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svetoff [14.1K]
3 years ago
11

Jenny was planning a trip to the United Arab Emirates. Before going, she did some research and learned that the exchange rate is

for 4 Dirhams for every one dollar. How many Dirhams would she get if she exchanged five dollars?
Mathematics
1 answer:
Blizzard [7]3 years ago
5 0
4 dirhams is equal to 1 dollar so if you were to multiply each by 5 you would have 20 dirhams equaling 5 dollars
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Juanita is planting a flower garden. She wants to plant 24 tulips, and twice as many daffodils as tulips. A tulip plant costs $3
slavikrds [6]

Answer:

The total cost is \$168

Step-by-step explanation:

Let

x-----> the number of tulips

y-----> the number of daffodils

C-----> the total cost

we know that

x=24\ tulips

y=2x

substitute the value of x

y=2(24)=48\ daffodils

Find the total cost

C=3x+2y

substitute

C=3(24)+2(48)=\$168

5 0
2 years ago
How long will it take Jordon to drive 600 miles
Anit [1.1K]

Answer:

about 9.23 miles or 9 miles

Step-by-step explanation:

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3 0
3 years ago
If y=e5t is a solution to the differential equation
a_sh-v [17]

Answer:

k = 30, y(t) = C_1e^{5t}+C_2e^{6t}

Step-by-step explanation:

Since y=e^{5t} is a solution, then it must satisfy the differential equation. So, we calculate the derivatives and replace the value in the equation. We have that

\frac{d^2y}{dt^2} = 25 e^{5t},\frac{dy}{dt} = 5e^{5t}

Then, replacing the derivatives in the equation we have:

25e^{5t}-11(5)e^{5t}+ke^{5t}=0 e^{5t}(25-55+k) =0

Since e^{5t} is a positive function, we have that

25-55+k = 0 \rightarrow k = 30.

Now, consider a general solution y(t) = Ae^{rt}, A \in \mathbb{R}, then, by calculating the derivatives and replacing them in the equation, we get

Ae^{rt}(r^2-11r+30)=0

We already know that r=5 is a solution of the equation, then we can divide the polynomial by the factor (r-5) to the get the other solution. If we do so, we get that (r-6)=0. So the other solution is r=6.

Therefore, the general solution is

y(t) = C_1e^{5t}+C_2e^{6t}

8 0
3 years ago
Help pls i need to knowewwwww
Vladimir [108]
Diameter: 24
radius: 12
3 0
3 years ago
Read 2 more answers
A. -3<br> B. -4<br> C. -2 and 1<br> D. 0
Alinara [238K]
When x=1 and -2 so it is C
8 0
3 years ago
Read 2 more answers
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