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3 years ago

Which of these is part of the solution for x>-5? А.) -15 B.) -6 С.) -5 D.) 5

Mathematics

1 answer:

Anna35 [415]3 years ago

3 0

Answer:

Step-by-step explanation:

ABC are all less than -5

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Catherine has an unpaid balance on her credit card of $345.38. She has new charges of $195.65 this month and her monthly interes

OLEGan [10]

Answer:

345.38+195.65+((345.38×(0.0175÷12))

=541.53

4 0

3 years ago

Solve the absolute value equation |x| − 2 = 5 to find the distance Mary can walk forward, x, in 5 seconds.

Alisiya [41]

Answer:

x = 7 m and x = −7 m

Step-by-step explanation:

Its a modulus problem

concept

|x| = x when x>=0

|x| = -x when x < 0

____________________________________

Now given

|x| − 2 = 5

adding 2 both sides

|x| − 2 + 2 = 5 + 2

|x| = 7

now

x = 7 when x >= 0

x = -7 when x<0

Thus, correct answer is x = 7 m and x = −7 m

7 0

3 years ago

Please help will give brainliest

eduard

Answer:

Step-by-step explanation:

2nd avenue is a horizontal line, parallel to the x-axis.

The slope of a horizontal line is zero.

Answer: slope = 0

7 0

3 years ago

[10] In the following given system, determine a matrix A and vector b so that the system can be represented as a matrix equation

irina1246 [14]

Answer:

$y=-\frac{158}{579}$

Step-by-step explanation:

To find the matrix A, took all the numeric coefficient of the variables, the first column is for x, the second column for y, the third column for z and the last column for w:

$A=\left[\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right]$

And the vector B is formed with the solution of each equation of the system: $b=\left[\begin{array}{c}3\\-3\\6\\1\end{array}\right]$

To apply the Cramer's rule, take the matrix A and replace the column assigned to the variable that you need to solve with the vector b, in this case, that would be the second column. This new matrix is going to be called $A_{2}$ .

$A_{2}=\left[\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right]$

The value of y using Cramer's rule is:

$y=\frac{det(A_{2}) }{det(A)}$

Find the value of the determinant of each matrix, and divide:

$y==\frac{\left|\begin{array}{cccc}1&3&2&2\\-7&-3&5&-8\\4&6&1&1\\3&1&-1&1\end{array}\right|}{\left|\begin{array}{cccc}1&1&2&2\\-7&-3&5&-8\\4&1&1&1\\3&7&-1&1\end{array}\right|} =\frac{158}{-579}$

$y=-\frac{158}{579}$

7 0

3 years ago

What is 12+[(14-6)/4]

saveliy_v [14]

Answer:

Step-by-step explanation:

THE ANSWER TO THE PROBLEM IS 14

3 0

3 years ago