A) miss brown is reading two books every three weeks she has read 12 books so far how many weeks has she been reading so far ? b) if miss brown wants to finish reading 12 books in 15 weeks what would you tell her to change?

(A) Miss Brown has been reading for 18 weeks so far.

(B) So as to complete the given target, she needs to SLOW her reading rate by 0.25 books per week.

Step-by-step explanation:

The number of weeks it takes to read 2 books by  Miss Brown  = 3 weeks

So, the time taken to read 1 book = 3 /2  = 1/5  week

Number of books read so far = 12

Let us assume it takes m weeks to read 12 books.

Now, Time taken to read 12 books  = 12 x ( Time taken to read 1 book)

⇒ m= 12 x ( 1.5 week)  = 18  weeks

or, m= 18 weeks

Hence, Miss Brown has  been reading for 18 weeks so far.

Also, Miss Brown wants to  finish 12 books in 15 weeks.

So, the number of books finished each week =

=

So, number of books Miss Brown should finish  each week  is 1.25

But here current  reading rate is 1.5 books per week .

So as to complete the given target, she needs to SLOW her reading rate by 0.25  books per week.

a.   we have two

lines:   y = 4-x   and  

y = 8-x^-1

given two simultaneous equations that are both to be

true, then the solution is the points where the lines cross. the intersection is

where the two equations are equal. therefore the solution that works for both

equations is when

4-x = 8-x^-1

this is where the two lines will cross and that is the

common point that satisfies both equations.

b.   4-x = 8-x^-1

  x           4-x       8-x^-1

-3           7        

8.33

-2           6         8.5

-1           5         9

  0           4        

-

  1           3        

7

  2           2        

7.5

  3           1         7.67

the table shows that none of the x values from -3 to 3 is

the solution because in no case does

4-x = 8-x^-1

to find the solution we need to rearrange the equation to

find for x:

4-x = 8-x^-1

multiply both sides with x:

4x-x^2 = 8x-1

x^2+4x-1=0

x= -4.236, 0.236

therefore there are two points that satisfies the

equation.

find y:  

x=-4.236

y = 4-x   = 4 – (-4.236)

= 8.236

y = 8-x^-1 =   .236)^-1

= 8.236

x=0.236

  y = 4-x   = 4 – (0.236) = 3.764

y = 8-x^-1 =   8-(0.236)^-1

= 3.764

thus the two lines cross at 2 points:

(-4.236, 8.236) & (0.236, 3.764)

c.   to solve

graphically the equation 4-x = 8-x^-1

we would graph both lines: y = 4-x   and   y

= 8-x^-1

the point on the graph where the lines cross is the

solution to the system of equations.

just graph the points on part b on a cartesian coordinate

system and extend the two lines.   the

solution is, as stated, the point where the two lines cross on the graph.

step-by-step explanation:

mark brainliest!

for this case we have that by definition, the volume of a cylinder is given by:

where:

r: it's the radio

h: it's the height

we have as data that:

substituting:

so, the cylinder volume is

option d