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elena55 [62]
3 years ago
7

Given this number line, AB=?

Mathematics
2 answers:
Marta_Voda [28]3 years ago
6 0

Answer:

28

Step-by-step explanation:

AB

4(7)=28

ss7ja [257]3 years ago
4 0
AB= 28 because when 2 variables or numbers are together, that means multiply those 2, so A= 4 and B= 7, 4 x 7= 28
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What is -0.75p-2=0.25p
ki77a [65]

you move first the number without the variable to the other side with the opposite sign

-0.75p=0.25+2

-0.75p=2.25

then as -0.75 is multiplying you pass it to the other side dividing

p=2.25/-0.75

p=-3



6 0
4 years ago
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What is the lowest common multiple of 20 and 45?
netineya [11]
180 is that I think not for sure
4 0
4 years ago
26 = 50 + 1 <br><br><br><br><br> whatsttatata
lesya692 [45]

Answer:

51

Step-by-step explanation:

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5 0
3 years ago
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Solve: (3x^2-y)dx + (4y^3-x)dy =0 and find the solution passing through (1,1).
nordsb [41]

Step-by-step explanation:

The given equation is

(3x^{2}-y)dx+(4y^{3}-x)dy=0\\M(x,y)dx+N(x,y)dy=0

As a check for exactness we have

\frac{\partial N}{\partial x}=\frac{\partial M}{\partial y}\\\\\therefore \frac{\partial N}{\partial x}=\frac{\partial (4y^{3}-x)}{\partial x} =-1\\\\\frac{\partial M}{\partial y}=\frac{\partial (3x^{3}-y)}{\partial y} =-1\\\\\therefore \frac{\partial N}{\partial x}=\frac{\partial M}{\partial y}=-1

Hence the given equation is an exact differential equation and thus the solution is given by

thus the solution is given by

u(x,y)=\int M(x,y)\partial x+\phi (y)\\\\u(x,y)=\int (3x^{2}-y)\partial x+\phi (y,c)\\\\u(x,y)=x^{3}-xy+\phi (y,c)\\\\

Similarly we have

u(x,y)=\int N(x,y)\partial y+\phi (x,c)\\\\u(x,y)=\int (4y^{3}-x)\partial y+\phi (x,c)\\\\u(x,y)=y^{4}-xy+\phi (x,c)\\\\

Comparing both the solutions we infer

\phi (x,c)=x^{3}+c

Hence the solution becomes

u(x,y)=x^{3}+y^{4}-xy=c

given boundary condition is that it passes through (1,1) hence

1^{3}+1^{4}-1=c\\\\\therefore c=1

thus solution is

u(x,y)=x^{3}+y^{4}-xy=1

4 0
3 years ago
An investigator purchased 150 shares of stocks at $12.60 per share, and sold the shares later for $11.94 per share. Calculate th
ziro4ka [17]

Given Information:

Number of shares = 150

Buying rate = $12.60 per share

Selling rate = $11.94 per share

Required Information:

Profit or loss = ?

Answer:

Loss = $99

Step-by-step explanation:

The total purchasing cost of the shares is

C = Number of shares*Buying rate

C = 150*$12.60

C = $1890

The total selling cost of the shares is

S = Number of shares*Selling rate

S = 150*$11.94

S = $1791

Profit or loss = Selling cost - Buying cost

Profit or loss = $1791 - $1890

Profit or loss = -$99

Therefore, the investigator has incurred a loss of $99 by this transaction.

7 0
4 years ago
Read 2 more answers
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