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3 years ago

3. Jada has a coin jar containing n nickels and d dimes worth a total of $3.65. The

Mathematics

1 answer:

Ghella [55]3 years ago

3 0

Answer:

Step-by-step explanation:

Here, we want to find an equation in the options which is same as the equation given in the question;

The equation we are testing against is;

0.05n + 0.1d = 3.65

What we can do here is divide through by 0.01

So we will have;

0.05n/0.01 + 0.1d/0.01 = 3.65/0.01

= 5n + 10d = 365

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each day last week I sold 32, 45, 47, 63 and 72 product accessories. What was the median number of accessories sold for the week

Kaylis [27]

Answer:

answer is 47

Step-by-step explanation:

first arrange in ascending order

position of median =((N+1)÷2)th term *N is number of data

=6÷2 th term

=3 th term

Therefore 3rd term is 47

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3 years ago

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ArbitrLikvidat [17]

GAH is vertical to FAE

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A tank initially contains 50 liters of water with 15kg of salt mixed in. Salt water with concentration 1/3 kg/L runs in at the r

Nimfa-mama [501]

Answer:

13.57 kg

Step-by-step explanation:

Let the amount of salt in a tank be = $\frac{salt in the tank}{volume of salt in the tank}$

= $\frac{15}{50}$

= 0.3 kg/L

The concentration of salt coming into the tank = 0.333kg/L

We know that the concentration of salt leaving the tank should be:

amount of salt in the tank/volume of tank = y(t)/50 L

rate of change of salt = rate in - rate out

$\frac{dy}{dt}$ = 0.66 - $\frac{y}{50}$

solving the differential equation gives :

ln y = 0.66/y (t) - 0.02 t + C

Initial conditions, t= 0; y (0) = 15

then ln 15 = C

ln y = $\frac{0.66}{y}$ t - 0.02t + ln 15

ln $\frac{y}{15}$ = 0.02t

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the amount of salt in 5 mins will be:

y (t) = 15e(exp -0.02 (5)

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4 0

3 years ago

What is the simplest form of x2+5x-36/x2-16

Dmitry_Shevchenko [17]

Answer:

(x^4 + 5 x^3 - 16 x^2 - 36)/x^2

Step-by-step explanation:

Simplify the following:

x^2 + 5 x - 16 - 36/x^2

Put each term in x^2 + 5 x - 16 - 36/x^2 over the common denominator x^2: x^2 + 5 x - 16 - 36/x^2 = x^4/x^2 + (5 x^3)/x^2 - (16 x^2)/x^2 - 36/x^2:

x^4/x^2 + (5 x^3)/x^2 - (16 x^2)/x^2 - 36/x^2

x^4/x^2 + (5 x^3)/x^2 - (16 x^2)/x^2 - 36/x^2 = (x^4 + 5 x^3 - 16 x^2 - 36)/x^2:

Answer: (x^4 + 5 x^3 - 16 x^2 - 36)/x^2

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4 years ago

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sweet [91]

Answer:

2.3

Step-by-step explanation:

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4 years ago

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