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2 years ago

The Celsius temperature, C, of a chemical reaction increases and then decreases over time according to the

Mathematics

1 answer:

mixas84 [53]2 years ago

5 0

Answer:

See explanations below

Step-by-step explanation:

Given the quadratic formula that expresses the temperature of a chemical reaction

C(t)=-12t² +8t +93

Given that C(t) = 110°, we are to find the value of t

Substitute

110 = -12t² +8t +93

-12t² +8t +93-110 = 0

-12t² +8t -17 = 0

12t² -8t + 17 = 0

Using the general formula;

t = -(-8)±√(-8)²-4(12)(17)/2(12)

t = 8±√64-816/24

t = 8±√-752/24

<em>Since the value of t will give a complex number, hence the time doesn't exist when the reaction reaches 110°C</em>

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Step-by-step explanation:

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3 years ago

A number is greater than 8. The same number is less than 10. The inequalities x greater-than 8 and x less-than 10 represent the

jok3333 [9.3K]

Answer:

There are a few solutions because there are some fractions and decimals between 8 and 10

Step-by-step explanation:

Let the unknown number be 'x'

If the number is greater than 8 and the same number is less than 10, this can be expressed as;

x>8 and x < 10

Note that if x>8, then 8<x

The resulting inequalities are now;

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Combining both inequalities we have: 8<x<10

Since the inequality didn't tell us that the variable 'x' is equal to 8 and 10, this means that our solution falls between 8 and 10 and the value of integer that falls within this range is 9. Other values that falls within this range are decimals and fractions.

Therefore it can be concluded that there are a few solutions because there are some fractions and decimals between 8 and 10

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3 years ago

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lyudmila [28]

Answer:

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Step-by-step explanation:

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