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Sedbober [7]
3 years ago
12

If the sum of a number and one is tripled, the result is four less than twice the number. Find the number.

Mathematics
1 answer:
vagabundo [1.1K]3 years ago
8 0

x+1*3+y-4=x                    

the answer        

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In each of Problems 5 through 10, verify that each given function is a solution of the differential equation.
WARRIOR [948]

Answer:

For First Solution: y_1(t)=e^t

y_1(t)=e^t is the solution of equation y''-y=0.

For 2nd Solution:y_2(t)=cosht

y_2(t)=cosht  is the solution of equation y''-y=0.

Step-by-step explanation:

For First Solution: y_1(t)=e^t

In order to prove whether it is a solution or not we have to put it into the equation and check. For this we have to take derivatives.

y_1(t)=e^t

First order derivative:

y'_1(t)=e^t

2nd order Derivative:

y''_1(t)=e^t

Put Them in equation y''-y=0

e^t-e^t=0

0=0

Hence y_1(t)=e^t is the solution of equation y''-y=0.

For 2nd Solution:

y_2(t)=cosht

In order to prove whether it is a solution or not we have to put it into the equation and check. For this we have to take derivatives.

y_2(t)=cosht

First order derivative:

y'_2(t)=sinht

2nd order Derivative:

y''_2(t)=cosht

Put Them in equation y''-y=0

cosht-cosht=0

0=0

Hence y_2(t)=cosht  is the solution of equation y''-y=0.

3 0
3 years ago
Select the correct answer from each drop-down menu.
ElenaW [278]

Answer:

  ·  This image may result from the construction of <em>an angle congruent to a given angle</em>.

  ·  The next step in this construction is to set the compass width to <em>arc JK and draw an arc centered at L intersecting the existing arc through L</em>.

Step-by-step explanation:

If the step shown above results in point of intersection P, and the construction is completed by drawing ray DP, then this construction produces triangle DLP congruent to triangle BKJ. The angle at D will be congruent to the angle at B because CPCTC. Hence an angle congruent to a given angle will have been constructed.

8 0
3 years ago
Read 2 more answers
What's the correct answer to this question? I got it wrong and I need the correct one. Also, please show work. Thank you!
miv72 [106K]
A.) 7. Hope this helps
3 0
3 years ago
Evaluate the function below for x = 3.<br> F(X)= 2X² – 4x+7
monitta

Answer:

13 is the answer.

Step-by-step explanation:

F(3)=2(3)^2-4(3)+7

F(3)=2(9)-12+7

F(3)=18-12+7

F(3)=6+7

F(3)=13

3 0
3 years ago
The table show the average speed of two airplanes in a miles per hour. About how much faster is the foxbat than the Hawkeyes jus
Marizza181 [45]
Okay to find out you need to subtract the speed of Hawkeye from Foxbat
your difference will be your answer

1864.29 - 375.52 = 1488.77
 
So if to round it we will get 1489


6 0
3 years ago
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