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Pachacha [2.7K]
2 years ago
15

Describe how you regroup when you find the sum of 64+43

Mathematics
2 answers:
Ivenika [448]2 years ago
8 0
When adding two digit numbers u will be looking at the ones and deciding if they can regroup them for a ten. You might want to equate regrouping with trading a term that you will understand immediately you will begin to add 2 digit numbers by using ten and ones blocks. And the answer is (107)
tresset_1 [31]2 years ago
5 0
When you do an addition problem like 77 + 23 you put each number on top of the other in either way you want to put (In addition) so if you reach a number that goes to ten or up to nineteen you will have to add a one to the seven if you end up at 20 you have to add 2 to the 7 but the only, but your case is different, You would have to add four plus three giving you a seven and and 6 plus 4 giving you a 10 so just put the 10 to the 7 giving you 107
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Find the general solution of the given higher-order differential equation. d3u dt3 + d2u dt2 − 2u = 0
STALIN [3.7K]

\dfrac{\mathrm d^3u}{\mathrm dt^3}+\dfrac{\mathrm d^2u}{\mathrm dt^2}-2u=0

This ODE has characteristic equation

r^3+r^2-2=(r^3-r)+(r^2+r-2)=r(r^2-1)+(r+2)(r-1)

=(r(r+1)+(r+2))(r-1)=(r^2+2r+2)(r-1)=0

which has roots at r=1,-1\pm i. Then the characteristic solution to the ODE is

u(t)=C_1e^t+C_2e^{(-1+i)t}+C_3e^{(-1-i)t}

\implies\boxed{u(t)=C_1e^t+C_2e^{-t}\cos t+C_3e^{-t}\sin t}

6 0
3 years ago
On the map of a town, the library is located at (–8, 8), and the seafood market is located at (–8, 2). Mary walks from the libra
sertanlavr [38]

6 units. have a great day!!!!

6 0
3 years ago
Read 2 more answers
AC = 3x -8, BC = -7 + 2x, and AB = 8.<br> Find BC.
Rainbow [258]

Answer:

AB+BC+AC=180°

8 - 7 + 2x +3x -8= 180°

-7+5x=180°

x=180°+7/5

x=37.4°

again

BC=-7+2*37.4

=67.8°

4 0
1 year ago
What is sum of -3x^2 - 7x + 9 and - 5x^2 + 6x - 4 ​
valkas [14]
-8x2-x +5 hope this helps
8 0
2 years ago
Can you please answer this question ​
schepotkina [342]

Answer:

1/40

219/250

69/16

Step-by-step explanation:

1.

0.025=(025)/(1000)=1/40

2.

0.876=876/1000=219/250

3.

4.3125=43125/10000=1725/400=69/16

4 0
2 years ago
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