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3 years ago

PLEASE HELP I HAVE 3 MINUTES TO TURN THISS IN HELPPPP!!!!! You bought 10 Frisbees for $11.90. What was the cost per Frisbee?

Mathematics

2 answers:

kompoz [17]3 years ago

8 0

Answer:

each frisbee costs $1.19

Liono4ka [1.6K]3 years ago

5 0

Answer:

It should be $1.19 I hope this helps

Step-by-step explanation:

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whats the circumference of a circle with radius of 7 inches round your answer to the nearest inch a. 44 inches b. 41 inches c. 1

ivolga24 [154]

Circumference of a cirlce=2πr
Data:
r=7 in

Circumference=2(3.141592....)(7 in)=43.9822...in≈44 in.

Answer: 44 inches.

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3 years ago

What would an 18% increase of 90 be?

madam [21]

Answer:

106.2

Step-by-step explanation:

A 18% increase of a number is the same as multiplying it by 1.18.

If we multiply 90 by 1.18 we get:

90 * 1.18

106.2

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3 years ago

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svet-max [94.6K]

Answer:

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Step-by-step explanation:

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3 years ago

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A group of 22 students participated in a Race. Their scores are below

malfutka [58]

Answer:

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Step-by-step explanation:

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3 years ago

Solving separable differential equation DY over DX equals xy+3x-y-3/xy-2x+4y-8

Ivanshal [37]

It looks like the differential equation is

$\dfrac{dy}{dx} = \dfrac{xy + 3x - y - 3}{xy - 2x + 4y - 8}$

Factorize the right side by grouping.

$xy + 3x - y - 3 = x (y + 3) - (y + 3) = (x - 1) (y + 3)$

$xy - 2x + 4y - 8 = x (y - 2) + 4 (y - 2) = (x + 4) (y - 2)$

Now we can separate variables as

$\dfrac{dy}{dx} = \dfrac{(x-1)(y+3)}{(x+4)(y-2)} \implies \dfrac{y-2}{y+3} \, dy = \dfrac{x-1}{x+4} \, dx$

Integrate both sides.

$\displaystyle \int \frac{y-2}{y+3} \, dy = \int \frac{x-1}{x+4} \, dx$

$\displaystyle \int \left(1 - \frac5{y+3}\right) \, dy = \int \left(1 - \frac5{x + 4}\right) \, dx$

$\implies \boxed{y - 5 \ln|y + 3| = x - 5 \ln|x + 4| + C}$

You could go on to solve for $y$ explicitly as a function of $x$ , but that involves a special function called the "product logarithm" or "Lambert W" function, which is probably beyond your scope.

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2 years ago