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Dafna1 [17]
3 years ago
6

Correct answer gets brainliest! :)

Mathematics
2 answers:
masya89 [10]3 years ago
7 0

all you have to do is add them all up


4x + 3x + 2x = 9x and since everything is subtracting you add the subtraction sign to it then you add the last 2 numbers at the end witch is 3 so the answer would be 9x - 3 witch is D

Morgarella [4.7K]3 years ago
3 0

The only correct answer is "D" 9X-3.

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50 points!! Instructions: Find the missing side. Round your answer to the nearest tenth.
postnew [5]

Answer:

16.4 units to the nearest tenth.

Step-by-step explanation:

sin 66 = 15 / x

x *  sin 66 = 15

x = 15 / sin 66

= 16.4196

7 0
2 years ago
What is the answer to 7+y<12
LiRa [457]

Step-by-step explanation:

7 + y < 12 it can also be written as

7 + y = 12

y = 12 - 7

y = 5

or

y < 5

Hope it will help :)

3 0
3 years ago
the ratio of the shoes sold to sndals sold was 3:10 if there were 14 more sandalssoldhow many shoes weresold?
Dafna11 [192]
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7 0
4 years ago
Whats the answer to #9 i need help fast!!
vekshin1
I got 784 inches cubed, I cut the figure into two, the first one was 8×4×14=448, the second was 8×3×14=336,
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5 0
3 years ago
Find the general solution of x'1 = 3x1 - x2 + et, x'2 = x1.
Ann [662]
Note that if {x_2}'=x_1, then {x_2}''={x_1}', and so we can collapse the system of ODEs into a linear ODE:

{x_2}''=3{x_2}'-x_2+e^t
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which is a pretty standard linear ODE with constant coefficients. We have characteristic equation

r^2-3r+1=\left(r-\dfrac{3+\sqrt5}2\right)\left(r+\dfrac{3+\sqrt5}2\right)=0

so that the characteristic solution is

{x_2}_C=C_1e^{(3+\sqrt5)/2\,t}+C_2e^{-(3+\sqrt5)/2\,t}

Now let's suppose the particular solution is {x_2}_p=ae^t. Then

{x_2}_p={{x_2}_p}'={{x_2}_p}''=ae^t

and so

ae^t-3ae^t+ae^t=-ae^t=e^t\implies a=-1

Thus the general solution for x_2 is

x_2=C_1e^{(3+\sqrt5)/2\,t}+C_2e^{-(3+\sqrt5)/2\,t}-e^t

and you can find the solution x_1 by simply differentiating x_2.
7 0
3 years ago
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