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Eva8 [605]
3 years ago
7

What do you divide -81 to get +81?

Mathematics
1 answer:
Sliva [168]3 years ago
6 0
Divide it by -1 to get positive 81
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The square of Mark's age 3 years ago is 6 times the age he will be in 9 years. What is his age now?
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Answer:

Age= 15

Step-by-step explanation:

Let a be for age at the moment

(a-3)^2 =6(a+9)

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3 years ago
The circumference of a circle is 47.1 feet. What is the diameter of the circle? 7.5 ft 15 ft 147.9 ft 30 ft
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Hi Zack! Thanks for asking a question here on Brainly.

█ Explanation <span>█
</span>
<span>✦ We are looking to find the diameter of the circle.
</span>✦ Do the following formula to find the diameter.
✦ 47,1/ \pi =47.1/3.14
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<span>Hope that helps! ★ <span>If you have further questions about this question or need more help, feel free to comment below or leave me a PM. -UnicornFudge aka Nadia </span></span>
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