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bearhunter [10]
2 years ago
6

a football team gains 8 yards on their first play. they lose 5 yards on the next play. what two integers represent the two plays

?
Mathematics
1 answer:
Damm [24]2 years ago
8 0

Answer: 8 and - (negative) 5.

Step-by-step explanation: Nah.

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Find the value of x.
hjlf

Answer:

x = 14

Step-by-step explanation:

Since they are similar triangles, their sides are proportional

12 : 15  :: 8 : x - 4

Product of extremes = Product of means

12 × ( x- 4 ) = 15 × 8

12x -48 = 120

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12x = 168

x = 168/12

x = 14

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4 0
3 years ago
What do u think the answer is !!
AveGali [126]

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2 years ago
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Element X is a radioactive isotope such that every 51 years, its mass decreases by half. Given that the initial mass of a sample
pychu [463]

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Step-by-step explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

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a - x = amount left after decay process  

a) for completion of half life:  

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

51=\frac{0.69}{k}

k=\frac{0.69}{51}=0.0135years^{-1}

b) for  7500 g to reach to 6900 g

t=\frac{2.303}{0.0135}\log\frac{7500}{6900}

t=6years

It will take 6 years for 7500 grams of X to reach 6900 grams.

5 0
2 years ago
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Kitty [74]
8.25 i believe (sorry if i’m wrong )
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