All categories

3 years ago

Heres another 100 free pts :) follow to know when the next 100 giveaway

Mathematics

2 answers:

timama [110]3 years ago

8 0

Answer:

Step-by-step explanation:

Maurinko [17]3 years ago

8 0

Answer:

Mind giving me a brainliest

Step-by-step explanation:

Thanks for the points!

You might be interested in

The equation of the line of best fit of a scatter plot is y = −7x − 2. What is the the y-intercept?

aleksklad [387]

Answer:

-2

Step-by-step explanation:

Equation of slope intercept form

y = (slope × x) + y intercept

6 0

2 years ago

What is the solution of the equation x2 + 8x = 4?

d1i1m1o1n [39]

Answer:

hope this is correct

4 0

3 years ago

What is the point-slope equation of the line with slope -12 that goes through the point (5,3)

nikklg [1K]

Answer:

the correct answer is c

Step-by-step explanation:

because we use formule when we write a equation

6 0

3 years ago

The sales tax for an item was $23.40 and it cost $390 before tax.<br> Find the sales tax rate.

tatyana61 [14]

$\huge \bf༆ Answer ༄$

Sales tax on the item is ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \$23.40$

Cost of the item is ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \$390$

sale tax rate is ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: \dfrac{ \$23.40}{ \$390} \times 100$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: 0.06 \times 100$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: 6 \%$

Therefore, the sales tax rate is 6 %

7 0

3 years ago

Let A be as above, consider Ax = b where b = (31, 2, 21, 11). Find x1 using Cramer’s rule. (You may use MATLAB/Octave to compute

Mice21 [21]

Answer:

x1= 1

Step-by-step explanation:

The Cramer's rule say that x1= $\frac{det(A1)}{det(A)}$ where A1 is the matrix A change the column 1 by the vector b.

Then A1= $\left[\begin{array}{cccc}31&6&-3&20\\2&2&-5&-7\\21&2&7&20\\11& 2&-11&-4\end{array}\right]$ .

Using Octave we have that det(A1)=-3840 and det(A)=-3840.

Then x1= $\frac{-3840}{-3840}=1$ .

6 0

3 years ago