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TEA [102]
3 years ago
5

I will mark brainliest

Mathematics
1 answer:
Lisa [10]3 years ago
6 0

Answer:

21 degrees Fahrenheit

Step-by-step explanation:

I'm smart.

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Find the product and simplify your answer.<br> -3x(6x3 - 5x + 5)
Len [333]

Answer:

Step-by-step explanation:

product: -18x4 + 15x2 - 15x

the simplification just ends up being the original equation.

4 0
3 years ago
Element X is a radioactive isotope such that every 90 years, its mass decreases by half. Given that the initial mass of a sample
steposvetlana [31]

Answer:

approximately 27 grams

Work Shown:

Half life formula

y = A*(0.5)^(x/H)

where,

A = starting amount = 30 grams

H = half life period = 90 years

x = number of years that pass by = 12

y = amount left over after x years

Let's plug the values for x, A and H into the formula to find y

y = A*(0.5)^(x/H)

y = 30*(0.5)^(12/90)

y = 27.3516746567466

y = 27 .... rounding to the nearest whole number

4 0
3 years ago
Mario needs 1024 MB to make a backup of his computer files, for this he has 3 USB memories with a capacity of 256 MB. How many U
Brut [27]
256 x 3 is uhh 768 so it would be 2 of the 128 sticks
6 0
2 years ago
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The ratio of the number of left handers to the number of right handers in a middle school is 6:15. If there are 120 left handers
omeli [17]

Answer:

300 right handers

Step-by-step explanation:

5 0
3 years ago
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What does (-5) + (-4) =?
Stolb23 [73]

Answer:

-9

Step-by-step explanation:

3 0
3 years ago
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