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EleoNora [17]
4 years ago
14

Identify whether each of the following equations has a unique solution, no solution, or infinitely many solutions. 3x+5=-2, 6(x-

11)= 15-4x
Mathematics
1 answer:
iragen [17]4 years ago
7 0
1_
3x + 5 =  - 2 \\ 3x =  - 5 - 2 = 7 \\ x =  \frac{7}{3}
2_
6(x  - 11) = 15 - 4x \\ 6x - 66 = 15 - 4x \\ 6x + 4x  = 15 + 66\\ 10x = 81  \:  \:  \:  \:  \:  x =  \frac{81}{10}





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Solve the differential equation dy/dx= y^2/x^3 for y=f(x) with the condition y(1) = 1.
Gennadij [26K]
We will use seperation of variables

tmes both sies by 1/(y^2)
times both sides by dx

we get

1/(y^2)dy=1/(x^3)dx
integrate both sides
-1/y=1/(2x^2)+c

initial condition, (1,1)
-1/1=1/(2(1^2))+c
-1=1/2+c
-3/2=c


-1/y=1/(2x^2)-3/2
solve for y
-1=y(1/(2x^2)-3/2)
y=-1/(1/2x^2-3/2)
y= \frac{2x^2}{3x^2-1}
6 0
3 years ago
Can someone help me please
saul85 [17]
Using the Law of Sines  (sina/A=sinb/B=sincC for any triangle)

sinc/28=sin90/53  (sin90=1)  multiply both sides by 28

sinc=28/53  take the inverse of sin (arcsin) of both sides

c=arcsin(28/53)°

c≈31.89°  (to nearest hundredth of a degree)

So it is obvious that they rounded to nearest tenth of a degree

c≈31.9°
5 0
3 years ago
Read 2 more answers
Which number line model represents the expression 5/2 + 3
ELEN [110]

Answer:

It's line model A

Step-by-step explanation:

8 0
3 years ago
Suppose M is the midpoint of line FG. Use the given information to find the missing measure or value.
tangare [24]
If it is the midpoint, then FG= FM+MG


Also, this means that they are of equal lenght, so

FM=MG
<span>5y + 13= 5-3y
5y+3y=5+13
8y=18
y=\frac{18}{8}=2.25
</span>
which means that the two halves are equal to 5y+13=5*2.25+13=24.25

and FG is double the lenght:

24.25*2=49


8 0
3 years ago
the following numbers in order from least to greatest, with the least at the top. V213, 14, 14.33 - V213 = 14 = 14.33 !!
IrinaVladis [17]

Answer:

√213 > 14(⅖) > 14.33

Step-by-step explanation:

√213 = 14.59

14(⅖) = 14.4

14.33 = 14.33

Smallest = 14.33

Greatest number = √213

3 0
3 years ago
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