Answer: the correct answer is D. It says less than or equal to and that means it’s shaded below the line and a full line. Alex said it was correct
Step-by-step explanation:
equilateral triangles
parallelograms
rectangles
Answer: parallelograms.
Step-by-step explanation:
The lesson states that the lateral faces of a prism are parallelograms.
Answer:
(x − 4)² + (y − 3)² = 25
Step-by-step explanation:
The equation of a circle is:
(x − h)² + (y − k)² = r²
Given three points on the circle, we can write three equations:
(1 − h)² + (7 − k)² = r²
(8 − h)² + (6 − k)² = r²
(7 − h)² + (-1 − k)² = r²
Expanding:
1 − 2h + h² + 49 − 14k + k² = r²
64 − 16h + h² + 36 − 12k + k² = r²
49 − 14h + h² + 1 + 2k + k² = r²
Simplifying:
50 − 2h + h² − 14k + k² = r²
100 − 16h + h² − 12k + k² = r²
50 − 14h + h² + 2k + k² = r²
Subtracting the first equation from the second and third equations:
50 − 14h + 2k = 0
-12h + 16k = 0
Solving the system of equations, first reduce:
25 − 7h + k = 0
-3h + 4k = 0
Solve with substitution or elimination. Using substitution, solve for k in the first equation and substitute into the second.
k = 7h − 25
-3h + 4(7h − 25) = 0
-3h + 28h − 100 = 0
25h = 100
h = 4
k = 7h −25
k = 7(4) − 25
k = 3
Now plug these into any of the original three equations to find r.
(1 − h)² + (7 − k)² = r²
(1 − 4)² + (7 − 3)² = r²
9 + 16 = r²
25 = r²
The equation of the circle is:
(x − 4)² + (y − 3)² = 25
Graph: desmos.com/calculator/ctoljeqhnp
Around 40.38 - 40 goldfish is your answer.
Answer:
Width=25 ft and length=30 ft
Step-by-step explanation:
In order to find the answer let's remember that the area (A) of a rectangle is:
Let's assume that the length of the room is 'X' feet.
Becuase the problem mentioned that the width (Y) of the room is 5 feet less than the length, then:
Now, using the area equation we have:
A=width*length
but using the width expression we have:
Using the root's equation we have:
Because the length (X) can't be negative, then length=30 feet. In order to find the width we have:
So the width is 25 feet.
In conclusion the room has a width=25 ft and length=30 ft.
Answer:
it is non proportional
Step-by-step explanation: