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yan [13]
3 years ago
5

Solve the system of linear equations using matrices. x+6y=7 x + 5y=4

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

Answer:

1+6y= "7y=7"

1+5y= "6y=4"

Step-by-step explanation:

X represents "1" so you replace your "X" with "1" and solve the equation.

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1/3x+y=4 ssolve for y
sdas [7]

Answer:

y=-1/3x+4

Step-by-step explanation:

Subtract 1/3x on both sides to get y by itself, and that leaves y on one side and -1/3+4 on another.

5 0
3 years ago
Read 2 more answers
HELP!!!
ella [17]

Answer:

120

Step-by-step explanation:

We are given that the function for the number of students enrolled in a new course is f(x) = 4^{x}-1.

It is asked to find the average increase in the number of students enrolled per hour between 2 to 4 hours.

We know that the average rate of change is given by,

A = \frac{f(x)-f(a)}{x-a},

where f(x)-f(a) is the change in the function as the input value (x-a) changes.

Now, the number of students enrolled at 4 = f(4) = f(x) = 4^{4}-1 = 255 and the number of students enrolled at 2 = f(2) = f(x) = 4^{2}-1 = 15

So, the average increase A=\frac{f(4)-f(2)}{4-2} = A=\frac{255-15}{4-2} = A=\frac{240}{2} = 120.

Hence, the average increase in the number of students enrolled is 120.

3 0
3 years ago
The graph shows the total amounts in two accounts with the same principal and annual interest rate.
True [87]

Answer:

I would say About $175

Step-by-step explanation:

This is all based on the picture, the simple interest is $500 after 35 years, and the compound interest is almost at $700, so if it is not $200 yet, it has to be $175.

4 0
3 years ago
Read 2 more answers
Which statement best explains the relationship between lines FG and HJ?
murzikaleks [220]

Answer:

(D)

Step-by-step explanation:

From the figure, we have

The coordinates of the point F are: (-4,1).

The coordinates of the point G are: (0,-2)

The coordinates of the point J are: (0,4) and

The coordinates of the point H are: (-4,-2).

Now, the slope of the line FG is :

S=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

S=\frac{-2-1}{0+4}

S=\frac{-3}{4}

And, the slope of the line HJ is:

S=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}

S=\frac{-2-4}{-4-0}

S=\frac{3}{2}

Now, the slope of FG=\frac{1}{slope of HJ}

\frac{-3}{4}=\frac{2}{3}

which is not possible, thus They are not perpendicular because their slopes are not negative reciprocals.

6 0
3 years ago
Read 2 more answers
2.7 (7.8)??? I don't know how to work this problem...
ruslelena [56]
Just multiply the two, your answer should be 21.06
8 0
3 years ago
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