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inysia [295]
3 years ago
14

Solve for A. BA + C = D A. A = D - B - C B. A = (D-C)/B C. A = (C-D)/B

Mathematics
2 answers:
sveta [45]3 years ago
7 0

Answer:

A = (D-C)/B

Step-by-step explanation:

BA + C = D  

Subtract C from each side

BA +C -C = D -C

BA = D-C

Divide each side by B

BA /B = (D-C)/B

A = (D-C)/B

Effectus [21]3 years ago
6 0

Answer:A

Step-by-step explanation:

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Solve for x: x-9=<br> 0<br> A.x- -2<br> CB. = 2<br> C<br> C. X = 20
mars1129 [50]

Answer:

x = 9

Step-by-step explanation:

Well, let's solve it!

x - 9 = 0

Let's add 9 to both sides to isolate the variable and maintain equality.

We end up with :

x = 9 since -9 and 9 cancel out and 0 + 9 = 9.

5 0
4 years ago
Read 2 more answers
5÷x-4 - 2÷x+2 = 4÷x-4
Alborosie
I'd suggest you begin by subtracting 4 / (x-4) from both sides.  Doing that would leave you with    1 / (x-4)   -     2 / (x+2) =  0.

LCD is (x-4)(x+2).  Mult. all three terms by (x-4)(x+2).  The resulting equation is 

x+2 - 2(x-4) = 0.     Then x+2 = 2x - 8  =>  x = 10

Subst. 10 for x in the original equation to verify that 10 is indeed a solution.


8 0
3 years ago
Find the average value of f over region
yan [13]
The area of D is given by:

\int\limits \int\limits {1} \, dA = \int\limits_0^7 \int\limits_0^{x^2} {1} \, dydx  \\  \\ = \int\limits^7_0 {x^2} \, dx =\left. \frac{x^3}{3} \right|_0^7= \frac{343}{3}

The average value of f over D is given by:

\frac{1}{ \frac{343}{3} }  \int\limits^7_0  \int\limits^{x^2}_0 {4x\sin(y)} \, dydx  = -\frac{3}{343}  \int\limits^7_0 {4x\cos(x^2)} \, dx  \\  \\ =-\frac{3}{343} \int\limits^{49}_0 {2\cos(t)} \, dt=-\frac{6}{343} \left[\sin(t)\right]_0^{49} \, dt=-\frac{6}{343}\sin49
3 0
3 years ago
Katie bought 4 sweaters that each cost the same amount and 1 skirt that cost $20. the items she bought cost a total of 160$. wri
Rufina [12.5K]

Answer:

160-20=140. 140/4=$35.

4 0
3 years ago
Multiply. give your answer in standard form. (2n^2-7n+2)*(3n+1)
noname [10]
For this case we have the following polynomials:
 (2n ^ 2-7n + 2)
 (3n + 1)
 Multiplying we have:
 (2n ^ 2-7n + 2) * (3n + 1)
 (6n ^ 3-21n ^ 2 + 6n) + (2n ^ 2-7n + 2)
 Rewriting we have:
 6n ^ 3 + n ^ 2 (-21 + 2) + n (6-7) + 2
 6n ^ 3 - 19n ^ 2 - n + 2
 Answer:
 
6n ^ 3 - 19n ^ 2 - n + 2
6 0
3 years ago
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