thats divided by the lowest power of 10 before it turns into 0.something(in this case, 1.21), times the power of 10 u need to dived, in this case 10^2.

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castortr0y [4]

Answer: 72 cars.

Step-by-step explanation:

Let be "x" the number of toys that Moby had to start with.

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$\frac{1}{2}x$

Then he bought 12 more cars, giving a total amount of 48 toy cars.

Therefore, the equation that represents this situation is the equation shown below:

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Now you must solve for "x" in order to find its value.

You get that this is:

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