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olganol [36]
3 years ago
14

Y+x=1 show whether x and y show direct variation ​plzz helpp

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
7 0

Answer:

No

Step-by-step explanation:

Please write:  "Determine whether y+x=1 shows direct variation."

No, it does not, because of the constant term, 1.

If we were to eliminate the 1 and write y + x = 0, then yes, this would represent direct variation.

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agasfer [191]
7. D
8. D
9. D
10.C

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\frac{y2 - y1}{x2 - x1}
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so you plug the numbers in
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3 years ago
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A 30 gram sample of a substance that's used to sterilize surgical instruments has a k-value of 0.1235. Find the substances half
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Answer : The substances half life in days is, 5.6 days.

Step-by-step explanation :

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

All radioactive decays follow first order kinetics.

The relation between the half-life and rate constant is:

k=\frac{0.693}{t_{1/2}}

where,

k = rate constant = 0.1235 per days

t_{1/2} = half-life

Now put all the given values in the above formula, we get:

0.1235\text {days}^{-1}=\frac{0.693}{t_{1/2}}

t_{1/2}=5.6\text{ days}

Thus, the substances half life in days is, 5.6 days.

5 0
3 years ago
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