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andreev551 [17]
3 years ago
10

The dimensions x and y of an object are related to its volume V by the formula Upper V equals 12 x squared y. a. How is StartFra

ction dV Over dt EndFraction related to StartFraction dy Over dt EndFraction if x is​ constant? b. How is StartFraction dV Over dt EndFraction related toStartFraction dx Over dt EndFraction if y is​ constant? c. How is StartFraction dV Over dt EndFraction related toStartFraction dx Over dt EndFraction and StartFraction dy Over dt EndFraction if neither x nor y is​ constant?
Mathematics
1 answer:
stepan [7]3 years ago
3 0

Answer:

Step-by-step explanation:

V = 12*x²*y

a)   DV/Dt   = 12*x²*Dy/Dt

b)   DV/Dt   = 24*x*y*Dx/Dt

c)  DV/Dt    =  24*x*y*Dx/Dt  * 12x²Dy/Dt

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Linear equations 3(x+1)=3x+3
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3 0
3 years ago
Please help me on this it’s due
olya-2409 [2.1K]
<h3>Answer:  5 cakes</h3>

================================================

Explanation:

Let's start off converting the mixed number 12 & 1/4 to an improper fraction.

a \frac{b}{c} = \frac{a*c+b}{c}\\\\12 \frac{1}{4} = \frac{12*4+1}{4}\\\\12 \frac{1}{4} = \frac{49}{4}\\\\

Do the same for the other mixed number 2 & 1/3.

a \frac{b}{c} = \frac{a*c+b}{c}\\\\2 \frac{1}{3} = \frac{2*3+1}{3}\\\\2 \frac{1}{3} = \frac{7}{3}\\\\

-----------------------

From here, we divide the two fractions. I converted them to improper fractions to make the division process easier.

\frac{49}{4} \div \frac{7}{3} = \frac{49}{4} \times \frac{3}{7}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{49\times 3}{4\times 7}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{7\times 7\times 3}{4\times 7}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{7\times 3}{4}\\\\\frac{49}{4} \div \frac{7}{3} = \frac{21}{4}\\\\

The last step is to convert that result to a mixed number.

\frac{21}{4} = \frac{4*5+1}{4}\\\\\frac{21}{4} = \frac{4*5}{4}+\frac{1}{4}\\\\\frac{21}{4} = 4+\frac{1}{4}\\\\\frac{21}{4} = 5 \frac{1}{4}\\\\

Note that 21/4 = 5.25 and 1/4 = 0.25 to help check the answer.

-----------------------

Therefore, she can make 5 cakes. The fractional portion 1/4 is ignored since we're only considering whole cakes rather than partial ones.

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