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LiRa [457]
3 years ago
6

If cot xº = 3/4 what is the value of b?

Mathematics
1 answer:
balandron [24]3 years ago
3 0

Answer:

\cot(x)  =  \frac{3}{4}  =  \frac{10.5}{2b}

4 \times 10.5 = 2 b \times 3

42 = 6b

b = 7

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Please answer this correctly
g100num [7]

Answer:

593 mm^{2}

Step-by-step explanation:

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4 0
3 years ago
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Use the augmented matrix to determine if the linear system is consistent. Is the linear system represented by the augmented matr
Crazy boy [7]

Answer:

The correct option is (A).

Step-by-step explanation:

If the reduced row echelon form of the coefficient matrix of a linear system of equations in four different variables has a pivot, i.e. 1, in each column, then the reduced row echelon form of the coefficient matrix is say A is an identity matrix, here I₄, since there are 4 variables.

\left[\begin{array}{cccc}1&0&0&0\\0&1&0&0\\0&0&1&0\\0&0&0&1\end{array}\right]

Then the corresponding augmented matrix [ A|B] , where the matrix is the representation of the linear system is AX = B, must be:

\left[\begin{array}{ccccc}1&0&0&0&a\\0&1&0&0&b\\0&0&1&0&c\\0&0&0&1&d\end{array}\right]

Now the given linear system is consistent as the right most column of the augmented matrix is a linear combination of the columns of A as the reduced row echelon form of A has a pivot in each column.

Thus, the correct option is (A).

8 0
3 years ago
Select the expression equivalent to (-2x+8.1y)-(-9x+5.3y)
Volgvan

Answer:

D

Step-by-step explanation:

-2x+8.1y

+9x-5.3y

________

get the answer 7x+2.8y

3 0
3 years ago
(2a+b)² -(3a+4b)(2a+7b)​
BabaBlast [244]
-2a^2 - 25ab - 27b^2

hope this helps :)
7 0
3 years ago
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