Answer:
-9/10 =r
Step-by-step explanation:
7/10=r-(-8/5)
Subtracting a negative is like adding
7/10=r+(8/5)
Subtract 8/5 from each side
7/10 - 8/5=r+(8/5) - 8/5
7/10 - 8/5 = r
Get a common denominator
7/10 - 16/10 = r
-9/10 =r
0.1347 rounded to the nearest tenth is 0.1
The largest radius for the swimming pool is 15.1 feet
Step-by-step explanation:
Step 1:
Circumference of the circular swimming pool built by Dan = 95 feet
We need to determine the largest radius for the pool.
Step 2 :
Circle's circumference is given by 2πr
Where r represents the radius
This shows that the radius is in direct proportion to the circumference. Hence the radius corresponding to the maximum circumference will be the largest possible radius
So we have 2πr = 95
=> r =
=> r =
×
where 
=> r = 15.1 feet (rounded off to tenth of a foot)
Step 3 :
The largest radius for the swimming pool is 15.1 feet
Formula for point-slope:

Plug in the values (1):

{Choice B}
Plug in the values (2):

{Choice C}
_______________________
[For (3) and (4) we need to solve for slope]
(3)
First, solve for slope.
Formula for slope:

Plug in values:

Slope:

Second, we must plug into point-slope form.
Formula for point-slope:

Plug in the values:

{Choice C}
(4)
First, solve for slope.
Formula for slope:

Plug in values:

Slope:

Second, we must plug into point-slope form.
Formula for point-slope:

Plug in the values:

{Choice D}
Answer:
C) 
Step-by-step explanation:
Given Equations:
A) 
B) 
In order to eliminate
we need to multiply
to equation B and add it to A.
Multiplying
to B.
⇒ 
⇒ 
⇒ 
Adding it equation A.

+ 
We get 
Thus
is eliminated.
So, the expression used to eliminate
is:
