Contestants in a dance a-thon rest for the same amount of time every hour. A couple rests for 21 minutes

Mathematics

1 answer:

Ksju [112]3 years ago

4 0

Set 21 minutes over 3 hours to equal to x over 8 hours

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Is this number written in scientific notation 4.8•100^7

Ne4ueva [31]

No this number is not written in scientific notation
In scientific notation, it'll look like
4.8 * 10 ^14

In scientific notation it's 10 ^ n
NOT 100^n

Hope this helps

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How do I solve this properly?

o-na [289]

Answer:

x $\geq$ 4

Step-by-step explanation:

4x^2 - 64 $\geq$ 0 ; move 64 over

4x^2 $\geq$ 64 ; divide by 4

x^2 $\geq$ 16 ; take square root of both sides

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