A square since all sides are equal and the angles aren't acute so it can't be a rhombus
Answer:

Step-by-step explanation:
Let
y ----> the distance in miles
x ----> the time in hours
using proportion

Simplify


This is a linear direct variation
The unit rate or speed is the slope of the linear equation
The unit rate is 4 miles/hour
9x–42=5 is x = 11.
<u>Step-by-step explanation:</u>
9x- 42 = 5...
When we put x = 9
then we will get 81 - 42 =39
put x = 10 then
9(10) - 42 = 90 - 42 - 48
put x = 11
then 9(11) - 42 = 99-42 = 57
So x = 11 is the answer.
Answer:
D
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 given angles from 180
x = 180° - (90 + 35)° = 180° - 125° = 55°
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Since the triangle is right use the cosine ratio to solve for b
cos35° =
= 
Multiply both sides by 20
20 × cos35° = b, hence
b = 16.38 ( to 2 dec. places )
Using the quadratic formula, the answers could be A B and D