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Deffense [45]
3 years ago
6

The correct answer is A bit can you please explain how that is the answer!

Mathematics
1 answer:
kolbaska11 [484]3 years ago
7 0

Answer:

7(x+5)-(2xy^2)

Step-by-step explanation:

"The product of 7" means multiplied by 7

"The sum of x and 5" implies addition

"minus the product of 2, x, and the square of y" means 2, x, and the square of y are all multiplied together subtracted from 7(x+5)

Hope this helps.

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2 years ago
The radioactive isotope radium has a half-life of 1,600 years. The mass of a 100-gram sample of radium will be______ grams after
Olenka [21]
To solve this we are going to use the half life equation N(t)=N_{0} e^{( \frac{-0.693t}{t _{1/2} }) }
Where:
N_{0} is the initial sample
t is the time in years
t_{1/2} is the half life of the substance
N(t) is the remainder quantity after t years 

From the problem we know that:
N_{0} =100
t=200
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N(200) =100e^{( \frac{(-0.693)(200)}{1600}) }
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N(200)=100e^{-0.086625}
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We can conclude that after 1600 years of radioactive decay, the mass of the 100-gram sample will be 91.7 grams.

8 0
2 years ago
(4x2 + 7x - 4) + (x2 - 7x + 14)
fomenos

Answer:

4+7x

Step-by-step explanation:

5 0
3 years ago
Help would be appreciated ☺️
ipn [44]
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4 out of 9 how many groups can be made?
Len [333]

Answer:

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Step-by-step explanation:


5 0
3 years ago
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