Answer:
The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!
Step-by-step explanation:
Answer:
8 square units
Step-by-step explanation:
Draw vertical and horizontal lines, dividing the triangle into 9 equally sized smaller triangles. 4 of the smaller triangles are shaded, so the area of the square is 4/9 the area of the triangle.
A = 4/9 (½ (6)(6))
A = 8
Answer:
height of water in the container is 3 cm.
Step-by-step explanation:
Given;
A sealed rectangular container, measuring 4 cm by 8 cm by 16 cm
the height of the container is 16 cm, when filled with water at 4 cm level from the top, thus, the height of water in the container is (16 cm - 4cm) = 12cm
Volume of water in the container when it is sitting on its smallest face = 4 cm x 8 cm x 12 cm = 384 cm³
Volume of water in the container when it is sitting on its largest face = 8 cm x 16 cm x h
where;
h is height of water in the container
384 = 8 x 16 x h
384 = 128h
h = 384 / 128
h = 3 cm
Therefore, height of water in the container is 3 cm.
E is the correct answer! hope this helped :)