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Juliette [100K]
3 years ago
8

4.78 gallons of milk is sold for $14.12. If you have $25.60 in your wallet. How many gallons of milk you can buy?

Mathematics
1 answer:
erastovalidia [21]3 years ago
5 0

Answer:

8.67

Step-by-step explanation:

8.67 gallons roughly

14.12 divided by 4.78 is 2.95 per gallon of milk

25.60 divided by 2.95 is 8.6779 gallons of milk

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Write the ratio 1 1/7:1/9 in simplest form
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[tex]<span>1\dfrac{1}{7}=\dfrac{1\cdot7+1}{7}=\dfrac{8}{7}\\\\1\dfrac{1}{7}:\dfrac{1}{9}=\dfrac{8}{7}:\dfrac{1}{9}=\dfrac{8}{7}\cdot\dfrac{9}{1}=\dfrac{72}{7}[tex]

Answer: 1 1/7 : 1/9 = 72 : 7
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3 years ago
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Bingel [31]

Answer:

See below.

Step-by-step explanation:

First, notice that this is a composition of functions. For instance, let's let f(x)=\sqrt{x} and g(x)=7x^2+4x+1. Then, the given equation is essentially f(g(x))=\sqrt{7x^2+4x+1}. Thus, we can use the chain rule.

Recall the chain rule: \frac{d}{dx}[f(g(x))]=f'(g(x))\cdot g'(x). So, let's find the derivative of each function:

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We can use the Power Rule here:

f'(x)=(x^\frac{1}{2})'=\frac{1}{2}(x^{-\frac{1}{2}  })=\frac{1}{2\sqrt{x}}

Now:

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Again, use the Power Rule and Sum Rule

g'(x)=(7x^2+4x+1)'=(7x^2)'+(4x)'+(1)'=14x+4

Now, we can put them together:

y'=f'(g(x))\cdot g'(x)=\frac{1}{2\sqrt{g(x)}} \cdot (14x+4)

y'=\frac{14x+4}{2\sqrt{7x^2+4x+1} } =\frac{7x+2}{\sqrt{7x^2+4x+1} }

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3 years ago
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MariettaO [177]

Answer:

It would be A,B

Step-by-step explanation:

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Pic included&gt; a or c?
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I believe the answer would be a.
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