Answer:
Step-by-step explanation:
Answer:
The ratio of the area in the drawing to the actual area is 1 square centimeter:4 square feet.
Step-by-step explanation:
Find the number of feet represented by 1 centimeter in the scale drawing.
1 cm
2 ft
1 centimeter in the drawing equals 2 feet on the actual floor.
Step 2:
Find the side length of the floor in the scale drawing.
The area of the square in the drawing is 64 square centimeters, so the side length must be 8 cm.
Step 3:
Find the side length of the actual floor represented by 8 cm in the scale model.
1 cm × 8
2 ft × 8
=
8 cm
16 ft
The side length of the actual floor is 16 ft.
Step 4:
Since the area of a square is the side length squared, the area of the actual floor is 256 square feet.
Step 5:
The ratio of the area in the drawing to the actual area is 64 square centimeters:256 square feet.
Simplify the ratio.
The ratio of the area in the drawing to the actual area is 1 square centimeter:4 square feet.
He believed the surface area, in square units, could be found by simplifying the expression
(Picture 2)
What error did Devon make?
A. He used 26 instead of 24 as the slant height of one set of lateral faces.
B. He omitted the rectangle where the upper and lower solids join together.
C. He included the 34 by 20 base of the figure.
D. He believed the upper part of the figure was a pyramid instead of a prism.
Answer:
D
Step-by-step explanation:
Answer:19
Step-by-step explanation:you get 19
Answer:19
Step-by-step explanation:
Answer:
12x² - 2x - 30
Step-by-step explanation:
When multiplying binomials, remember to follow the FOIL method:
FOIL =
First
Outside
Inside
Last
Follow FOIL: (3x - 5)(4x + 6)
(3x)(4x) = 12x²
(3x)(6) = 18x
(-5)(4x) = -20x
(-5)(6) = -30
Combine like terms, simplify:
12x² + 18x - 20x - 30
12x² + (18x - 20x) - 30
12x² - 2x - 30
12x² - 2x - 30 is your answer.
~
Answer:
12x²-2x-30=2(6x²-x-15)
Step-by-step explanation:
(3x-5)(4x+6)=12x²-20x+18x-30=
12x²-2x-30=2(6x²-x-15)
Kensington Middle School
neither; the ratios are equivalent