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Anna11 [10]
4 years ago
6

Joe spends $8 on lunch and 6.50 on dry cleaning.He also buys 2 shirts that cost the same amount. Joe spends a total of $52.What

is the cost of each shirt?
Mathematics
2 answers:
Ivahew [28]4 years ago
5 0
It would be 18.75 per shirt you buy
emmainna [20.7K]4 years ago
4 0
52-8=44
44-6.50=37.50
37.50/2=18.75
18.75 per shirt
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SCALCET8 3.9.017.MI. Two cars start moving from the same point. One travels south at 48 mi/h and the other travels west at 20 mi
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Answer:

The rate at which the distance between the cars increasing two hours later=52mi/h

Step-by-step explanation:

Let

Speed of one car, x'=48 mi/h

Speed of other car, y'=20 mi/h

We have to find the rate at which the distance between the cars increasing two hours later.

After 2 hours,

Distance traveled by one car

x=48\times 2=96 mi

Using the formula

Distance=Time\times speed

Distance traveled by other car

y=20\times 2=40 mi

Let z be the distance between two cars after 2 hours later

z=\sqrt{x^2+y^2}

Substitute the values

z=\sqrt{(96)^2+(40)^2}

z=104 mi

Now,

z^2=x^2+y^2

Differentiate w.r.t t

2z\frac{dz}{dt}=2x\frac{dx}{dt}+2y\frac{dy}{dt}

z\frac{dz}{dt}=x\frac{dx}{dt}+y\frac{dy}{dt}

Substitute the values

104\frac{dz}{dt}=96\times 48+40\times 20

\frac{dz}{dt}=\frac{96\times 48+40\times 20}{104}

\frac{dz}{dt}=52mi/h

Hence, the rate at which the distance between the cars increasing two hours later=52mi/h

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3 years ago
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