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Liula [17]
3 years ago
5

What is the value of a? brainliest for right answer

Mathematics
2 answers:
Anika [276]3 years ago
5 0

You can find C with pythagorean theorem. And both triangles should be similar (really congruent but it seems like they just decided to not math properly) so you should be able to divide 4/3 then multiply 4 by the outcome. I may be off though bc I have been out of school for 2 months and can't fully remember.

Sholpan [36]3 years ago
4 0

Edit: Nevermind I messed up

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The solution of a certain differential equation is of the form y(t)=aexp(7t)+bexp(11t), where a and b are constants. The solutio
Solnce55 [7]

Answer:

Step-by-step explanation:

Given that the solution of a certain differential equation is of the form

y(t) = ae^{7t} +be^{11t}

Use the initial conditions

i) y(0) =1

1=a(1)+b(1)\\a+b=1 ... I

ii) y'(0) = 4

Find derivative of y first and then substitute

y'(t) = 7ae^{7t} +11be^{11t}\\y'(0) =7a+11b \\7a+11b =4 ...II

Now using I and II we solve for a and b

Substitute b = 1-a in II

7a+11(1-a) = 4\\-4a+11 =4\\-4a =-7\\a = 1.75 \\b = -0.75

Hence solution is

y(t) = 1.75e^{7t} -0.75e^{11t}

8 0
3 years ago
Read 2 more answers
pheobe has 9 rocks. she puts the rocks into 3 boxes. Each box 1 more rock then the last. How many rocks are in each box
Svetllana [295]
Hello!

We can write this as the system of equations below. We have boxes A, B, and C.

A+B+C=9
B=A+1
C=B+1

First of all we can plug our B and C values into the first equation and solve for A.

A+A+1+A+1+1=9
3a+3=9
3a=6
a=2

Now we can plug our a value into the other equations.

B=2+1
B=3

C=3+1
C=4

Therefore, there are 2 rocks in one box, three in another, and 4 in the last.

I hope this helps!
4 0
3 years ago
Cost of computer $1000.00 (listed in order)
agasfer [191]
The answer would be A)$679.80
The reason for this is let’s start with the mark up of 10%. Meaning we will add the result of the markup to our first number We would take 1000*.1 which would give us 100.
Add that to the original to give you $1,100.
Then the item was discounted for 40% meaning we take away the result of 1,100*.4 which equals 440. 1100-440=660.
Then taxes are added on to the total so you would do 660*.03 which would give you 19.8
660+19.8 gives you$679.80.
8 0
3 years ago
Read 2 more answers
The figure shows triangle DEF and line segment BC, which is parallel to EF: Triangle DEF has a point B on side DE and point C on
Svetlanka [38]



Part A:
-Yes because the are have the same angles and are the same shape.


Part B:
-Line segment BC corresponda to line segment EF.


Part C:
-Angle D corresponds with angle F. They are on the same line.
5 0
3 years ago
Write an equivalent expression for -6(a+8)
stepan [7]
-6a-48 that would be it because you are only distributing the -6
8 0
3 years ago
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