Answer:
Measure of the acute angle = 84°
Step-by-step explanation:
In the figure attached,
ABDE is a swimming pool having length 'AB' = 65 feet
Depth of one end of the pool is BE = 4 feet
And depth of the other end AD = 11 feet
Acute angle between the bottom of the pool (DE) and wall of the deep end (AD) is ∠ADE.
Now from ΔCDE,
tanx = 
tanx = 
x = 
x = 6.15°
Now measure of acute angle the bottom of the pool makes with wall at he deep end,
m∠ADE = (90 - 6.15)°
= 83.85°
≈ 84°
For these kinds of expressions use FOIL (first, outside, inside, last).
-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2
Now combine them all:
-18x^2 + 78xy - 24y^2
2n = 8 1/2
N = 4 1/4 (4.25)
Answer:
y=13/11+17x/11 (these are fractions)
Step-by-step explanation:
Move all terms that don't contain
y
to the right side and solve.
Answer:

Step-by-step explanation:
Assume this is function is a straight line, consider the equation of the straight line: 
To find the gradient of the equation, we use any two coordinates from the table. 

We substitute the value of m in the equation:

To find c, we use the leftover coordinates, (4,0) in the equation above:

Substitute this value of c in the equation to get the function:
