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V125BC [204]
3 years ago
10

Write a real world problem with a percent that can be solved by using the proportion 3/b=60/100

Mathematics
2 answers:
Artist 52 [7]3 years ago
8 0

Answer:

A tree of 60 feet casts the shadow of 100 feet, at the same time, what is the length of the shadow of a boy who is 3 feet tall ?

Solution :

Let b represents the length ( in ft ) of the shadow of the boy,

∵ Height of the boy = 3 ft,

So, the ratio of the height of boy and his shadow = \frac{3}{b}

Now, the tree of 60 ft long casts 100 ft shadow,

So, the ratio of height of tree and its shadow = \frac{60}{100}

At the same time,

\frac{3}{b}=\frac{60}{100}

Which is the required equation.

iris [78.8K]3 years ago
7 0
Kyle received 60/100 on his algebra test.  If he scored 3 points, how many points was the test out of? Answer is 5.
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a.

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b.

The equation of a line is y=kx when it passes though the origin (which this one does). We know the value of k, so our equation is y=0.9x, where y is the cost and x is the amount of songs.

c.

Susan downloads 60 songs monthly. We're being asked if it would be cheaper to use the service where you play $58 total, or $0.90 per song. So for the package price, let's figure out the total cost (y) for 60 songs (x=60):

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So it would be cheaper to use the package price from the online music vendor.

3 0
3 years ago
Which expression is equivalent to (82)−4?
fomenos

(8^2)^-4 = 1/8^8

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Use implicit differentiation to find an equation of the tangent line to the curve at the given point. x2 + 2xy − y2 + x = 20, (3
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\bf x^2+2x6-y^2+x=20\impliedby taking\ \cfrac{dy}{dx}\textit{ to both sides}
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\bf \cfrac{dy}{dx}=\cfrac{-3-4}{3-4}\implies \cfrac{dy}{dx}=7\\\\
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