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ASHA 777 [7]
2 years ago
9

Who ever answers first gets branliest :))

Mathematics
1 answer:
scoundrel [369]2 years ago
7 0
The answer is 36.86

(I think)
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What are the steps for 80% of 25​
Andrews [41]

Answer:

20

Step-by-step explanation:

25/x=100%/80%

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3 years ago
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Given: A, B, and C What is the value of X in the matrix equation AX + B = C?
Ksju [112]

Answer:

Option (2)

Step-by-step explanation:

Given expression is, AX + B = C

A=\begin{bmatrix}-3 & -4\\ 1 & 0\end{bmatrix}

B=\begin{bmatrix}-7 & -9\\ 4 & -1\end{bmatrix}

C=\begin{bmatrix}-42 & -20\\ 5 & 4\end{bmatrix}

AX + B = C

AX = C - B

C - B = \begin{bmatrix}-42 & -20\\ 5 & 4\end{bmatrix}-\begin{bmatrix}-7 & -9\\ 4 & -1\end{bmatrix} = \begin{bmatrix}-42+7 & -20+9\\ 5-4 & 4+1\end{bmatrix}

C - B = \begin{bmatrix}-35 & -11\\ 1 & 5\end{bmatrix}

Let  X=\begin{bmatrix}a & b\\ c & d\end{bmatrix}

AX = \begin{bmatrix}-3 & -4\\ 1 & 0\end{bmatrix}\times \begin{bmatrix}a & b\\ c & d\end{bmatrix}

     = \begin{bmatrix}(-3a-4c) & (-3b-4d)\\ a & b\end{bmatrix}

Since AX = C - B

\begin{bmatrix}(-3a-4c) & (-3b-4d)\\ a & b\end{bmatrix}=\begin{bmatrix}-35 & -11\\ 1 & 5\end{bmatrix}

Therefore, a = 1, b = 5

(-3a - 4c) = -35

3(1) + 4c = 35

3 + 4c = 35

4c = 32

c = 8

And (-3b - 4d) = -11

3(5) + 4d = 11

4d = -4

d = -1

Therefore, Option (2). X = \begin{bmatrix}1 & 5\\ 8 & -1\end{bmatrix} will be the answer.

7 0
3 years ago
The solution of the equation 2d - 6 = 5 is _____.
xeze [42]

Answer: d = 11/2 or 5 1/2

Step-by-step explanation:

2d - 6 = 5

    + 6  + 6

2d = 11

/2     /2

d = 11/2 or 5 1/2

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PLZ HELP AHHHH I NEED HELPEPWOEOW
Nat2105 [25]

Answer:

ops sorry thx for the free points

Step-by-step explanation:

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3 years ago
The price of a watch is decreased by 10% to 3600. what will be it's original price?​
LekaFEV [45]

Answer:

3960

Step-by-step explanation:

10% of 3600 = 360

3600 + 360 = 3960

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