All categories

3 years ago

Help me on all these questions (picture added)

Mathematics

1 answer:

Alchen [17]3 years ago

8 0

7. -9
8. -10
9. -60
10. -70
11. 300
12. -145
13. -1650
14. -1000

You might be interested in

dan and miquel are working on the same homework assignment.dan finished 1/4 of the assignment.miquel has finished 3/4 of the ass

stira [4]

Miguel has finished the homework assignment first.

6 0

3 years ago

Read 2 more answers

A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair a

vesna_86 [32]

$Chair=x$

$Table=y$

$Desk=z$

$\begin{Bmatrix}x+y&=&40\\y+z&=&83\\x+z&=&77\end{matrix}$

keep the first row as normal, then in the other ones, we can isolate Y and X

$\begin{Bmatrix}x+y&=&40\\y&=&83-z\\x&=&77-z\end{matrix}$

now we can replace at first row...

$\begin{Bmatrix}(77-z)+(83-z)&=&40\\y&=&83-z\\x&=&77-z\end{matrix}$

$\begin{Bmatrix}160-2z&=&40\\y&=&83-z\\x&=&77-z\end{matrix}$

$\begin{Bmatrix}-2z&=&40-160\\y&=&83-z\\x&=&77-z\end{matrix}$

$\begin{Bmatrix}-2z&=&-120\\y&=&83-z\\x&=&77-z\end{matrix}$

$\begin{Bmatrix}z&=&60\\y&=&83-z\\x&=&77-z\end{matrix}$

now we can replace the Z to discovery the other value

$\begin{Bmatrix}z&=&60\\y&=&83-60\\x&=&77-60\end{matrix}$

$\boxed{\boxed{\boxed{\begin{Bmatrix}Chair&=&17\\Table&=&23\\Desk&=&60\end{matrix}}}}$

6 0

3 years ago

Which of the following rational functions is graphed below?

Westkost [7]

The correct answer would be C

5 0

2 years ago

Using the graph below, calculate the average rate of change for f(x) from x = 2 to x = 6.

Zigmanuir [339]

The graph passes through the points (2,2) and (6,6)
This means
f(2) = 2
f(6) = 6

The average rate of change of f(x) x = 2 to x = 6 will be:

$\frac{f(6)-f(2)}{6-2} = \frac{6-2}{4}= \frac{4}{4}=1$

Thus the average rate of change of given function from x = 2 to x = 6 is 1

3 0

3 years ago

Read 2 more answers

PLEASE HELP!!!!! all you have to do is tasks 2 and 3. I already filled out the info in task 1

Lera25 [3.4K]

Answer:

that i sto much at one time someone get this guy a cauculater :-)

Step-by-step explanation:

5 0

3 years ago